ML12073A364

Enclosure 1, Analysis of Fish Species Occurrences in Chickamauga Reservoir - a Comparison of Historical and Recent Data

ML12073A364
Person / Time
Site:	Watts Bar
Issue date:	10/31/2010
From:	Simmons J Tennessee Valley Authority
To:	Document Control Desk, Office of Nuclear Reactor Regulation
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Download: ML12073A364 (67)

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Enclosure I Analysis of Fish Species Occurrences in Chickamauga Reservoir - A Comparison of Historical and Recent Data

Analysis of Fish Species Occurrences in Chickamauga Reservoir-A Comparison of Historical and Recent Data Jeffrey W. Simmons Tennessee Valley Authority Biological and Water Resources Chattanooga, Tennessee October 2010

Table of Contents Introduction.....................................................................................................................................

1 M ethods..........................................................................................................................................

2 D ata Com pilation........................................................................................................................

2 Sam pling Localities...........................................................................................................

2 General D escription of Chickam auga Reservoir...............................................................

2 Cove Rotenone Locations...................................................................................................

2 Gill Net, Trap Net, Hoop Net, and Boat Electrofishing Locations.....................................

3 Free-flow ing Tributary Sam ple Locations.........................................................................

4 Brief Synopsis of Sam pling M ethods.....................................................................................

4 Cove Rotenone........................................................................................................................

4 Gill N etting.............................................................................................................................

5 Hoop and Trap N etting........................................................................................................

6 Boat Electrofishing.............................................................................................................

7 Im pingem ent Sam pling......................................................................................................

7 Free-flow ing Tributaries......................................................................................................

7 Results and D iscussion...........................................................................................................

8 Com parison of Species Records by Sam pling M ethod...........................................................

8 Rotenone versus Electrofishing, Gill nets, Hoop Nets, Trap Nets......................................

9 Im pingem ent sam ples........................................................................................................

12 Tem poral Changes in Fish Species Occurrences.............................................................

13 Species not collected since the 1970's..............................................................................

13 Species not collected since the 1980's..............................................................................

14 Species not collected since the 1990's..............................................................................

15 Sum m ary and Conclusions........................................................................................................

19 Literature Cited.............................................................................................................................

22 Appendix 1....................................................................................................................................

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List of Figures Figure 1. Chickamauga Reservoir, including the Hiwassee River embayment. Red dots indicate the approximate locations of current RFAI fish sampling stations on Chickamauga Reservoir. Green dots indicate Tennessee (TRM) or Hiwassee River Miles (HiRM) for reference and are labeled approximately every 10 river miles..............................

25 Figure 2. TVA tributary stream and river sampling locations within the Chickamauga Reservoir watershed. Red dots indicate sampling stations on direct tributaries to the Tennessee River (Chickamauga Reservoir). Green dots denote sampling stations on the Tennessee portion of the Hiwassee River and its tributaries..................................................................................

26 List of Tables Table 1. TVA cove rotenone locations and sample years in Chickamauga Reservoir............................. 27 Table 2. A comparison of overall species occurrences from current and historical TVA Chickamauga Reservoir fish collection data from electrofishing (EF), gill netting (GN), hoop netting (HN),

trap netting (TN) and cove rotenone surveys, as well as data from fish impingement (impgmt) studies conducted at Sequoyah Nuclear Plant (SQN), Watts Bar Nuclear Plant (WBN), Watts Bar Supplemental Condenser Cooling Water (SCCW), and Watts Bar Steam Plant (WBSP).

Records contained in parenthesis were only collected by HN or TN during the specified sampling period/locations. Species are listed alphabetically by common name. Asterisks denote questionable species records......................................................................................

28 Table 3. Fish species collected during TVA stream sampling in direct tributaries to the Tennessee River within Chickamauga Reservoir, 1995-2009. No sampling was conducted during 2010. Species are listed alphabetically by common name...........................................................................

31 Table 4. Fish species collected during TVA stream and river sampling in the Tennessee portion of the Hiwassee River and its tributaries, 1991-2010. Species are listed alphabetically by common n am e...........................................................................................................................................

3 3 Appendix Appendix 1. Fish species collected, by year, from 1947 to 1999 in TVA cove rotenone surveys, Chickamauga Reservoir. Tennessee River Mile (TRM) and Hiwassee River Mile (HiRM) ranges are reservoir segments where sampling occurred in various coves throughout that particular river reach. Fish species are listed in alphabetical order by common name.

• 1999 Cove rotenone records are from Baxter and Gardner (2000). Exact cove locations for 1999 species records were not specified and are listed in the TRM 471.7-478 column.

1999 samples were collected in coves near TRM 476.2, 478, 495.1, 508, and 524.6.

• • Denotes questionable species records........................................................................

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Introduction The Tennessee Valley Authority (TVA) has conducted an extensive amount of fish sampling in Chickamauga Reservoir spanning from 1947 to 2009. Cove rotenone sampling (consists of blocking off a cove on a reservoir and killing fish with a chemical {rotenone} to assess species occurrence and abundance) was conducted from 1947 to 1999 in Chickamauga Reservoir. Gill nets (1971 to 1994), hoop nets (1977 to 1985), trap nets (1971 to 1978), and boat electrofishing (1977 to 1985; 1991) were used during special studies conducted by TVA in Chickamauga Reservoir. Routine reservoir fisheries monitoring was initiated in 1993 using boat electrofishing and gill nets at various stations throughout Chickamauga Reservoir and has continued to present.

Additional data on fish species occurrences in Chickamauga Reservoir were obtained during fish impingement mortality sampling (number of fish impinged on trash screens at power plant cooling water intakes), which was conducted during 1981 to 1985, 2001 to 2002, and 2005 to 2007 at Sequoyah Nuclear Plant; during 1974 to 1975 at Watts Bar Steam Plant, which was taken out of operation in 1982; during 1999 to 2000, and 2005 to 2007 at the Watts Bar Nuclear Plant Supplemental Condenser Cooling Water intake (the old Watts Bar Steam Plant intake at Watts Bar Dam) and during 1996 to 1997 at Watts Bar Nuclear Plant.

In addition to reservoir fish sampling, TVA conducted sampling in Chickamauga Reservoir tributary streams and rivers during 1991 to present to assess changes in water quality at a watershed level. Fish collected during these surveys provide additional information on species occurrences within the Chickamauga Reservoir watershed.

This purpose of this report is: (1) to assess differences among gear types in detecting certain fish species in Chickamauga Reservoir from 1947 to 2009 and (2) to examine temporal changes in fish species occurrences during this time period.

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Methods Data Compilation Data included in this report were compiled from historical reports, raw data files, and TVA reservoir and stream fish databases, which represent all currently known fish species occurrence data from TVA fish collections in Chickamauga Reservoir. Table 2 compiles all species occurrence data from the historical sources. Currently accepted common and scientific names of fishes, as listed by Nelson et al. 2004, were used in this document. Only common names are used within the text of this document, while both common and scientific names are provided in tables and in the appendix.

Sampling Localities General Description of Chickamauga Reservoir The construction of Chickamauga Reservoir was completed in 1940. Chickamauga Dam is located at Tennessee River mile (TRM) 471 and impounds 59 miles of the Tennessee River upstream to Watts Bar Dam which is located at TRM 530 (Figure 1). Mainstem Tennessee River reservoirs, such as Chickamauga Reservoir, are typically characterized by 3 distinct zones: the inflow, transition, and forebay. The inflow zone is in the upper reaches of the reservoir and is riverine in nature; the transition zone or mid-reservoir is the area where water velocity decreases due to increased cross-sectional area; and the forebay is the lacustrine area near the dam.

Chickamauga Reservoir also contains a large embayment created by the Hiwassee River inflow.

Cove Rotenone Locations TVA began fish sampling with rotenone in Chickamauga Reservoir in 1947 to determine density of game, forage, and commercially valuable fish species. These data also provided species occurrence information and characterized the general fish community occurring in Chickamauga Reservoir. Samples were taken at various locations annually through 1959 (except during 1948 and 1953). No samples were collected from 1960 through 1969, but annual sampling resumed in 1970 and continued until 1993. Rotenone sampling continued during 1995 until 1999 on a biennial basis. Twenty-two locations were sampled with rotenone throughout Chickamauga 2

Reservoir; of these, five were sampled for a duration of > 17 years (Table 1). Sampling locations were present within all zones of the reservoir.

Gill Net, Trap Net, Hoop Net, and Boat Electrofishing Locations Experimental gill nets, hoop nets, and boat electrofishing were used during Watts Bar Nuclear pre-operational monitoring during 1977 to 1979 and 1982 to 1985 (TVA 1980; TVA 1986a).

Experimental gill and hoop nets were set at various locations from TRM 524.2 to TRM 524.9 and from TRM 527.4 to TRM 528.4. Boat electrofishing was conducted throughout the same general sample reaches.

Standard gill nets and trap nets were set at TRM's 473, 483.6, and 495, as well as in the Hiwassee River embayment at Hiwassee River mile (HiRM) 1.0 (standard gill nets only), during Sequoyah Nuclear Plant pre-operational monitoring from 1971 to 1978 (TVA 1978). Initial Sequoyah Nuclear Plant operational monitoring was conducted using standard gill nets from 1980 to 1986 at TRM's 473,483, and 495 (TVA 1982; TVA 1985; TVA 1986b). Experimental gill nets were used during 1986 at areas within TRM 482.7 to TRM 487.6 (TVA 1987).

A special study to evaluate population dynamics of sauger in Chickamauga Reservoir was conducted during 1986 to 1994, using both standard and experimental gill nets. In addition to sauger, data were collected on all other species captured in gill nets. Sampling was conducted in the upper 14.9 miles of Chickamauga Reservoir (TRM 515 to TRM 529.9) during 1986 and 1988 (Hevel 1987; Hickman et al. 1989). During 1989 to 1991 and 1993 to 1994, sampling was conducted at TRM's 521 and 529 (Hickman et al. 1990; Hevel and Hickman 1991; Hickman and Buchanan 1995).

During 1991, a special study was conducted to evaluate the condition of fish communities in Chickamauga Reservoir embayments (Hevel and Hickman 1992). Experimental gill nets were set in nine embayments located from TRM 477 upstream to TRM 514 and in six embayments in the Hiwassee River arm of the reservoir which were located from HiRM 7 upstream to HiRM 16.

Boat electrofishing was also conducted in each embayment.

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Beginning in 1993 and continued to present, annual reservoir fish monitoring was implemented in Chickamauga Reservoir utilizing Reservoir Fish Assemblage Index (RFAI) methodology to evaluate changes in the ecological health of fish communities (Simmons 2010a). RFAI has been thoroughly tested on TVA and other reservoirs and published in peer-reviewed literature (Jennings et al. 1995; Hickman and McDonough 1996; McDonough and Hickman 1999).

Monitoring stations were established in the inflow, transition, and forebay zones of the reservoir, as well as in the Hiwassee River embayment. The Chickamauga Reservoir inflow sample site is located at Tennessee River mile (TRM) 529.0 below Watts Bar Dam, the transition zone sampling station is located at TRM 490.5, two sites in the forebay are located at TRM 482 and TRM 472.3, and a site on the Hiwassee River embayment of Chickamauga Reservoir is located at HiRM 8.5 (Figure 1). Boat electrofishing and experimental gill nets are the sampling gear used at each of the sampling localities with the exception of the inflow site, where only boat electrofishing is conducted.

Free-flowing Tributary Sample Locations Of the numerous tributaries flowing into Chickamauga Reservoir, the Hiwassee River is undoubtedly the largest. For the purpose of this report, data collected in the Hiwassee River system are presented separately from those from smaller direct tributaries to Chickamauga Reservoir; faunal differences and sampling protocols differ between the two (large drainage area versus smaller drainage area). During the early 1990's, TVA began sampling free-flowing streams and rivers throughout the Tennessee River system to assess water quality conditions at a watershed level. TVA adapted Index of Biotic Integrity (IBI) methodology (Karr et al. 1986) to the Tennessee River system, which uses fish assemblage composition, abundance, and condition as an indicator of water quality. Within the Hiwassee River system in Tennessee, 56 locations were sampled from 1991 to 2010 and 37 locations were sampled in smaller direct tributaries to Chickamauga Reservoir during 1995 to 2009 (Figure 2).

Brief Synopsis of Sampling Methods Cove Rotenone Rotenone samples were conducted by isolating fish populations of a cove from the main body of the reservoir by stretching a block net across the cove and anchoring the bottom of the net to preclude immigration/emigration of fish in the sample area. Toxicant (rotenone) was applied 4

throughout the water column at a concentration of 1 mg/i and fish were collected as they floated to the surface. Potassium permanganate was applied at 1 mg/i outside the sample area to buffer the rotenone and prevent any unnecessary fish mortality. Fish collection was conducted for at least a two-day minimum after application of rotenone to pick up fish that may have floated to the surface overnight. Fish were identified to species, measured, weighed, and recorded.

