ML20079N322
| ML20079N322 | |
| Person / Time | |
|---|---|
| Site: | Monticello  |
| Issue date: | 12/31/1989 |
| From: | NORTHERN STATES POWER CO. |
| To: | |
| References | |
| RTR-NUREG-1437 AR, NUDOCS 9111110159 | |
| Download: ML20079N322 (88) | |
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FSP Environmental Monitoring and Ecolog' cal Studies Program for the Monticello huclear Generating Plant
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CONTENTS PAGE INTRODUCTION..........................................
1 ECOLOGICAL STUDIES Electrofishing Survey..............................
1-54 Seining Study......................................
55-80 Appendix A.........................................
81-82
8 7
INTRODUCTION This is the twenty-second consecutive report (nineteenth operational) summarizing environmental monitoring activities for the Monticello Nuclear Generating Plant (MNGP).
In 1938 only the fishery monitoring studies were conducted.
Because the Mississippi river near Monticello is a large, turbulent stream-with a-boulder substrate, many conventional fish _ sampling methods are impractical.
Two techniques that have worked well for capturing specimens are electrofishing and seining.
Large-fishes are efficiently sampled by electrofishing, and small species and young fishes are captured by seining studies.
The objective of the electrofishing and seining studies was to assess the relative abundance and seasonal distribution of fish in response to the plant discharge plume.
-Data collected in 1989 were summarized and compared to previous years data to evaluate any trends in fish abundance during
-the study period.
i i
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i MONTICELLO NUCLEAR GENERATING PLANT ENVIRONMENTAL MONITORING PROGRAM 1989 ANNUAL REPORT A
SUMMARY
OF THE 1988 MONTICELLO ELECTROFISHING SURVEY l
L l
Prepared by:
D. J. Orr Environmental and Regulatory Activities Department Northern States Power Company 1
f 9
A
SUMMARY
OF THE 1989 MONTICELLO ELECTROFISHING SURVEY IFTRODUCTION A fishery survey designed to assess relative abundance and seasonal distribution of fish in response to Monticello Nuclear Generating Plant's (MNGP) thermal discharge was conducted in 1989.
Sampling procedures and equipment used in 1989 were much the same as in all previous studies ensuring a similar set of relative data indices for yearly comparison.
Study areas (Figure 1) were sampled eight times between April 29 and October 24, 1989.
Sector 1 encompasses an area of 21.5 ha and extends from the discharge structure upstream 1.7 km to the top of Cedar Island.
Sector 2 extends 1.5 km downstream from the discharge structure to the, bottom of Boy Scout Rapids and includes an area of 21.7 ha.
The thermal plume generally covers
^
less than one-half of the area of Sector 2 throughout most of the sampling period.
Percent composition, catch-per-unit-effort, condition factors, and length.-weight relationships were determined for predominate species in each sector.
Comparisons of 1989 data with 1968 l
through 1988 data were also made.
MATERIALS AND METHODS l
I Equipment, sampling frequency, technique, and data computation were similar to the 1976-1988 studies.
Sampling was conducted with pulsed, direct-current electrofishing equipment (Figure 2).
I A five-meter, flat bottom boat equipped with a railing, one anode l
r.. ten cathodes was utilized.
The power source was a 230-volt l
AC revolving field portable alternator.
Current was maintained 3
in a 240-volt DC mode at five amperes at a rate of 60 pulses per second with a Smith-Root type VI-A Electrofisher.
Paired shocking runs were conducted along opposing shorelines as described in the 1975 report.
Stunned fish were captured with one-inch mesh landing nets equipped with eight-foot fiberglass handles, and placed in holding basins until completion of each sampling runs Elapsed shocking time was recorded for each run by a clock, which only tallied the seconds that the electrical field was energized.
Fish were measured to the nearest millimeter and weighed to the nearest ~10 grams.
Species catch per-unit effort (cpue) was computed for both i
sectors on each sample date.
catch was determined for number (fish /hr.) and weight (kg/hr.) by dividing the total number and weight of fish collected per area by the elapsed shocking time for the area.
Fish were grouped into twenty-millimeter intervals, and mean total lengths and weights were computed for each group.
Using th'ese averages, condition factors were computed for the most abundant species with tne formula:
K = W x105 3
L where K is the condition factor, W is weight in grams, and L is total length in millimeters.
Individuul fish measurements were.used to compute length-weight relationships for the six dominant species.
Data from both sectors were combined in this analysis.
As with condition factors, all data were grouped and not segregatad by sex.
Metric measuremants were transformed into logarithms, and simple linear 4
regressions were computed.
Length-weight formulas used to
' describe the data are presented in the following form:
log W = log a + b log L, where W is the weight in grams, L is the total length in millimeters, a is the Y axis intercept, and b is the slope of the length-weight regression line.
RESULTS A total of 1924 fish was collected in the 1989 survey, 1044 from Sector 1 and 880 from Sector 2.
Common and scientific names of species collected in the 1976 through 1989 surveys are presented in Table 1.