Gill Netting Gill nets are typically constructed of monofilament mesh netting and trap fish that swim into the net. Gill nets are used as an additional gear type to collect fish from deeper habitats not effectively sampled by electrofishing. Gill nets are less effective than hoop nets or electrofishing for capture of some species due to body shapes, limited movement exhibited by some species (hence less probability of encountering the net), or the affinity for cover, where gill nets cannot be effectively fished due to snagging problems. Gill nets are usually set perpendicular to the shoreline or channel. Each net is weighted with a lead line to keep the bottom of the net on the river bottom and contains a float line on the top portion of the net to keep the net standing vertical. An anchor is secured to each end of the lead line to keep the net in place and a float is secured to each end of the float line so that the nets can be retrieved. When gill nets are set in non-flowing waters, few problems are encountered other than occasional underwater obstructions that may snag a net. When nets are set in flowing waters, they are much more likely to become snagged as the current moves them along the bottom, unless sufficient weight is used to prevent any movement. They are also particularly susceptible to becoming fouled with debris, such as leaves and senescent aquatic vegetation, particularly in fall and winter months.

Both standard and experimental gill nets have been used by TVA while sampling in Chickamauga Reservoir. Standard gill nets were 30.5 m (100 ft) long by 2.4 m (8 ft) tall and contained 3.8 cm mesh (1.5 in) (TVA 1978; TVA 1982; TVA 1984; TVA 1985; Hevel 1987; Hickman et al. 1989; Hickman et al. 1990; Hickman and Buchanan 1995). Experimental gill nets employ several panels (sections) of various mesh sizes in succession rather than one mesh size throughout the length of the net. This allows for a more complete collection of various size classes of most species, as well as smaller species that may not be taken with larger mesh nets.

Experimental gill nets used during Watts Bar Nuclear Plant pre-operational and initial operation monitoring were 38.1 m (125 ft) long by 2.4 m (8 ft) tall and contained five panels with mesh 5

ranging from 1.27 cm (0.5 in) to 6.55 cm (2.5 in) (TVA 1980; TVA 1986a). A special study to evaluate freshwater drum population in Chickamauga Reservoir used experimental gill nets which were 68.6 m (225 ft) long by 2.4 m (8 ft) tall and contained mesh panels ranging from 2.5 cm (1 in) to 12.7 cm (5 in) (TVA 1987). During special studies evaluating Chickamauga Reservoir sauger populations and embayments, experimental gill nets used were 30.5 m (100 ft) long by 2.4 m (8 ft) tall and contained five panels with mesh ranging from 2.5 cm (1 in) to 7.6 cm (3 in) (Hevel 1987; Hickman et al. 1989; Hickman et al. 1990; Hevel and Hickman 1991; Hevel and Hickman 1992; Hickman and Buchanan 1995). Routine reservoir sampling conducted from 1993 to present is conducted with experimental gill nets, 30.5 m (100 ft) long by 2.4 m (8 ft) tall, containing five panels with mesh ranging from 2.5 cm (1 in) to 12.7 cm (5 in) (Simmons 201 Oa). Of the five current Chickamauga Reservoir sampling stations, gill nets are used at all stations except the inflow station (TRM 529). All current reservoir stations are sampled during autumn to examine the condition of the fish community at the end of the "biological year" to evaluate how the fish community has responded to stressors (natural and anthropogenic) throughout the year. As mentioned above, gill nets set in flowing water during the fall are routinely ineffective due to clogging from organic matter. Additionally, higher water velocities reduce the integrity of the net set.

Hoop and Trap Netting Hoop nets allow fish to enter a netted enclosure through a series of one or more funnels attached to a series of hoops. Hoop nets can be used in free-flowing rivers or in reservoir inflows where current velocities are greater. Trap nets contain a leader and two wings that lead to the net opening. The leader runs down the center to the mouth of the net and the wings are anchored at 45-degree angles to each side of the net and connect at the mouth. When fish moving along the shore encounter the net, they follow the net leader into the netted enclosure where escape is difficult. Trap nets are most applicable to transition and forebay reservoir conditions due to lack of rigidity which makes them ineffective in flowing water.

Hoop nets used during Watts Bar Nuclear Plant pre-operational monitoring contained seven hoops, two funnels, and were 7.6 m (25 ft) long (TVA 1980; TVA 1986a). Trap nets used during Sequoyah Nuclear Plant pre-operation sampling were placed along shorelines and were 3 m (9.8 ft) long (TVA 1978).

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Boat Electrofishing Electrofishing basically involves using a power source (generator) and wire leads (electrodes) to send direct electric current (dc) into the water. A control box (transformer that converts alternating current {ac} to dc) allows the operator to adjust current output based on water conductivity for maximum shocking efficiency. When the number of volts and amperes are correctly matched to the conductivity of the water, fish are temporarily stunned and collected with dip nets. Duration and length of electrofishing runs varied during historical sampling.

Current boat electrofishing sampling (1993 to present) consists of 15 boat electrofishing runs near the shoreline, each 300 m long, with a duration of approximately 10 minutes each. The total near-shore area sampled is approximately 4,500 m (15,000 ft).

Impingement Sampling Power plant cooling water intakes result in impingement of fish and debris on trash screens during operation. Numerous studies were conducted at Watts Bar Nuclear Plant, Watts Bar Steam Plant, Watts Bar Nuclear Plant Supplemental Condenser Cooling Water intake, and Sequoyah Nuclear Plant to estimate the species composition and number of adult fish that were impinged during plant operations. Traveling screens were backwashed and fish were collected as the water passed through a steel mesh basket at the end of the screen wash sluice pipe.

Impinged fish were identified to species, measured, weighed, and recorded.

Free-flowing Tributaries TVA IBI methodology is designed to deplete habitat sections in an effort to document every species present at a site. Backpack-mounted electrofishers are used to shock fish in run and riffle habitats into a 20-ft seine. Pool habitats are sampled by seine hauls. Shorelines sections (e.g.

undercut banks, root wads, woody debris piles) are shocked and fish are netted as encountered.

Every time a new species is encountered, three additional efforts in a particular habitat must be conducted until no new species are encountered. Streams or rivers with a drainage area of> 100 square miles are also sampled with a small boat electrofishing unit to capture larger pool species.

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Results and Discussion Comparison of Species Records by Sampling Method TVA fish sampling from 1947 to 2009, has resulted in collection of 88 fish species. Of these, five are questionable records (Table 2). Cove rotenone surveys have resulted in collection of 73 species, three of which are questionable records, while boat electrofishing, gill net, hoop net, and trap net sampling from 1971 to 2009 have also resulted in collection of 73 species, two of which are questionable records (Table 2). Impingement samples from Sequoyah Nuclear Plant, Watts Bar Steam Plant, Watts Bar Nuclear Plant, and Watts Bar Nuclear Plant Supplemental Condenser Cooling Water intake have resulted in collection of 50 species, one of which is a questionable record (Table 2).

Shortnose gar, mud darter, orangethroat darter, pumpkinseed, and sawfin shiner were recorded in TVA Chickamauga Reservoir samples, but were most likely misidentified and therefore are questionable species records. Shortnose gar was recorded in electrofishing, gill net, and rotenone surveys; these records were probably a misidentification of spotted gar. The currently understood distribution of shortnose gar in the Tennessee River system is restricted to the larger downstream reaches (Etnier and Starnes, 1993), which is concurrent with TVA RFAI data (Kentucky Reservoir). Some of the more upstream records in the Tennessee River system may be based on poorly marked spotted gars (D.A. Etnier, University of Tennessee, Knoxville, personal communication, 2010).

Mud darter and orangethroat darter cove rotenone records are almost certainly erroneous. In Tennessee, mud darters are distributed in direct tributaries to the Mississippi River and in tributaries to the lower Tennessee (Kentucky Reservoir) and Cumberland Rivers (Barkley Reservoir) (Etnier and Starnes 1993). Orangethroat darters are distributed in the Cumberland River system and in the lower Tennessee River system upstream to Pickwick Reservoir within Tennessee (Etnier and Starnes 1993). Both of these species can be, and probably were, confused with the rainbow darter.

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Two records for pumpkinseed, one individual collected in a gill net and one individual collected in a trap net during the 1970's, are most likely invalid (TVA 1978). This species is not native to Tennessee; the only valid records are from introduced populations in east Tennessee Reservoirs (South Holston and Boone Reservoirs) (Etnier and Starnes 1993; Wallus 2008). An early record of pumpkinseed from Reelfoot Lake in western Tennessee was actually a hybrid combination of other Lepomis species (Etnier and Starnes 1993). Sunfish commonly hybridize which increases the probability of misidentification. Some non-native species, once introduced into a river system, are able to quickly disperse through a system. Pumpkinseeds have not demonstrated this dispersal capability where they have been introduced (Wallus 2008).

Most likely, sawfin shiners collected during 1980-1981 Sequoyah Nuclear Plant impingement samples were misidentified as mimic shiners. Mimic shiners have been able to adapt to reservoir conditions, while sawfin shiners are typically only found in free-flowing streams and rivers (Etnier and Starnes 1993). Additionally, no records of sawfin shiners exist from Chickamauga Reservoir or tributaries (Etnier and Starnes 1993).

Rotenone versus Electrofishing, Gill nets, Hoop Nets, Trap Nets Although the same number of species has been collected in rotenone samples compared with electrofishing, gill net, hoop net, and trap net samples, there are differences in species composition relative to sampling method. In rotenone samples, 11 species, two of which are questionable records, were collected which were not encountered during Chickamauga Reservoir sampling with the other four sampling methods (blackspotted topminnow, blackstripe topminnow, fathead minnow, ghost shiner, mimic shiner, pugnose minnow, rainbow darter, stripetail darter, whitetail shiner; and questionable records, mud darter, orangethroat darter). In electrofishing, gill net, hoop net, and trap net samples, 9 species, one of which is a questionable record, were collected which were not encountered during rotenone surveys (alewife, American eel, Atlantic needlefish, brown trout, dusky darter, grass carp, inland silverside, lake sturgeon, rainbow trout; and a questionable record, pumpkinseed). No species were collected using hoop nets and trap nets that were not collected using electrofishing or gill nets.

Of the nine valid species collected in rotenone surveys that were not encountered using the other sampling gear (blackspotted topminnow, blackstripe topminnow, fathead minnow, ghost shiner, 9

mimic shiner, pugnose minnow, rainbow darter, stripetail darter, whitetail shiner), five are not typically found in reservoirs or occur in shallow backwater areas of reservoirs that are sampled during cove rotenone surveys but are not sampled during TVA electrofishing surveys (blackspotted topminnow, blackstripe topminnow, rainbow darter, stripetail darter, whitetail shiner). These species are too small to be collected using the other gear types (gill nets, hoop nets, trap nets). Because rotenone samples were conducted in coves in proximity to occasional stream inflows, stream fishes such as blackspotted topminnows, whitetail shiners, stripetail darters, and rainbow darters were encountered. Blackstripe topminnows are more ubiquitous in their habitat use than blackspotted topminnows; they can commonly occur in reservoirs, rivers, and streams in slackwater habitats (Etnier and Starnes 1993). Fathead minnows were collected only during a 1979 rotenone sample. This species is one of the most commercially available bait fishes used by anglers. Because they have been so widely used for bait, it is unknown if this species is even native to the Tennessee River system. There are very few reproducing populations within the state which suggests that fathead minnows may not be indigenous to this region (Etnier and Starnes 1993). Ghost shiners were collected periodically in rotenone surveys from 1974 to 1999 in Chickamauga Reservoir. A majority of these records were from coves located between TRM's 471.7 and 478, which is the forebay area of the reservoir. Ghost shiners occur in the mid-water of large streams and reservoirs, making them difficult to collect.

Electrofishing runs are conducted along shorelines which would greatly reduce the probability of collecting this minnow. Pugnose minnows were collected periodically from 1975 to 1990 in rotenone samples. Chickamauga Reservoir is near the upper end of the distribution of the pugnose minnow in the Tennessee River System where it does not appear to be as common as in the lower Tennessee River system (Etnier and Starnes 1993; Boschung and Mayden 2004).

Mimic shiners were collected in rotenone samples from 1976 to 1978 and during 1984 (Appendix 1). Although this species can tolerate reservoir environments, it is more common in large creeks and small rivers (Etnier and Stames 1993).

Of the nine valid species collected in electrofishing and gill net samples which were not encountered in cove rotenone surveys (alewife, American eel, Atlantic needlefish, brown trout, dusky darter, grass carp, inland silverside, lake sturgeon, rainbow trout), six are non-native.

Several of these species appeared in Chickamauga Reservoir after 1999 when cove rotenone 10

samples were terminated. Alewives were introduced into Watauga and Dale Hollow Reservoirs in 1976 by the Tennessee Wildlife Resources Agency (TWRA) to provide additional forage for sportfish. They have since expanded their distribution downstream in the Tennessee and Cumberland River systems. Atlantic needlefish were first collected in TVA samples in Pickwick Reservoir in 2007. They have since been collected by TVA biologists in Kentucky, Guntersville, and Chickamauga Reservoirs. It is unknown whether they entered the Tennessee River System from the Ohio River or from the Tombigbee River via the Tennessee-Tombigbee Waterway.

Similarly, inland silversides have invaded the Tennessee River system from 1991 to present.

This species was first collected in Kentucky Reservoir in 1991 and appeared in Chickamauga Reservoir in 2004. Grass carp is an Asian species that has been widely introduced to control aquatic vegetation. Brown and rainbow trout are stocked for recreational angling by the TWRA in the Hiwassee River, a tributary to Chickamauga Reservoir.

The three native species (American eel, lake sturgeon, dusky darter) are not commonly collected in Tennessee River reservoirs for a variety of reasons. Lake sturgeon were rare, if not extirpated, in the Tennessee River system by the mid-half of the twentieth century. Efforts, partially funded by TVA, began in 1998 to re-introduce this species to the Tennessee River. Subsequently, re-introduced individuals have been collected in recent times. Because American eels are catadromous (live in freshwater but migrate to saltwater to spawn), they are no longer common in the Tennessee River system due to the series of dams that impede their migration. The only TVA record in Chickamauga Reservoir was from the late 1970's (TVA 1980). This species presently may or may not occur naturally in the upper Tennessee River system; live individuals of this species have been seen for sale in bait shops on Fort Loudon Reservoir near Knoxville (J.W. Simmons, personal observation). Dusky darters are typically inhabitants of large creeks and rivers in areas with moderate current and woody debris (Etnier and Starnes 1993). This species' occurrence in Chickamauga Reservoir is represented by one individual collected during autumn 2009 in the Hiwassee River embayment (Simmons 2010a). Dusky darters have been collected on numerous occasions in recent years in TVA stream and river sampling in the Hiwassee River and its tributaries upstream from the impoundment (Table 4).

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Impingement samples Impingement samples have yielded four species, one of which is questionable, that were not collected with the use of rotenone, electrofishing, gill nets, hoop nets, or trap nets (banded sculpin, river chub, tangerine darter; and a questionable record, sawfin shiner). Of these, banded sculpin, river chub, and sawfin shiner were collected in impingement samples at Sequoyah Nuclear Plant and tangerine darter was collected in Watts Bar Nuclear Plant Supplemental Condenser Cooling Water intake impingement samples (Table 2) (TVA 1982; TVA 1985; TVA 2007b). All of the aforementioned species are typically inhabitants of creeks and small rivers and are rarely encountered in reservoir environments. These species may have been displaced during a high water event from their normal stream habitats into the reservoir, possibly as juveniles (e.g. Harvey 1987). Increased water velocities produced by power plant water intakes create, habitats different than those typically found in impounded waters. These species adapted to free-flowing environments may have been attracted to this habitat, and consequently were impinged. Of these, none were collected in large numbers (banded sculpin, seven individuals; river chub, seven individuals; tangerine darter, one individual). The collection of a tangerine darter in Watts Bar Nuclear Plant Supplemental Condenser Cooling Water intake impingement samples was surprising; this species is still extant in many free-flowing tributaries to the Tennessee River but was presumed to be extirpated from the mainstem Tennessee River due to impoundments (Etnier and Starnes 1993). The Watts Bar Nuclear Plant Supplemental Condenser Cooling Water intake is located in Watts Bar Reservoir, just upstream of Watts Bar Dam. Tangerine darters are present in the Emory River, a tributary to Watts Bar Reservoir, and this individual could have been displaced into the reservoir during a high flow event.

Most likely, sawfin shiners were misidentified as mimic shiners. TVA (1982) lists sawfin shiners as being collected in 1980-1981 Sequoyah Nuclear Plant impingement samples with no mention of mimic shiners, while TVA (1986b) lists only mimic shiners in a summary of species collected in Sequoyah Nuclear Plant impingement samples from 1981 to 1985 with no mention of sawfin shiners.

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Temporal Changes in Fish Species Occurrences Of the 83 valid species records obtained during TVA fish sampling in Chickamauga Reservoir from 1947 to 2009, six have not been collected in Chickamauga Reservoir since the 1970's (American eel, bigmouth buffalo, brown trout non-native, fathead minnow non-native, silver chub, and whitetail shiner); four have not been collected in Chickamauga Reservoir since the 1980's (banded sculpin, blackstripe topminnow, mimic shiner, and river chub); and 16 have not been collected in Chickamauga Reservoir since the 1990's (black bullhead, blackspotted topminnow, ghost shiner, goldfish non-native, grass carp non-native, highfin carpsucker, orangespotted sunfish, paddlefish, pugnose minnow, quillback, rainbow darter, rainbow trout non-native, river carpsucker, smallmouth redhorse, stripetail darter, and white sucker). Five species have been collected during 2000 to 2009 that were never previously collected in TVA samples in Chickamauga Reservoir (Atlantic needlefish non-native, dusky darter, inland silverside non-native, lake sturgeon, and tangerine darter).

These temporal changes in fish species occurrence are discussed in detail below by time period:

Species not collected since the 1970's Two of the six species that have not been collected since the 1970's are not native to the Tennessee River (brown trout and fathead minnow). Brown trout collected from Chickamauga Reservoir were presumably disoriented migrants from TWRA stocked populations in the Hiwassee River. Chickamauga Reservoir habitats would not be suitable long-term due to water temperatures that exceed the upper lethal limit for these cold water species. Fathead minnows were probably locally introduced by bait fisherman and were unable to establish a viable population. As previously discussed, natural populations of American eels have most likely been extirpated from Chickamauga Reservoir (and the majority of the Tennessee River) by the series of dams on the river system which impede downstream adult migration to reproduce and upstream migration by juveniles. Bigmouth buffalo were sporadically collected in cove rotenone samples in 1947, the 1950's, and the 1970's. During Sequoyah Nuclear Plant pre-operational sampling conducted during 1971 to 1978, 13 individuals were collected; two in gill nets and 11 in trap nets (TVA 1978). During Watts Bar Nuclear Plant pre-operational sampling conducted during 1977 to 1985, 12 individuals were collected in hoop nets (TVA 1986a). None were encountered while electrofishing or in gill nets. In the Tennessee River system, bigmouth 13

buffalo is the least encountered species of the three buffalo species occurring in the system, possibly due to loss of reproductive habitats from flood control (Etnier and Starnes 1993). This species spawns in response to spring floods, often in flooded fields. It is also important to note that of the 25 individuals collected, 23 were collected in hoop nets or trap nets and no individuals were collected while electrofishing. Lack of TVA records in recent times may be related to current sampling gear used (electrofishing and gill nets).

Silver chubs were collected during 1974 to 1978 in rotenone samples. The only other records from Chickamauga Reservoir were during 1977 to 1985 Watts Bar Nuclear Plant pre-operational sampling; one individual was collected while electrofishing and 32 individuals were collected in gill nets (TVA 1986a). During the past 15 years, TVA has not used gill nets in the inflow area of Chickamauga Reservoir where these individuals were collected. Therefore, the absence of this species during the past two decades may be related to the change in sampling methods.

Whitetail shiners are not typically encountered in reservoirs. The only TVA record of this species in Chickamauga Reservoir was from a 1971 cove rotenone survey (Appendix 1). This species is common in free-flowing stream and river tributaries to Chickamauga Reservoir and has been collected frequently at TVA tributary sampling sites during 1991 to 2010 (Tables 3 and 4). Whitetail shiners collected during 1971, were likely collected using cove rotenone because the sampling technique could easily include stream fish occurring near the mouth of a cove tributary.

Species not collected since the 1980's The four species that have not been encountered in Chickamauga Reservoir since the 1980's are all primarily found in stream or river environments and are rarely encountered in reservoirs (banded sculpin, blackstripe topminnow, mimic shiner, and river chub). The only records of banded sculpins and river chubs were from Sequoyah Nuclear Plant impingement samples (each represented by seven individuals) (TVA 1982; TVA 1985). Both of these species have been collected in TVA Chickamauga Reservoir stream and river tributary samples in recent years (Tables 3 and 4). Thus, these species are present in their preferred habitats within the Chickamauga Reservoir watershed, and probably were impinged as a result of displacement from tributaries. While mimic shiners can adapt to reservoir environments, they are more common in 14

stream environments. Mimic shiners were collected in 1976 to1978 rotenone samples and in Sequoyah Nuclear Plant impingement samples (Appendix 1; Table 3). This species has not been encountered in Chickamauga Reservoir tributaries in TVA stream sampling (Tables 3 and 4).

Etnier and Starnes (1993) indicate that mimic shiners are uncommon in this portion of the Tennessee River system. Blackstripe topminnows are represented by 3 rotenone collections from 1972 to 1981 (Appendix 1). This species is commonly confused with blackspotted topminnow (Etnier and Starnes 1993) and absence of this species from recent datasets may be due to misidentification. Backwater areas where this species occurs in reservoirs are not currently sampled during TVA electrofishing surveys. Blackspotted topminnows have been collected in recent years in Chickamauga Reservoir stream and river tributary samples, while blackstripe topminnows have not been collected since 1999 (Tables 3 and 4).

Species not collected since the 1990's Sixteen species have not been encountered in TVA samples in Chickamauga Reservoir since the 1990's (black bullhead, blackspotted topminnow, ghost shiner, goldfish, grass carp, highfin carpsucker, orangespotted sunfish, paddlefish, pugnose minnow, quillback, rainbow darter, rainbow trout, river carpsucker, smallmouth redhorse, stripetail darter, and white sucker). Of these, three are non-native (goldfish, grass carp, and rainbow trout) and four are primarily found in stream or river environments and are rarely encountered in reservoirs (blackspotted topminnow, rainbow darter, stripetail darter, and white sucker). Rainbow darters, stripetail darters, and white suckers have all been collected in recent TVA samples in free-flowing tributaries to Chickamauga Reservoir (Tables 3 and 4).

Black bullheads have never been common in TVA Chickamauga Reservoir samples. This species was collected periodically in rotenone samples in 1972, 1979, 1981-1983, and in 1993 (Appendix 1). Only one individual was collected in gill net surveys during Sequoyah Nuclear Plant pre-operational monitoring from 1971 to 1978 and six individuals were collected in gill nets near Sequoyah Nuclear Plant during 1980 to 1985 (TVA 1978; TVA 1986b). Four individuals were collected (two in gill nets, two in hoop nets) during Watts Bar Nuclear Plant pre-operational monitoring from 1977 to 1985 (TVA 1986a). Black bullheads and brown bullheads are very difficult to distinguish without counting gill rakers (Etnier and Starnes 1993).

It is possible that brown bullheads were mistaken for black bullheads, especially since brown 15

bullheads are much more common in reservoir habitats. Black bullheads have been collected in TVA Chickamauga Reservoir tributary stream and river fish samples from 1995 to 2007 (Table 3).

As previously discussed, ghost shiners were collected periodically in rotenone surveys from 1974 to 1999 in Chickamauga Reservoir and have not been encountered using any other sampling method. A majority of these records were from coves located between TRM's 471.7 and 478, which is the forebay area of the reservoir. Ghost shiners typically occur in the mid-water of large streams and reservoirs, making them difficult to collect. Electrofishing is conducted in shallow areas along shorelines which would greatly reduce the probability of collecting this minnow. Since 1999, electrofishing and gill nets have been the only sampling methods used in Chickamauga reservoir.

Very few highfin carpsuckers have been collected in TVA samples in Chickamauga Reservoir.

The only rotenone collection was during 1949 (Appendix 1). During 1994, one individual was collected while electrofishing at TRM 490.5 (Simmons 2010a) and two individuals, one in a gill net and one in a hoop net, were collected in Watts Bar Nuclear Plant pre-operational monitoring (TVA 1986a). This species is susceptible to change by siltation and impoundment, and is much more common in large free-flowing rivers than in reservoirs. This species is not very common within the Tennessee River system; it is much more abundant in the free-flowing rivers in the Gulf Coastal Plain to the south (Etnier and Starnes 1993).

River carpsuckers were collected periodically in TVA samples throughout Chickamauga Reservoir during the 1970's, 1980's, and early 1990's1 (Table 2). Although this species was present in samples over a 33-year period, a majority of the records were represented by one individual each. Only two individuals were collected by electrofishing (Simmons 2010a; TVA 1986a), 14 individuals were collected with gill nets (TVA 1978; TVA 1986a; Hevel 1987; Hickman et al. 1990; Hevel and Hickman 1992), eight individuals were collected with trap nets (TVA 1978), and one individual was collected with hoop nets (TVA 1986a). River carpsuckers After this report was completed, a juvenile river carpsucker was collected in a TVA electrofishing sample at Tennessee River Mile 529 (Chickamauga Reservoir inflow) on September 29, 2010.