Twelve species from six families were collected in 1989.
In all, 26 species from nine families have been identified during the MNGP electrofishing studies.
Percent contribution to total catch, by number, was computed for each major species from 1968 through 1989 (Table 2).
Figures 3 through 5 depict the percent contribution to total catch of the fish community in this study area.
Monthly cpue statistics were computed by number (fish /hr.) and weight (kg/hr. )
for each I
species (Tables 3 and 4).
Fish-per-hour indices are also presented in graphic form as a visual comparison of seasonal abundance for the seven major species in this study area (Figures 6 through 12).
Comparisons of annuti cpue are presented as fish /hr. and kg/hr. in Tables 5 and 6.
Average annual cpue for the study period is compared graphically in Figure 13 by species and total fish /hr.
I Length frequency distributions, in twenty-millimeter intervals, are presented in Figures 14 through 20 for the predominant species.
Condition factors of selected species were determined 5
using - the twenty-millimeter intervals and are given in Table 7.
A comparison of mean annual fish condition is presented in Table 8.
Table 9 lists the length-weight relationships computed for the predominant species.
Data on river flow are included in this section in 1989 because the remainder of the physical and-chemical monitoring has been discontinued, as per MPCA letter dated 17 March 1988.
Table 10 lists average monthly flows at MNGp from 1973 through 1989 and averages for the study period both by month and year.
Table 11 summarizes the weekly averages of the water monitoring parameters including river flow, plant intake flow, river' temperature, and discharge canal temperature and also lists the weekly average river flows for the period 1975 to 1989.
In Figure 21 the 1989 weekly average flows are compared to the average flows for the study period.
Weekly _ averages for 1987 and 1988 are included on the graph to illustrate the extent of the low river flow conditions the past three years.
DISCUSSION i
In 1989, Mississippi River flow war below the average for most of the_ year.
In the past three years the mean weekly flow has exceeded the average in only fifteen of.the past 156 weeks (Figure _21).-
The lowest-weekly average-in 1989 was 1429 cfs during the week of August 13 (Table 11).
The - monthly average flows were-below average every month except April and the December-1989 flow. as the third lowest recorded (Table 10) indicating, along with the lack of snow cover, that at year end the drought was not over.
Low river flows necessitate minor adjustments in the electrofish-ing procedures.- The low water makes shocking through the riffle 6
areas difficult and restricts access to some portions of the study area.
Twelve species fre.4 six families were collected and identified in 1989 (Table 1).
The dominant species, in descending order of abundance, were:
shorthead redhorse, silver redhorse, carp, northern hogaucker, smallmouth bass and channel catfish.
E Collectively, these species comprised 97.5 percent of the total catch (Figure 3).
Miscellaneous species (each less than one percent of the total),
in descending order of abundance, were:
white sucker and walleye, northern pike, bigmouth buffalo and black bullhead, and rock bass.
Figures 4 and 5 display the species contribution in Sectors 1 and 2, respectively.
The two figures also show the five predominant species have the same dominance ranking in both sectors.
The annual average of Sector 1 and 2 cpue is displayed in Figure 13.
Total average fish /hr. increased steadily from 201.2 in 1976 e
to 710.2 in 1983 with a mean of 475.2.
Since 1984 average cpue has remained fairly stable compared to the first eight years of the study.
Total catch per effort was similar in 1988 (460.8) and 1989 (469.8) and was close to the study period average.
Individual species catch varies annually but the total cpue seems most dependent upon the catch of shorthead and silver redhorse.
Carp The percent contribution of carp to the total catch (Table 2) increased from 14.4 to 16.4 percent in Sector 1 and decreased from 14.2 to 10.8 percent in Sector 2 compared to 1988 data.
Overall, the contribution of carp decreased slightly from 14.3 to 13.9 percent for the same period.
The abundance of carp, the third most common fish in this reach of river, was above the study average for cpue in both sectors in 1989 (Table 5) as was 7
i tne case in 1988.
Catch per unit effort increased in Sector 1 and decreased in Sector 2 in 1989 compared to 1988.
Sector 1 mean annual carp abundance increased from 53.6 fish /hr. to 66.0 fish /hr.
from 1988 to 1989.
Mean annual abundance in Sector 2 decreased from 78.0 fish /hr.
to 58.1 fish /hr.
for that period (Table 5).
b an condition factors for carp were 1.22 and 1.24 for Sectors 1 and 2, respectively (Tables 7 and 8) indicating little difference between upstream and downstream fish.
Compared to previous data, condition factors are slightly lower than the historical mean values.
The length-weight relationship for carp in 1989 was:
log W-= -4.374 + 2.798 log L.
This relationship compares well with previous MNGP data.
Similar regressions from other North American studies of carp cited in Carlander'(1969) ranged fromt log W = -3.982 + 2.664 log L to log W = -6.226 + 3.477 log L.
Shorthead redhorse For the first time since 1984 the percent contributio4 af short-head redhorse to the total catch was lasc in Sector 1 (37.9) than in Sector 2 (42.5) (Table 3).