16

were not collected in any free-flowing tributaries draining to Chickamauga Reservoir with the exception of the Hiwassee River (Tables 3 and 4). In the Tennessee River system, river carpsuckers are abundant in the lower Tennessee River, but less common in more upland areas in the eastern portion of the system (Etnier and Starnes 1993).

Similar to the other carpsuckers, quillbacks have rarely been encountered within Chickamauga Reservoir. In rotenone surveys, this species was collected only during 1947, 1950, 1970, and 1984 (Appendix 1). No individuals of this species have been collected in electrofishing samples, 22 individuals were collected with gill nets (TVA 1978; TVA 1986a; Hickman et al. 1990; Hevel and Hickman 1991; Hevel and Hickman 1992; Hickman and Buchanan 1995), and three individuals were collected with trap nets (TVA 1978). It is interesting to note that six of the 22 individuals collected in gill nets were during a 1991 embayment study (Hevel and Hickman 1992). Fifteen embayments within Chickamauga Reservoir were included in this study, four of which were near the upper end of impoundment of the Hiwassee River by Chickamauga Reservoir. This species was collected in three of the four Hiwassee River embayments near the upper end of the impounded portion of the Hiwassee River and were not encountered in any of the other 12 embayments sampled within Chickamauga Reservoir. This species has been consistently collected in the free-flowing section of the Hiwassee River during 1993 to 2007 (Table 4), which is consistent with its distribution throughout the Tennessee River system (affinity for un-impounded rivers) (Etnier and Starnes 1993).

Very few smallmouth redhorse have been collected in Chickamauga Reservoir. The most recent collection was during 1999, when one individual was collected in the Chickamauga Reservoir inflow and one individual was collected in the Hiwassee River embayment, both during electrofishing (Simmons 2010a). This species was collected in four rotenone samples from 1970 to 1977 (Appendix 1). Four individuals were collected in trap nets and two individuals were collected in gill nets during the 1970's and early 1980's (TVA 1978; TVA 1986a). One additional individual was collected while gill netting in 1994 (Hickman and Buchanan 1995).

Smallmouth redhorse typically occur in large rivers over gravel to boulder substrates with swift flow and occasionally occur in reservoirs, especially those with large tributaries (Etnier and Starnes 1993). Chickamauga Reservoir only has one large tributary, the Hiwassee River, which 17

probably limits the distribution of smallmouth redhorse in the reservoir. This species has been collected frequently in the free-flowing portions of the Hiwassee River system in TVA samples collected during 1991 to 2009 (Table 4).

Orangespotted sunfish occur sporadically in mainstem Tennessee River reservoirs, but are most common in backwaters of turbid, sluggish streams in west Tennessee (Etnier and Starnes 1993).

This species was collected in Chickamauga Reservoir rotenone samples from 1949 to 1990 (Appendix 1). The only other record was from a gill net sample in the early 1980's, represented by one individual (TVA 1986b). This species has not been collected in TVA samples from direct tributaries to Chickamauga Reservoir or in the Hiwassee River basin, most likely due to lack of preferred habitat (Tables 3 and 4). Since orangespotted sunfish prefer backwaters, such as those in coves of Chickamauga Reservoir, current sampling methods and sampling localities in Chickamauga Reservoir are less likely to encounter this species than the earlier rotenone sampling of coves.

Paddlefish are still widespread in mainstem Tennessee River impoundments but have not been collected in routine fish community monitoring conducted during 1993 to 2009 in Chickamauga Reservoir. A majority of paddlefish collections were in the inflow area of Chickamauga Reservoir. This species was collected in rotenone samples during 1977, 1979, and 1981 near TRM 524 (Appendix 1); 45 individuals were collected in gill nets during Watts Bar Nuclear Plant pre-operational monitoring near TRM 524 and 528; and nine were collected in gill nets near TRM 521 during 1990 and 1993 (TVA 1986a; Hevel and Hickman 1991; Hickman and Buchanan 1995). Other collections were made near Sequoyah Nuclear Plant (-TRM 484); 44 were collected in trap nets during Sequoyah Nuclear Plant preoperational monitoring during the 1970's and one was collected in a gill net in 1986 (TVA 1978; TVA 1987). It is important to note that no paddlefish were collected in electrofishing samples. Gill nets have not been used in samples from 1993 to 2009 in the inflow area of Chickamauga Reservoir which may explain the absence of this species in TVA samples during recent times.

In Chickamauga Reservoir TVA samples, pugnose minnows have been collected only with rotenone (Table 2). This species has not been encountered in any tributaries to Chickamauga 18

Reservoir (Tables 3 and 4). Chickamauga Reservoir is near the upper end of distribution of the pugnose minnow in the Tennessee River system where it does not appear to be as common as in the lower Tennessee River system (Etnier and Starnes 1993; Boschung and Mayden 2004). This species is too small to be collected in gill nets, hoop nets, or trap nets; thus, rotenone and electrofishing were the only other sampling methods used that may have detected this species.

The presence of pugnose minnows in rotenone samples only may indicate that current electrofishing samples are not conducted in habitats used by this species within Chickamauga Reservoir.

Summary and Conclusions The species composition of the fish assemblage of Chickamauga Reservoir has changed somewhat, but not markedly, over the decades of sampling by TVA. Although some species appear to have been lost between early and more recent sampling, and some species have appeared recently, the differences are readily explained as a result of known differences in effectiveness of various fish sampling methods and habitats they sample. A few early records appear to represent erroneous species identifications.

Of the 88 fish species records from Chickamauga Reservoir collected during 1947 to 2009, five are most likely erroneous. With the exclusion of these questionable records, 70 species were collected during rotenone sampling and 71 species were collected using electrofishing, gill nets, hoop nets, and trap nets. Impingement samples contained 49 valid species records.

Nine valid species records were collected in rotenone samples that were not collected with other sampling methods. Of these, five are not typically found in reservoirs or occur in shallow backwater areas of reservoirs that were not sampled during TVA electrofishing surveys and are too small to be captured with gill nets, hoop nets, or trap nets. Eight valid species records were collected during electrofishing, gill netting, hoop netting, and trap netting that were not encountered in rotenone samples. Of these, six are non-native, many of which were collected for the first time after rotenone sampling was terminated. The remaining three native species are not 19

commonly collected in Tennessee River reservoirs for a variety of reasons. All species collected in trap nets and hoop nets were also encountered in electrofishing and gill net surveys.

Three valid species records were obtained in impingement samples that were not encountered using any of the aforementioned sampling methods. These species are typically found in free-flowing streams or rivers and are rarely collected in reservoirs. Impingement, by definition, captures fish that are unable to resist the inflowing current of water intakes and become stuck on the intake screens. Impinged fish can be categorized in two groups; healthy but hapless individuals that accidently get caught and unhealthy fish that are lethargic, moribund, or dead and often out of their normal habitat. It is not unreasonable to suspect that a stream fish displaced into reservoir habitats might be lethargic, disoriented, or dead and vulnerable to drifting into the intake where it is impinged.

Of the 83 valid species records obtained during TVA fish sampling in Chickamauga Reservoir from 1947 to 2009, six have not been encountered in Chickamauga Reservoir since the 1970's, four have not been encountered since the 1980's, and 16 have not been encountered since the 1990's. Of these, five are non-native. Five additional species have been collected during 2000 to 2009 that were never previously collected in Chickamauga Reservoir, two of which are non-native. Of the 21 native species that have not been collected in recent times (2000 to 2009), nine are most adapted to stream/small river environments (whitetail shiner, banded sculpin, blackspotted topminnow, blackstripe topminnow, mimic shiner, river chub, rainbow darter, stripetail darter, white sucker, and black bullhead), five are most adapted to medium to large free-flowing rivers (bigmouth buffalo, highfin carpsucker, quillback, river carpsucker, and smallmouth redhorse), one species is catadromous (American eel) and has been severely affected by the series of dams that impede their migration, and five are not as susceptible to current collection methods or occur sporadically throughout the upper Tennessee River system (ghost shiner, pugnose minnow, silver chub, orangespotted sunfish, and paddlefish). Ten of the 21 native species that have not been collected during recent times were only collected in rotenone (eight species) or impingement samples (three species), which indicate that current sampling methods are not effective in documenting the presence of these species.

20

A similar analysis of recent and historical fish data was conducted for Guntersville Reservoir (two reservoirs downstream of Chickamauga Reservoir) and similar results were reported (Simmons 2010b). For example, highfin carpsucker, quillback, and smallmouth redhorse were collected only in a few historical cove rotenone samples; the only record of smallmouth redhorse was from 1959 and the only record of highfm carpsucker was from 1951. River carpsucker and bigmouth buffalo records were more numerous, but collections were sporadic; whitetail shiners were collected only by rotenone and in a creek inflow while seining; ghost shiners were collected in rotenone surveys and in a 1974 impingement sample; pugnose minnows and stripetail darters were only collected in rotenone samples; banded sculpins and river chubs were never collected; white suckers were only collected in an impingement sample; and rainbow darters were only collected in a stream inflow.

Overall, most species that have not been collected in recent times have never been collected frequently or in large numbers in Chickamauga Reservoir. Some species collected during rotenone surveys are not as susceptible to current sampling gear, thus their presence has not been detected during recent times. Impoundment of the Tennessee River, which eliminated or reduced habitats required for life history aspects such as reproduction and feeding, is the major limiting factor for many of these species. It is evident from TVA tributary stream data that a large portion of fish diversity within the Tennessee River system persists in free-flowing tributaries to reservoirs. Of the 64 species collected in direct tributaries to the Tennessee River within Chickamauga Reservoir, 35 were encountered in electrofishing and gill net sampling conducted during 1993 to 2009 within the reservoir (Table 3). Similarly, of the 91 species collected in the Tennessee portion of the Hiwassee River basin, 51 were encountered in Chickamauga Reservoir during electrofishing and gill netting from 1993 to 2009 (Table 4).

21

Literature Cited Baxter, D.S. and K.D. Gardner. 2000. Chickamauga Reservoir fisheries monitoring-1999 cove rotenone results. Tennessee Valley Authority, River System Operations and Environment. Knoxville, Tennessee. 78 p.

Baxter, D.S., K.D. Gardner, and G.D. Hickman. 2001. Watts Bar Nuclear Plant Supplemental Condenser Cooling Water System fish monitoring program. Tennessee Valley Authority.

Knoxville, Tennessee. 33 p.

Boschung, H.T. and R.L. Mayden. 2004. Fishes of Alabama. Smithsonian Books, Washington.

Etnier, D.A. and W.C. Starnes. 1993. The fishes of Tennessee. The University of Tennessee Press, Knoxville.

Harvey, B.C. 1987. Susceptibility of young of the year fishes to downstream displacement by flooding. Transactions of the American Fisheries Society, 116:851-855.

Hevel, K.W. 1987. A baseline study of the population dynamics of sauger (Stizostedion canadense) in Chickamauga reservoir, Tennessee. Tennessee Valley Authority, Office of natural resources and Economic Development. 34 p.

Hevel, K.W. and G.D. Hickman. 1991. Population survey of sauger in Chickamauga Reservoir, 1990-1991. Tennessee Valley Authority, River Basin Operations, Water Resources.

Norris, Tennessee. 13 p.

Hevel, K.W. and G.D. Hickman. 1992. Fish community assessment of selected Chickamauga Reservoir embayments. Tennessee Valley Authority, Resource Group, River Basin Operations, Water Resources. Norris, Tennessee. 20 p.

Hickman, G.D., K.W. Hevel, and E.M. Scott. 1989. Density, movement patterns, and spawning characteristics of sauger (Stizostedion canadense) in Chickamauga Reservoir, Tennessee-1988. Tennessee Valley Authority, River Basin Operations, Water Resources. Norris, Tennessee. 53 p.

Hickman, G.D., K.W. Hevel, and E.M. Scott. 1990. Population survey of sauger (Stizostedion canadense) in Chickamauga Reservoir, 1989. Tennessee Valley Authority, River Basin Operations, Water Resources. Norris, Tennessee. 26 p.

Hickman, G.D. and J.P. Buchanan. 1995. Chickamauga Reservoir sauger investigation 1993-1995 final project report. Tennessee Valley Authority, Water management, Resource Group. Norris, Tennessee. 18 p.

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Hickman, G. D. and T. A. McDonough. 1996. Assessing the Reservoir Fish Assemblage Index-A potential measure of reservoir quality. In: D. DeVries (Ed.) Reservoir symposium-Multidimensional approaches to reservoir fisheries management. Reservoir Committee, Southern Division, American Fisheries Society, Bethesda, MD. Pp 85-97.

Jennings, M. J., L. S. Fore, and J. R. Karr. 1995. Biological monitoring of fish assemblages in the Tennessee Valley reservoirs. Regulated Rivers 11:263-274.

Karr, J.R., K.D. Fausch, P.L. Angermeier, P.R. Yant, and I.J. Schlosser. 1986. Assessing biological integrity in running waters: a method and its rationale. Illinois Natural History Survey Special Publication 5. 28 p.

Kay, L.K. and D.S. Baxter. 2002. Effects of impingement on the aquatic populations in Chickamauga Reservoir. Tennessee Valley Authority, Resource Stewardship.

Knoxville, Tennessee. 10 p.

McDonough, T.A. and G.D. Hickman. 1999. Reservoir Fish Assemblage Index development: A tool for assessing ecological health in Tennessee Valley Authority impoundments. In:

Assessing the sustainability and biological integrity of water resources using fish communities. Simon, T. (Ed.) CRC Press, Boca Raton, pp 523-540.

Nelson, J.S., E.J. Crossman, H. Espinosa-Perez, L.T. Finley, C.R. Gilbert, R.N. Lea, and J.D.

Williams. 2004. Common and scientific names of fishes from the United States, Canada, and Mexico. American Fisheries Society, Special Publication 29, Bethesda, Maryland.

Simmons, J.W. 2010a. Comparison of fish species occurrence and trends in Reservoir Fish Assemblage Index Results in Chickamauga Reservoir before and after Watts Bar Unit 1 operation. Tennessee Valley Authority, Aquatic Monitoring. Chattanooga, Tennessee.

160 p.

Simmons, J.W. 2010b. Results of biological monitoring in the vicinity of Bellefonte Nuclear plant during spring, summer, and autumn 2009, and winter 2010, with an analysis of fish species occurrences in Guntersville Reservoir-a comparison of historical and recent data.

Tennessee Valley Authority, Biological and Water Resources. Chattanooga, Tennessee.

159 p.

Tennessee Valley Authority. 1976. Impingement at Watts Bar Steam Plant.

Tennessee Valley Authority. 1978. Preoperational fisheries report for the Sequoyah Nuclear Plant. 179 p.

Tennessee Valley Authority. 1980. Watts Bar Nuclear Plant preoperational fisheries monitoring report 1977-1979. 147 p.

Tennessee Valley Authority. 1982. Aquatic Environmental conditions in Chickamauga Reservoir during operation of Sequoyah Nuclear Plant, first annual report (1980 and 1981). Office of Natural Resources, Division of Water Resources. Knoxville, Tennessee. 246 p.

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Tennessee Valley Authority. 1983. Aquatic Environmental conditions in Chickamauga Reservoir during operation of Sequoyah Nuclear Plant, second annual report (1982).

Office of Natural Resources, Division of Water Resources. Knoxville, Tennessee. 239 p.

Tennessee Valley Authority. 1985. Aquatic Environmental conditions in Chickamauga Reservoir during operation of Sequoyah Nuclear Plant, fourth annual report (1984).

Office of Natural Resources, Division of Water Resources. Knoxville, Tennessee. 402 p.

Tennessee Valley Authority. 1986a. Preoperational assessment of water quality and biological resources of Chickamauga Reservoir, Watts Bar Nuclear Plant, 1973-1985. Office of Natural Resources and Economic Development, Division of Air and Water Resources.

Knoxville, Tennessee. 488 p.

Tennessee Valley Authority. 1986b. Aquatic Environmental conditions in Chickamauga Reservoir during operation of Sequoyah Nuclear Plant, fifth annual report (1985). Office of Natural Resources, Division of Water Resources. Knoxville, Tennessee. 309 p.

Tennessee Valley Authority. 1987. Aquatic Environmental conditions in Chickamauga Reservoir during operation of Sequoyah Nuclear Plant, sixth annual report (1986). Office of Natural Resources, Division of Water Resources. Knoxville, Tennessee. 112 p.

Tennessee Valley Authority. 1998. Aquatic Environmental conditions in the vicinity of Watts Bar Nuclear Plant during two years of operation, 1996-1997. Resource Group, Water Resources. Norris, Tennessee. 259 p.

Tennessee Valley Authority. 2007a. Fish impingement at Sequoyah Nuclear Plant during 2005 through 2007. Environmental Stewardship and Policy. Knoxville, Tennessee. 15 p.

Tennessee Valley Authority. 2007b. Fish impingement at Watts Bar Nuclear Plant supplemental condenser cooling water intake structure during 2005 through 2007.

Environmental Stewardship and Policy. Knoxville, Tennessee. 12 p.

Wallus, R. 2008. Pumpkinseed. Pages 123-140 in R. Wallus and T.P. Simon, editors.

Reproductive biology and early life history of fishes in the Ohio River drainage. Volume 6: Elassomatidae and Centrarchidae. CRC Press, Boca Raton, Florida.

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529 510 TRM 1 490 Sequoyah 0

10 20 Kilometers I

I I

Figure 1. Chickamauga Reservoir, including the Hiwassee River embayment. Red dots indicate the approximate locations of current RFAI fish sampling stations on Chickamauga Reservoir. Green dots indicate Tennessee (TRM) or Hiwassee River Miles (HiRM) for reference and are labeled approximately every 10 river miles.

25

tt Hiwassee River (TN)

Chickamaulp Reservoir Tribs N

0 20 40 Kilometers I

I I

I I

Figure 2. TVA tributary stream and river sampling locations within the Chickamauga Reservoir watershed. Red dots indicate sampling stations on direct tributaries to the Tennessee River (Chickamauga Reservoir). Green dots denote sampling stations on the Tennessee portion of the Hiwassee River and its tributaries.

26

Table 1. TVA cove rotenone locations and sample years in Chickamauga Reservoir TRM-Tennessee River mile; HiRM-Hiwassee River River Mile Year(s) Sampled i

TRM 471.7 TRM 472.8 TRM 475 TRM 472.2 TRM 475.7 TRM 476.2 TRM 478 TRM 483.6 TRM 484.7 TRM 487.5 TRM 489.6 TRM 492.6 TRM 495 TRM 495.1 TRM 505.4 TRM 506 TRM 507.3 TRM 508 TRM 524.6 HiRM 1.2 HiRM 2.5 HiRM 3.5 1954 1949-1951 1947,1950 1970 1970- 1976 1977-1993;1995,1997,1999 1950;1955-1957;1970- 1993;1995,1997,1999 1971 1970 1950, 1954; 1957 - 1959 1952 1970 1952; 1970- 1986 1987-1993;1995,1997,1999 1970 1970 1970 1971-1993;1995,1997,1999 1976-1993;1995,1997,1999 1970 1956,1970 1970 27

Table 2.

A comparison of overall species occurrences from current and historical TVA Chickamauga Reservoir fish collection data from electrofishing (EF), gill netting (GN), hoop netting (HN), trap netting (TN) and cove rotenone surveys, as well as data from fish impingement (impgmt) studies conducted at Sequoyah Nuclear Plant (SQN), Watts Bar Nuclear Plant (WBN), Watts Bar Supplemental Condenser Cooling Water (SCCW), and Watts Bar Steam Plant (WBSP). Records contained in parenthesis were only collected by HN or TN during the specified sampling period/locations. Species are listed alphabetically by common name. Asterisks denote questionable species records.

Data from a special Chickamauga Reservoir embayment study were from Hevel and Hickman (1992). Reservoir Fisheries Assemblage Index (RFAI) data (1993-2009) were from Simmons (2010). Cove rotenone records were taken from raw data files and from Baxter and Gardner (2000). Historic WBN EF, GN, and HIN collection records were from TVA (1980) and TVA (1986a). All data included as "WBN" were collected in the vicinity of Watts Bar Nuclear Plant. Historic SQN GN collection records were from TVA (1978);

TVA (1982); TVA (1985); TVA (1986b); and TVA (1987). Historic SQN TN records were from TVA (1978). All data included as "SQN" were collected in the vicinity of Sequoyah Nuclear Plant. Gill net data collected during sauger studies during 1986 to 1994 were from Hevel (1987); Hickman et al. (1989); Hickman et al. (1990); Hevel and Hickman (1991); and Hickman and Buchanan (1995). SQN impingement data collected during 1981-1985 were from TVA (1982); TVA (1983); TVA (1985); TVA (1986a).

SQN impingement data collected during 2001-2002 were from Kay and Baxter (2002) and data collected during 2005-2007 were from TVA (2007a). WBSP impingement data collected during 1974-1975 were from TVA (1976). WBN impingement data collected from 1996-1997 were from TVA (1998), WBN SCCW impingement data collected from 1999-2000 were from Baxter et al. (2001), and data collected from 2005-2007 were from TVA (2007b).

WBN/

SQN SCCW 1991 WBN GN/TN Sauger SQN Impgmt Embayment RFAI Cove EF/GN/HN 1971-1978 Study SQN Impgmt WBSP 1996-1997 Common Name Scientific Name Study EF/GN Rotenone 1977-1979 GN GN Impgmt 2001-2002 Impgmt 1999-2000 EF/GN 1993-2009 1947-1999 1982-1985 1980-1986 1986-1994 1981-1985 2005-2007 1974-1975 2005-2007 Alewife Alosa pseudoherengus X

X X

American eel Anguilla rostrata X

Atlantic needlefish Strongylura marina X

Banded sculpin Cottus carolinae X

Bigmouth buffalo Ictiobus cyprinellus X

(X)

X Black buffalo Ictiobus niger X

X X

Black bullhead Ameiurus melas X

X X

Black crappie Pomoxis nigromaculatus X

X X

X X

X X

X X

Black redhorse Moxostoma duquesnei X

X X

X X

Blackspotted Fundulus olivaceus X

topminnow Blackstripe Fundulus notatus X

topmainnow Blue catfish Ictalurusfurcatus X

X X

X X

X X

X X

X Bluegill Lepomis macrochirus X

X X

X X

X X

X X

X Bluntnose minnow Pimephales notatus X

X X

X X

Brook silverside Labidesthes sicculus X

X X

X X

Brown bullhead Ameiurus nebulosus X

X X

(X)

X X

X B row n trout Salm o trutta X

Bullhead minnow Pimephales vigilax X

X X

X X

X X

Channel catfish Ictalurus punctatus X

X X

X X

X X

X X

X 28

Table 2. (Continued)

WBN/

SQN SCCW 1991 WBN GN/TN Sauger SQN Impgmt Embayment RFAI Cove EF/GN/HN 1971-1978 Study SQN Impgmt WBSP 1996-1997 Study EF/GN Rotenone 1977-1979 GN GN Impgmt 2001-2002 Impgmt 1999-2000 Common Name Scientific Name EF/GN 1993-2009 1947-1999 1982-1985 1980-1986 1986-1994 1981-1985 2005-2007 1974-1975 2005-2007 Chestnut lamprey Ichthyomyzon castaneus X

X X

X X

X Common carp Cyprinus carpio X

X X

X X

X X

Dusky darter Percina sciera X

Emerald shiner Notropis atherinoides X

X X

X X

X X

Fathead minnow Pimephales promelas X

Flathead catfish Pylodictis olivaris X

X X

X X

X X

X X

X Freshwater drum Aplodinotus grunniens X

X X

X X

X X

X X

X G host shiner N otropis buchanani X

Gizzard shad Dorosoma cepedianum X

X X

X X

X X

X X

X Golden redhorse Moxostoma erythrurum X

X X

X X

X X

Golden shiner Notemigonus crysoleucas X

X X

X X

X X

Goldfish Carassius auratus X

X Grass carp Ctenopharyngodon idella X

Green sunfish Lepomis cyanellus X

X X

X X

X Highfin carpsucker Carpiodes velifer X

X X

I n l a n d s i l v e r s i d e M e n i d i a b e r y l l i n a X

Lake sturgeon Acipenserfulvescens X

Largemouth bass Micropterus salmoides X

X X

X X

X X

X X

Largescale Campostoma oligolepis X

stoneroller Logperch Percina caprodes X

X X

X X

X X

X Longear sunfish Lepomis megalotis X

X X

X X

X X

L ongnose gar L ep isosteus osseus X

X X

X X

X M im ic sh in e r N o tr o p is v o lu c e llu s X

X Mooneye Hiodon tergisus X

X X

X X

X X

X M ud darter*

Etheostoma asprigene*

X Northern hogsucker Hypentelium nigricans X

X X

X X

Orangespotted Lepomis humilis X

X sunfish Orangethroat Etheostoma spectabile*

X darter*

Paddlefish Polyodon spathula X

X X

X Pugnose minnow Opsopoeodus emiliae X....

Pumpkinseed*

Lepomis gibbosus*

Quillback Carpiodes cyprinus X

X X

X X

R ainbow darter E theostom a caeruleum X

Rainbow trout Oncorhynchus mykiss X

X X

Redbreast sunfish Lepomis auritus X

X X

X X

X X

X 29

Table 2. (Continued)

WBN/

SQN SCCW 1991 WBN GN/TN Sauger SQN Impgmt Embayment RFAI Cove EF/GN/IIN 1971-1978 Study SQN lmpgmt WBSP 1996-1997 Study EF/GN Rotenone 1977-1979 GN GN Impgmt 2001-2002 Impgmt 1999-2000 Common Name Scientific Name EF/GN 1993-2009 1947-1999 1982-1985 1980-1986 1986-1994 1981-1985 2005-2007 1974-1975 2005-2007 Redear sunfish Lepomis microlophus X

X X

X X

X X

X X

X River carpsucker Carpiodes carpio X

X X

X X

X River chub Nocomis micropogon X

River redhorse Moxostoma carinatum X

X X

X X

Rock bass Ambloplites rupestris X

X X

X X

X Sauger Sander canadensis X

X X

X X

X X

X Sawfin shiner*

Notropis sp. *

(undescribed)

Shortnose gar*

Lepisosteus platostomus*

X X

X X

X Silver chub Macrhybopsis storeriana X

X X

Silver redhorse Moxostoma anisurum X

X X

X X

Skipjack herring Alosa chrysochloris X

X X

X X

X X

X X

X Smallmouth bass Micropterus dolomieu X

X X

X X

X X

SmalImouth ctiobus bubalus X

X X

X X

X X

buffalo Smalrmouth Moxostoma breviceps X

X X

(X)

X redhorse Spotfin shiner Cyprinella spiloptera X

X X

X X

X Spotted bass Micropterus punctulatus X

X X

X X

X X

X X

Spotted gar Lepisosteus oculatus X

X X

X X

X Spotted sucker Minytrema melanops X

X X

X X

X X

Steelcolor shiner Cyprinella whipplei X

X X

X Striped bass Morone saxatilis X

X X

X X

X X

X X

X Striped shiner Luxilus chrysocephalus X

X X

Stripetail darter Etheostoma kennicotti X

Tangerine darter Percina aurantiaca X

Threadfin shad Dorosoma petenense X

X X

X X

X X

X X

X Walleye Sander vitreus X

X X

X Warmouth Lepomis gulosus X

X X

X X

X X

X Western Western Gambusia affinis X

X X

X mosquitofish White bass Morone chrysops X

X X

X X

X X

X X

X White crappie Pomoxis annularis X

X X

X X

X X

X X

X Whitetail shiner Cyprinella galactura X

White sucker Catostomus commersoni X

X X

X X

Yellow bass Morone mississippiensis X

X X

X X

X X

X X

X Yellow bullhead Ameiurus natalis X

X X

X X

X X

Yellow perch Perca flavescens X

X X

X X

X X

X Total number of species:

47 60 73 57 50 42 44 25 20 26 30

Table 3. Fish species collected during TVA stream sampling in direct tributaries to the Tennessee River within Chickamauga Reservoir, 1995-2009. No sampling was conducted during 2010. Species are listed alphabetically by common name.

Collected in 1993-2009 Year(s) Collected Common Name Scientific name RFAI Samples 1995-2007 American brook lamprey Lampetra appendix 1995 Banded darter Etheostoma zonale 1995-2009 Banded sculpin Cottus carolinae 1995-2008 Bigeye chub Hybopsis amblops 1995-2007 Black bullhead Ameiurus melas 1995-2009 Black crappie Pomoxis nigromaculatus X

1995-2008 Black redhorse Moxostoma duquesnei X

1995-2009 Blackside snubnose darter Etheostoma duryi 1995-2009 Blackspotted topminnow Fundulus olivaceus 1999 Blackstripe topminnow Fundulus notatus 1995-2009 Bluegill Lepomis macrochirus X

1995-2008 Blueside darter Etheostomajessiae 1995-2009 Bluntnose minnow Pimephales notatus X

1995-2005 Brook silverside Labidesthes sicculus X

1999 Bullhead minnow Pimephales vigilax X

1999-2003 Channel catfish Ictalurus punctatus X

1995 Chestnut lamprey Ichthyomyzon castaneus X

1995-2008 Creek chub Semotilus atromaculatus 1995-1999 Dusky darter Percina sciera X

1995-2003 Emerald shiner Notropis atherinoides X

1995-2008 Fantail darter Etheostomaflabellare 1999-2008 Fathead minnow Pimephales promelas 1999-2009 Freshwater drum Aplodinotus grunniens X

1999-2009 Gizzard shad Dorosoma cepedianum X

1995-2009 Golden redhorse Moxostoma erythrurum X

1995-2009 Golden shiner Notemigonus crysoleucas X

1996 Goldfish Carassius auratus 1995-2009 Green sunfish Lepomis cyanellus X

1995-2008 Greenside darter Etheostoma blennioides 1995-2009 Largemouth bass Micropterus salmoides X

1995-2009 Largescale stoneroller Campostoma oligolepis X

1995-2009 Logperch Percina caprodes X

1995-2009 Longear sunfish Lepomis megalotis X

2007 Longnose gar Lepisosteus osseus X

1999-2004 Mottled sculpin Cottus bairdii 1995-2005 Mountain shiner Lythrurus lirus 1995-2008 Northern hogsucker Hypentelium nigricans X

1995-2008 Northern studfish Fundulus catenatus 31

Table 3. (Continued)

Collected in 1993-2009 Year(s) Collected Common Name Scientific name RFAI Samples 1995-2009 Rainbow darter Etheostoma caeruleum 1996-2005 Rainbow trout Oncorhynchus mykiss 1995-2009 Redbreast sunfish Lepomis auritus X

1995-2009 Redear sunfish Lepomis microlophus X

1995-2009 Redline darter Etheostoma rufilineatum 2004 River chub Nocomis micropogon 1995-2008 Rock bass Ambloplites rupestris X

1996 Scarlet shiner Lythrurusfasciolaris 2008 Silver redhorse Moxostoma anisurum X

1995-2008 Smallmouth bass Micropterus dolomieu X

1995-2009 Snubnose darter Etheostoma simoterum 1995-2009 Spotfin shiner Cyprinella spiloptera X

1995-2008 Spotted bass Micropterus punctulatus X

1995-2009 Spotted sucker Minytrema melanops X

1996-2005 Steelcolor shiner Cyprinella whipplei X

1995-2009 Striped shiner Luxilus chrysocephalus X

2002-2007 Stripetail darter Etheostoma kennicotti 1995-2003 Telescope shiner Notropis telescopus 1995-2009 Warmouth Lepomis gulosus X

1995-2008 Warpaint shiner Luxilus coccogenis 1995-2008 Western blacknose dace Rhinichthys obtusus 1995-2009 Western mosquitofish Gambusia affinis X

1995-2009 White sucker Catostomus commersoni 1995-2008 Whitetail shiner Cyprinella galactura 1995-2007 Yellow bullhead Ameiurus natalis X

1996-2008 Yellow perch Percaflavescens X

Total number of species 64 Total number collected both in tributary streams and in RFAI samples 35 (55%)

32

Table 4. Fish species collected during TVA stream and river sampling in the Tennessee portion of the Hiwassee River and its tributaries, 1991-2010. Species are listed alphabetically by common name.

Collected in 1993-2009 Year(s) Collected Common Name Scientific name RFAI Samples 1991-2009 American brook lamprey Lampetra appendix 1991-2010 Banded darter Etheostoma zonale 1993-2010 Banded sculpin Cottus carolinae 1993-2010 Bigeye chub Hybopsis amblops 1992-2009 Black buffalo Ictiobus niger X

2003, 2008 Black bullhead Ameiurus melas 1992-2010 Black crappie Pomoxis nigromaculatus X

1991-2010 Black redhorse Moxostoma duquesnei X

1999-2007 Blackside snubnose darter Etheostoma duryi 1993-2010 Blackspotted topminnow Fundulus olivaceus 1993 Blackstripe topminnow Fundulus notatus 2009 Blueback herring Alosa aestivalis 1993-2007 Bluebreast darter Etheostoma camurum 1991-2010 Bluegill Lepomis macrochirus X

1993-2008 Blueside darter Etheostomajessiae 1995-2009 Bluntnose minnow Pimephales notatus X

1993-2010 Brook silverside Labidesthes sicculus X

1994-2007 Brown bullhead Ameiurus nebulosus X

1991-2009 Brown trout Salmo trutta 1991-2010 Central stoneroller Campostoma anomalum 1991-2010 Channel catfish Ictalurus punctatus X

1991-2010 Chestnut lamprey lchthyomyzon castaneus X

1992-2001 Common carp Cyprinus carpio X

1993-2010 Creek chub Semotilus atromaculatus 1993-2010 Dusky darter Percina sciera X

1993-2007 Emerald shiner Notropis atherinoides X

1993-2008 Fathead minnow Pimephales promelas 1995 Flame chub Hemritremiaflammea 1993-2009 Flathead catfish Pylodictis olivaris X

1991-2010 Freshwater drum Aplodinotus grunniens X

1991-2010 Gilt darter Percina evides 1991-2010 Gizzard shad Dorosoma cepedianum X

1991-2010 Golden redhorse Moxostoma erythrurum X

1993-2008 Golden shiner Notemigonus crysoleucas X

1991-2010 Green sunfish Lepomis cyanellus X

1991-2010 Greenside darter Etheostoma blennioides 1991-2010 Largemouth bass Micropterus salmoides X

33

Table 4. (Continued)

Collected in 1993-2009 Year(s) Collected Common Name Scientific name RFAI Samples 2001-2009 Largescale stoneroller Campostoma oligolepis X

2006, 2008 Least brook lamprey Lampetra aepyptera 1991-2010 Logperch Percina caprodes X

1993-2010 Longear sunfish Lepomis megalotis X

1993-2010 Longnose gar Lepisosteus osseus X

1991-2010 Mirror shiner Notropis spectrunculus 1992-2007 Mooneye Hiodon tergisus X

1991-2010 Mottled sculpin Cottus bairdii 1993-2010 Mountain brook lamprey Ichthyomyzon greeleyi 1995-2006 Mountain shiner Lythrurus lirus 1991-2010 Northern hogsucker Hypentelium nigricans X

1999-2008 Northern studfish Fundulus catenatus 1991-2009 Ohio lamprey Ichthyomyzon bdellium 1995-2001 Olive darter Percina squamata 1993-2007 Quillback Carpiodes cyprinus 1995-2008 Rainbow darter Etheostoma caeruleum 1991-2010 Rainbow trout Oncorhynchus mykiss 1991-2010 Redbreast sunfish Lepomis auritus X

1991-2010 Redear sunfish Lepomis microlophus X

1991-2010 Redline darter Etheostoma rufifineatum 1999, 2005 River carpsucker Carpiodes carpio X

1991-2010 River chub Nocomis micropogon 1991-2009 River redhorse Moxostoma carinatum X

1991-2010 Rock bass Ambloplites rupestris X

1991-2010 Sauger Sander canadense X

1992-2009 Silver redhorse Moxostoma anisurum X

1993-2009 Smallmouth bass Micropterus dolomieu X

1991-2009 Smallmouth buffalo Ictiobus bubalus X

1991-2009 Smallmouth redhorse Moxostoma breviceps X

1991-2009 Snail darter Percina tanasi 1991-2010 Snubnose darter Etheostoma simoterum 1993-2010 Spotfin shiner Cyprinella spiloptera X

1991-2010 Spotted bass Micropterus punctulatus X

2005 Spotted gar Lepisosteus oculatus X

1991-2010 Spotted sucker Minytrema melanops X

1993-2008 Steelcolor shiner Cyprinella whipplei X

1991-2010 Striped bass Morone saxatilis X

1991-2010 Striped shiner Luxilus chrysocephalus X

1993-2009 Tangerine darter Percina aurantiaca 34

Table 4. (Continued)

Collected in 1993-2009 Year(s) Collected Common Name Scientific name RFAI Samples 1991-2009 Telescope shiner Notropis telescopus 1991-2010 Tennessee shiner Notropis leuciodus 1993-2006 Threadfin shad Dorosoma petenense X

1999, 2001 Walleye Sander vitreum X

1993-2010 Warmouth Lepomis gulosus X

1991-2010 Warpaint shiner Luxilus coccogenis 1993-2010 Western blacknose dace Rhinichthys obtusus 1993-2010 Western mosquitofish Gambusia affinis X

1991-2008 White bass Morone chrysops X

1994-2010 White crappie Pomoxis annularis X

1993-2008 White sucker Catostomus commersoni 1991-2010 Whitetail shiner Cyprinella galactura 1991-2010 Yellow bass Morone mississippiensis X

1993-2010 Yellow bullhead Ameiurus natalis X

1991-2010 Yellow perch Percaflavescens X

Total number of species 91 Total number collected both in the Hiwassee River 51(56%)

and its tributaries and in RFAI samples 35

Appendix 1. Fish species collected, by year, from 1947 to 1999 in TVA cove rotenone surveys, Chickamauga Reservoir. Tennessee River Mile (TRM) and Hiwassee River Mile (HiRM) ranges are reservoir segments where sampling occurred in various coves throughout that particular river reach. Fish species are listed in alphabetical order by common name.

• 1999 Cove rotenone records are from Baxter and Gardner (2000). Exact cove locations for 1999 species records were not specified and are listed in the TRM 471.7-478 column. 1999 samples were collected in coves near TRM 476.2, 478, 495.1, 508, and 524.6. **Denotes questionable species records.

Common Name Scientific Name TRM 471.7-478 TRM 483.6-487.5 TRM 489.6-495 HiRM 1.2-3.5 TRM 505.4-508 TRM 524.6 Bigmouth buffalo Ictiobus cyprinellus Black buffalo Ictobus niger Black bullhead Ameiurus melas Black crappie Pomoxis nigromaculatus 1947 1970 1975 1955 1971 1999*

1981 1950 1954 1972 1979 1980 1981 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1999*

1955 1956 1950 1957 1957 1970 1971 1959 1979 1983 1952 1970.

1977 1979 1980 1981 1985 1988 1989 1990 1991 1992 1993 1995 1997 1970 1972 1970 1956 1971 1972 1981 1982 1983 1980 1981 1985 1988 1989 1990 1991 1992 1993 1995 1997 1978 1986 1989 1997 1983 1993 1986 1987 1988 1989 1990 1991 1992 1993 1995 1997 Black redhorse Moxostoma duquesnei 1972 1976 1979 36

Appendix 1. (Continued)

Common Name Scientific Name TRM 471.7-478 TRM 483.6-487.5 TRM 489.6-495 HiRM 1.2-3.5 TRM 505.4-508 TRM 524.6 Black redhorse (Continued)

Blackspotted topminnow Blackstripe topminnow Blue catfish Bluegill Moxostoma duquesnei Fundulus olivaceus Fundulus notatus Ictalurusfurcatus Lepomis macrochirus 1976 1999*

1973 1974 1977 1978 1993 1999*

1976 1977 1980 1986 1974 1975 1976 1977 1978 1979 1980 1982 1983 1984 1985 1986 1995 1997 1976 1981 1952 1978 1980 1982 1972 1972 1978 1947 1950 1951 1954 1955 1956 1957 1972 1973 1975 1980 1992 1999*

1947 1949 1950 1954 1957 1958 1959 1971 1970 1976 1980 1950 1954 1957 1952 1970 1971 1956 1970 1970 1971 1972 1976 1977 1978 37

Appendix 1. (Continued)

Common Name Scientific Name TRM 471.7-478 TRM 483.6-487.5 TRM 489.6-495 HiRM 1.2-3.5 TRM 505.4-508 TRM 524.6 Bluegill (Continued)

Bluntnose minnow Brook silverside Lepomis macrochirus Pimephales notatus Labidesthes sicculus 1951 1954 1955 1957 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1995 1997 1999*

1949 1972 1976 1981 1984 1997 1999*

1949 1950 1954 1958 1959 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1995 1997 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1995 1997 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1995 1997 1988 1989 1990 1993 1995 1976 1977 1981 1972 1993 1995 1997 1971 1972 1973 1991 1992 1993 1995 1997 1971 1972 1973 1954 1958 1956 38

Appendix 1. (Continued)

Common Name Scientific Name TRM 471.7-478 TRM 483.6-487.5 TRM 489.6-495 HiRM 1.2-3.5 TRM 505.4-508 TRM 524.6 Brook silverside (Continued)

Brown bullhead Bullhead minnow Labidesthes sicculus Ameiurus nebulosus Pimephales vigilax 1956 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1995 1997 1999*

1982 1984 1985 1986 1987 1988 1989 1990 1999*

1950 1951 1957 1971 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1995 1997 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1995 1997 1982 1983 1984 1986 1987 1988 1989 1990 1991 1992 1993 1995 1983 1987 1988 1989 1990 1991 1992 1993 1995 1997 1976 1977 1980 1981 1985 1986 1987 1988 1990 1983 1986 1989 1991 1993 1995 1957 1971 1971 1974 1975 1976 1971 1972 1974 1975 39

Appendix 1. (Continued)

Common Name Scientific Name TRM 471.7-478 TRM 483.6-487.5 TRM 489.6-495 HiRM 1.2-3.5 TRM 505.4-508 TRM 524.6 Bullhead minnow (Continued)

Channel catfish Pimephales vigilax lctalurus punctatus 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1995 1997 1999*

1947 1949 1950 1951 1954 1955 1956 1957 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1977 1978 1979 1980 1982 1984 1985 1986 1987 1990 1991 1992 1993 1995 1997 1952 1970 1971 1972 1974 1975 1976 1977 1978 1979 1980 1981 1983 1984 1985 1988 1990 1991 1976 1977 1978 1979 1980 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1995 1997 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1995 1997 1976 1977 1978 1979 1980 1981 1982 1983 1985 1986 1987 1988 1989 1990 1991 1992 1993 1997 1950 1954 1957 1958 1959 1971 1956 1970 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1981 1982 1983 1984 1985 1987 1988 1989 40

Appendix 1. (Continued)

Common Name Scientific Name TRM 471.7-478 TRM 483.6-487.5 TRM 489.6-495 HiRM 1.2-3.5 TRM 505.4-508 TRM 524.6 Channel catfish (Continued)

Ictalurus punctatus Chestnut lamprey Ichthyomyzon castaneus Common carp Cyprinus carpio 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1997 1999*

1950 1995 1999*

1947 1950 1951 1954 1956 1957 1970 1971 1972 1973 1974 1975 1976 1978 1979 1980 1981 1982 1984 1985 1986 1987 1990 1991 1992 1993 1997 1954 1959 1970 1971 1981 1952 1971 1972 1973 1974 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1988 1956 1970 1984 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1991 1976 1977 1978 1979 1980 1981 1982 1983 1985 1986 1987 1988 1989 1990 1991 1992 41

Appendix 1. (Continued)

Common Name Scientific Name TRM 471.7-478 TRM 483.6-487.5 TRM 489.6-495 HiRM 1.2-3.5 TRM 505.4-508 TRM 524.6 Common Carp (Continued)

Emerald shiner Fathead minnow Flathead catfish Cyprinus carpio Notropis atherinoides Pimephales promelas Pylodictis olivaris 1989 1990 1991 1992 1999*

1950 1972 1973 1974 1975 1976 1977 1978 1979 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1995 1997 1999*

1949 1950 1951 1954 1955 1957 1970 1971 1972 1971 1972 1974 1975 1976 1977 1979 1980 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1995 1997 1972 1977 1978 1979 1980 1982 1983 1985 1986 1987 1988 1989 1991 1992 1993 1995 1997 1977 1978 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1993 1995 1997 1954 1957 1958 1959 1970 1971 1979 1952 1970 1971 1972 1973 1974 1975 1976 1977 1956 1970 1970 1971 1972 1973 1974 1975 1976 1977 1978 1976 1977 1991 42

Appendix 1. (Continued)

Common Name Scientific Name TRM 471.7-478 TRM 483.6-487.5 TRM 489.6-495 HiRM 1.2-3.5 TRM 505.4-508 TRM 524.6 Flathead catfish (Continued)

Freshwater drum Pylodictis olivaris Aplodinotus grunniens 1973 1974 1975 1976 1977 1978 1979 1980 1981 1985 1986 1987 1989 1990 1991 1992 1993 1995 1997 1999*

1949 1950 1951 1954 1955 1956 1957 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1978 1979 1980 1981 1982 1983 1988 1989 1990 1992 1993 1995 1982 1986 1989 1990 1991 1992 1997 1950 1954 1957 1958 1959 1970 1971 1952 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1956 1970 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1995 1997 43

Appendix 1. (Continued)

Common Name Scientific Name TRM 471.7-478 TRM 483.6-487.5 TRM 489.6-495 HiRM 1.2-3.5 TRM 505.4-508 TRM 524.6 Freshwater drum (Continued)

Ghost shiner Gizzard shad Aplodinotus grunniens Notropis buchanani Dorosoma cepedianum 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1995 1997 1999*

1982 1987 1992 1995 1997 1999*

1947 1949 1950 1951 1954 1955 1956 1957 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1990 1991 1992 1993 1995 1997 1991 1992 1993 1995 1997 1974 1986 1988 1997 1950 1954 1957 1958 1959 1970 1971 1952 1970 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1956 1970 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1986 1988 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1995 1997 44

Appendix 1. (Continued)

Common Name Scientific Name TRM 471.7-478 TRM 483.6-487.5 TRM 489.6-495 HiRM 1.2-3.5 TRM 505.4-508 TRM 524.6 Gizzard shad (Continued)

Golden redhorse (Continued)

Dorosoma cepedianum Moxostoma erythrurum 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1995 1997 1999*

1951 1955 1956 1957 1970 1971 1972 1973 1974 1975 1977 1978 1979 1980 1983 1991 1995 1997 1999*

1973 1975 1976 1977 1978 1979 1980 1981 1982 1992 1993 1995 1997 1992 1993 1995 1997 1959 1971 1970 1974 1975 1977 1979 1984 1989 1990 1995 1997 1976 1977 1978 1979 1980 1981 1982 1983 1984 1970 1970 1970 1971 1972 1973 1974 1976 1977 1980 1981 1985 1986 1989 1990 1992 1971 1972 1973 1974 1975 1976 1977 1978 1979 1976 1979 1990 1976 1977 1978 1980 1981 1982 1983 1984 1985 Golden shiner Notemigonus crysoleucas 45

Appendix 1. (Continued)

Common Name Scientific Name TRM 471.7-478 TRM 483.6-487.5 TRM 489.6-495 HiRM 1.2-3.5 TRM 505.4-508 TRM 524.6 Golden shiner (Continued)

Goldfish Green sunfish Notemigonus crysoleucas Carassius auratus Lepomis cyanellus 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1995 1997 1999*

1954 1956 1999*

1949 1950 1951 1954 1956 1957 1970 1971 1972 1973 1974 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1985 1986 1987 1988 1989 1990 1991 1992 1993 1995 1997 1979 1952 1970 1971 1973 1977 1978 1979 1980 1981 1982 1983 1984 1986 1987 1989 1990 1991 1993 1995 1997 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1995 1997 1986 1987 1988 1989 1990 1991 1992 1993 1995 1997 1970 1970 1950 1957 1958 1959 1970 1970 1971 1972 1973 1975 1976 1977 1979 1980 1981 1982 1983 1984 1987 1988 1989 1990 1991 1992 1993 1995 1997 1977 1979 1980 1982 1983 1984 1985 1987 1988 1989 1990 1991 1993 1995 1997 46

Appendix 1. (Continued)

Common Name Scientific Name TRM 471.7-478 TRM 483.6-487.5 TRM 489.6-495 HiRM 1.2-3.5 TRM 505.4-508 TRM 524.6 Green sunfish (Continued)

Lepomis cyanellus Carpiodes velifer Micropterus salmoides Highfin carpsucker Largemouth bass 1988 1989 1990 1991 1992 1993 1995 1997 1999*

1949 1947 1949 1950 1951 1954 1955 1956 1957 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1950 1954 1957 1958 1959 1970 1971 1952 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1995 1997 1956 1970 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1995 1997 1976 1977 1978 1979 1980 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1995 1997 47

Appendix 1. (Continued)

Common Name Scientific Name TRM 471.7-478 TRM 483.6-487.5 TRM 489.6-495 HiRM 1.2-3.5 TRM 505.4-508 TRM 524.6 Largemouth bass (Continued)

Largescale stoneroller Logperch Micropterus salmoides Campostoma oligolepis Percina caprodes 1993 1995 1997 1999*

1950 1973 1976 1977 1978 1980 1997 1999*

1950 1954 1956 1957 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1954 1957 1958 1974 1976 1977 1978 1979 1980 1983 1984 1990 1992 1993 1997 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1995 1956 1978 1980 1982 1995 1971 1972 1973 1976 1977 1978 1980 1984 1986 1988 1989 1990 1991 1992 1993 1995 1997 1988 1984 48

Appendix 1. (Continued)

Common Name Scientific Name TRM 471.7-478 TRM 483.6-487.5 TRM 489.6-495 HiRM 1.2-3.5 TRM 505.4-508 TRM 524.6 Logperch (continued)

Longear sunfish Longnose gar Percina caprodes Lepomis megalotis Lepisosteus osseus 1992 1993 1995 1997 1999*

1949 1951 1954 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1995 1997 1999*

1950 1970 1972 1975 1976 1978 1997 1950 1954 1958 1959 1970 1971 1971 1952 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1984 1985 1986 1987 1989 1990 1970 1972 1973 1977 1978 1980 1982 1984 1985 1986 1987 1989 1993 1983 1985 1989 1990 1991 1992 1997 1977 1978 1979 1980 1982 1983 1970 1978 1980 1981 1984 1985 1978 1979 1980 1982 1983 1984 49

Appendix 1. (Continued)

Common Name Scientific Name TRM 471.7-478 TRM 483.6-487.5 TRM 489.6-495 HiRM 1.2-3.5 TRM 505.4-508 TRM 524.6 Longnose gar (Continued)

Mimic shiner Mooneye Mud darter**

Northern hogsucker Orangespotted sunfish Lepisosteus osseus Notropis volucellus Hiodon tergisus Etheostoma asprigene Hypentelium nigricans Lepomis humilis 1979 1980 1982 1983 1984 1987 1988 1993 1997 1999*

1976 1977 1978 1949 1950 1955 1956 1957 1970 1976 1972 1950 1955 1972 1973 1975 1976 1978 1979 1980 1986 1993 1999*

1949 1950 1951 1956 1988 1990 1992 1995 1985 1988 1990 1992 1993 1997 1989 1990 1997 1977 1984 1976 1952 1973 1974 1977 1970 1973 1977 1954 1957 1958 1959 1970 1954 1957 1957 1971 1972 1976 1977 1971 1972 1979 1980 1970 1970 1971 1972 1973 1980 50

Appendix 1. (Continued)

Common Name Scientific Name TRM 471.7-478 TRM 483.6-487.5 TRM 489.6-495 HiRM 1.2-3.5 TRM 505.4-508 TRM 524.6 Orangespotted sunfish (continued)

Orangethroat darter**

Paddlefish Pugnose minnow Lepomis humilis Etheostoma spectabile Polyodon spathula Opsopoeodus emiliae 1957 1971 1972 1973 1975 1979 1975 1974 1980 1990 1977 1979 1981 1986 1975 1984 Quillback Rainbow darter Redbreast sunfish Carpoides cyprinus Etheostoma caeruleum Lepomis auritus 1947 1950 1974 1976 1977 1980 1997 1976 1980 1981 1982 1983 1984 1986 1987 1988 1989 1990 1991 1992 1950 1970 1975 1979 1984 1985 1987 1990 1970 1979 1995 1997 1976 1978 1981 1982 1983 1984 1986 1987 1988 1989 1990 1991 1992 1970 1984 1958 1976 1978 1979 1981 1982 1983 1984 1986 1987 1988 1990 1991 1992 1977 1983 1990 1991 1995 51

Appendix 1. (Continued)

Common Name Scientific Name TRM 471.7-478 TRM 483.6-487.5 TRM 489.6-495 HiRM 1.2-3.5 TRM 505.4-508 TRM 524.6 Redbreast sunfish Lepomis auritus (Continued)

Redear sunfish River carpsucker River redhorse Lepomis microlophus Carpiodes carpio Moxostoma carinatum 1993 1995 1997 1999*

1950 1954 1955 1956 1957 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1995 1997 1999*

1972 1973 1984 1956 1972 1974 1993 1995 1997 1993 1995 1997 1957 1958 1959 1970 1971 1952 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1995 1997 1956 1970 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1995 1997 1976 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1995 1997 1988 1990 1991 1988 1990 1972 1976 1984 1978 1959 52

Appendix 1. (Continued)

Common Name Scientific Name TRM 471.7-478 TRM 483.6-487.5 TRM 489.6-495 HiRM 1.2-3.5 TRM 505.4-508 TRM 524.6 Rock bass Sauger Ambloplites rupestris Sander canadensis 1973 1947 1951 1954 1956 1973 1974 1975 1976 1977 1978 1985 1995 1997 1999*

1947 1949 1979 1974 1975 1976 1970 1954 1957 1958 1959 1970 1972 1973 1974 1975 1976 1977 1978 1986 1997 1956 1970 1970 1973 1974 1975 1976 1977 1978 1979 1980 1990 1991 1997 1986 Shortnose gar**

Silver chub Lepisosteus platostomus Macrhybopsis storeriana Moxostoma anisurum A losa chrysochloris 1971 1987 1977 1981 1982 1983 1988 1974 1975 1976 1978 1976 1978 Silver redhorse Skipjack herring 1947 1950 1951 1954 1955 1956 1957 1972 1973 1954 1957 1950 1954 1957 1958 1959 1971 1952 1970 1972 1973 1974 1975 1976 1977 1980 1956 1970 1970 1972 1973 1974 1975 1976 1977 1983 1984 1976 1977 1980 1982 1983 1987 1989 1990 1997 53

Appendix 1. (Continued)

Common Name Scientific Name TRM 471.7-478 TRM 483.6-487.5 TRM 489.6-495 HiRM 1.2-3.5 TRM 505.4-508 TRM 524.6 Skipjack herring (Continued)

Smallmouth bass Smallmouth buffalo Alosa chrysochloris Micropterus dolomieu Ictiobus bubalus 1974 1975 1977 1982 1983 1984 1985 1987 1989 1995 1999*

1976 1977 1980 1990 1991 1992 1993 1995 1997 1999*

1947 1950 1951 1954 1955 1956 1957 1970 1971 1972 1973 1974 1975 1976 1977 1979 1980 1981 1982 1983 1985 1986 1989 1990 1992 1985 1987 1989 1990 1991 1992 1997 1950 1954 1957 1959 1950 1954 1957 1958 1959 1970 1971 1991 1992 1993 1995 1997 1979 1970 1971 1972 1973 1975 1976 1977 1978 1979 1983 1986 1952 1971 1972 1973 1974 1975 1977 1979 1981 1982 1983 1985 1986 1956 1970 1991 1976 1977 1980 1982 1983 1985 1986 1988 1989 1992 1993 1995 1997 54

Appendix 1. (Continued)

Common Name Scientific Name TRM 471.7-478 TRM 483.6-487.5 TRM 489.6-495 HiRM 1.2-3.5 TRM 505.4-508 TRM 524.6 Smallmouth buffalo Ictiobus bubalus (Continued)

Smallmouth redhorse Spotfin shiner Moxostoma breviceps Cyprinella spiloptera 1982 1983 1984 1985 1986 1987 1988 1989 1990 1993 1997 1999*

1971 1949 1973 1975 1976 1977 1978 1979 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1995 1997 1999*

1970 1973 1977 1974 1975 1976 1977 1978 1981 1982 1983 1984 1985 1986 1987 1990 1991 1992 1993 1995 1997 1974 1977 1986 1987 1988 1978 1983 1987 1988 1992 55

Appendix 1. (Continued)

Common Name Scientific Name TRM 471.7-478 TRM 483.6-487.5 TRM 489.6-495 HiRM 1.2-3.5 TRM 505.4-508 TRM 524.6 Spotted bass Spotted gar Micropterus punctulatus Lepisosteus oculatus 1947 1950 1954 1955 1956 1957 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1995 1997 1999*

1970 1973 1974 1977 1979 1981 1983 1986 1950 1954 1957 1958 1959 1970 1971 1958 1971 1952 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1982 1983 1984 1985 1986 1988 1990 1991 1992 1993 1995 1997 1956 1970 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1982 1983 1984 1986 1987 1988 1990 1991 1992 1993 1995 1976 1979 1982 1983 1984 1988 1989 1990 1991 1976 1977 1979 1980 1983 1985 1986 1989 1971 1978 1981 1983 1984 1987 1989 1990 1975 1979 1981 1983 1984 1986 1989 1991 56

Appendix 1. (Continued)

Common Name Scientific Name TRM 471.7-478 TRM 483.6-487.5 TRM 489.6-495 HiRM 1.2-3.5 TRM 505.4-508 TRM 524.6 Spotted gar Lepisosteus oculatus 1987 1991 1993 1990 (Continued) 1988 1989 1990 1991 1995 1997 1999*

1993 1997 1995 1997 1992 1995 1997 Spotted sucker Steelcolor shiner Minytrema melanops Cyprinella whipplei 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1986 1988 1990 1991 1992 1993 1995 1997 1999*

1976 1986 1987 1988 1992 1993 1995 1999*

1959 1971 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1987 1988 1990 1991 1993 1970 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1995 1997 1976 1977 1978 1979 1980 1982 1983 1984 1986 1988 1989 1990 1991 1992 1993 1995 1997 1976 1995 57

Appendix 1. (Continued)

Common Name Scientific Name TRM 471.7-478 TRM 483.6-487.5 TRM 489.6-495 HiRM 1.2-3.5 TRM 505.4-508 TRM 524.6 Striped bass Striped shiner Stripetail darter Threadfin shad Morone saxatilis Luxilus crysocephalus Etheostoma kennicotti Dorosoma petenense 1997 1999*

1977 1984 1990 1990 1979 1982 1974 1975 1977 1979 1980 1983 1984 1992 1989 1990 1976 1977 1980 1985 1997 1999*

1950 1951 1954 1955 1957 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1950 1954 1957 1958 1959 1970 1952 1970 1971 1972 1973 1974 1975 1976 1979 1980 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1956 1970 1970 1971 1972 1973 1974 1975 1976 1977 1979 1980 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1976 1977 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1995 1997 58

Appendix 1. (Continued)

Common Name Scientific Name TRM 471.7-478 TRM 483.6-487.5 TRM 489.6-495 HiRM 1.2-3.5 TRM 505.4-508 TRM 524.6 Threadfin shad (Continued)

Warmouth Dorosomapetenense Lepomis gulosus 1985 1986 1987 1988 1989 1990 1991 1992 1993 1995 1997 1999*

1949 1950 1951 1954 1956 1957 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1992 1993 1995 1997 1992 1993 1995 1997 1950 1954 1957 1958 1959 1971 1952 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1995 1956 1970 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1995 1997 1976 1977 1978 1980 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1995 1997 59

Appendix 1. (Continued)

Common Name Scientific Name TRM 471.7-478 TRM 483.6-487.5 TRM 489.6-495 HiRM 1.2-3.5 TRM 505.4-508 TRM 524.6 Warmouth Lepomis gulosus (Continued)

Western mosquitofish Gambusia affinis White bass Morone chrysops 1990 1991 1992 1993 1995 1997 1999*

1976 1984 1986 1987 1989 1990 1991 1992 1993 1995 1997 1999*

1949 1950 1951 1954 1955 1956 1957 1970 1972 1973 1974 1978 1997 1982 1985 1986 1987 1988 1989 1990 1991 1992 1993 1995 1997 1972 1973 1976 1980 1981 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1995 1997 1970 1971 1973 1974 1976 1977 1983 1988 1989 1990 1991 1976 1977 1979 1980 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1995 1997 1976 1977 1979 1980 1986 1987 1989 1990 1991 1997 1954 1957 1958 1959 1970 1971 1952 1970 1973 1974 1975 1985 1986 1956 1970 60

Appendix 1. (Continued)

Common Name Scientific Name TRM 471.7-478 TRM 483.6-487.5 TRM 489.6-495 HiRM 1.2-3.5 TRM 505.4-508 TRM 524.6 White bass (Continued)

Morone chrysops White crappie Pomoxis annularis 1982 1984 1986 1987 1988 1989 1990 1992 1993 1997 1999*

1947 1949 1950 1951 1954 1957 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1954 1957 1958 1959 1970 1971 1952 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1990 1992 1993 1995 1997 1956 1970 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1990 1991 1993 1995 1997 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1995 1997 61

Appendix 1. (Continued)

Common Name Scientific Name TRM 471.7-478 TRM 483.6-487.5 TRM 489.6-495 HiRM 1.2-3.5 TRM 505.4-508 TRM 524.6 White crappie (Continued)

White sucker Whitetail shiner Yellow bass Yellow bullhead Pomoxis annularis Catostomus commersonii Cyprinella galactura Morone mississippiensis Ameiurus natalis 1991 1993 1997 1999*

1971 1971 1971 1972 1973 1974 1975 1976 1977 1978 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1995 1997 1999*

1975 1980 1981 1984 1986 1987 1988 1977 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1995 1997 1978 1979 1980 1981 1982 1983 1984 1977 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1995 1997 1978 1979 1980 1981 1982 1983 1984 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1995 1997 1983 1984 1985 1986 1988 1989 1990 62

Appendix 1. (Continued)

Common Name Scientific Name TRM 471.7-478 TRM 483.6-487.5 TRM 489.6-495 HiRM 1.2-3.5 TRM 505.4-508 TRM 524.6 Yellow bullhead (Continued)

Yellow perch Ameiurus natalis Percaflavescens 1989 1990 1992 1993 1995 1999*

1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1995 1997 1999*

1985 1986 1987 1988 1989 1990 1991 1970 1971 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1995 1997 1970 1985 1986 1987 1988 1989 1990 1991 1992 1995 1997 1970 1972 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1995 1997 1991 1992 1993 1995 63