The 1988 percent contr.bution was 40.4 and 38.9 in Sectors 1 and 2, respectively.
Mesn annual abundance data (Table 5) increased in Sector 1 from 150.7 fish /hr. in 1988 to 152.1 fish /hr. in 1989 and increa7ed in Sector 2 from 213.6 to 228.9 fish /hr. for the same period.
Both cpue values are slightly below the long term average but follow 8
the trend of higher cpve in the downstream sector.
On only two occasions in 1989 (Figure 7) was shorthead redhorse catch greater in Sector 1 than Sector 2.
Previous annual reports have noted most of the shorthead redhorse caught each year are similar in size and range between 400 and 470 millimeters (Figure 15).
In past years the percent of fish in this range has been between 80 and 90 percent of the popula-tion.
In 1989 this group contributed only 54.0 percent of the population.
Figure 15 shows three distinct peaks in the size distribution.
The increase in numbers of smaller fish indicate better survival of young redhorse the past two or three years.
This is a more balanced shorthead redhorse population st'.ucture than we have observed in our electrofishing data in recent ears.
Mean annual condition factor for shorthead redhorse was 1.05 and 1.06 for Sectors 1 and 2,
respectively.
These values are down slightiv from the 1988 number of 1.13 for both sectors but are close to the average of 1.07 in both sectors for tha study period.
The abundance of young fish in 1989 likely contributed to the slightly lower condition factor.
The length-weight relationship for shorthead redhorue in 1989 was:
log W = -4.785 + 2.923 log L.
T'11s regression compares well with those cited in Carlander (1969) which range from:
log W = -3.20 + 2.83 log L to '
log W = -4.042 + 3.021 log L.
9
i Silver redhorse The contribution to total catch by silver redhorse increased in both sectors in 1989 and was slightly above the study period average (Table 2).
Sector 1 vent from 23.0 to 25.2 percent with a similar rise of 21.4 to 25.9 percent in Sector 2, when compared to 1988 data.
Mean annual abundance also in reased in both sectors this past season from the previous year but was still slightly below the average in both sectors.
Sector 1 abundance climbed from 85.8 fish /hr.
in 1988 to 101.0 fish /hr.
in 1989,
-while abundance in Sector 2 increased from 117.3 fish /hr. to 139.5 fish /hr. for that period.
The 1989 rise in abundance in both sectors is.the first time since the early 1980's that silver redhorse catch increased from the preceding fear (Table 5).
Figure 15 shows a rather narrow size frequency distribution but is similar to previous data.
The distribution still appears to be moving up in size, as was noted in 1988, possibly indicating an aging population in decline.
The presence of the small peak in the 200 to 300 mm range indicates some spawning success the past couple of years, however, this group represents only about eight percent of the population.
Mean condition factors for Sectors 1 and 2 were 1.14 and 1.13, respectively, indicating little difference in the condition of silver redhorse above and below MNGP.
Condition factors changed very little in 1989 compared to the 1988 figures of 1.16 and 1.12 and are still slightly above the average of 1.11.
Silver redhorse had a length-weight relationship of:
-log W = -4.768 + 2.929 log L.
10
Carlander (1969) reported a similar formulat log W = -4.263 + 3.124 log L.
White sucker White sucker comprised 1.0 percent of the total catch in Sector 1 and 0.8 percent in Sector 2 in 1989.
Catch-per-unit-effort figures for Sector 1 were 3.8 fish /hr. and 4.3 fish /hr. in Sector 2 (Table 3).
The difference in cpue figures between sectors has been small thrnughout the study period.
White sucker epue values peaked in 3982 at 31.6 fish /hr. in both sectors and has been on the decline since.
The abundance indices for white sucker rank it below smallmouth bass, walleyo, and channel catfish in Sector 1.
Abundance increased in Sector 2 ranking white suckers below smallmouth bass but above walleye and channel catfish in 1989, one intw:esting note is the correlation between the decline in white sucker catch and the increase in abundance of northern hogsucker since it first appeared in 1978 (Figure 13) indicating the possibility of some interspecific competition contributing to the trends.
Mean condition factors for white sucker increased in both sectors in 1989 with 1.17 and 1.18 in Sectors 1 and 2, respectively.
Values for 1987 were 1.11 and 1.04 for the two sectors.
The small sample size obtained this year make the condition factor
~
and length-weight relationship computations somewhat unreliable.
The length-weight regression for white sucker in 1380 wast log W = -4.800 + 2.945 log L.
I 11
i The range of equations from other Horth American studiec reported by carlander (1969) wast log W = -2.822 + 2.230 log L to log W = -5.395 + 3.223 log L.
Smallmouth bass smallmouth bass composed 6.9 percent of the catch in Sector 1 and 8.3 percent in Sector 2 in 1989 comparad with 11.3 and 14.0 percent for the respect.No sectors in 1988.
The mean cpue data for Sectors 1 and 2 were 27.6 and 44.7, respectively.
These figures represent a decrease in both sectors from the peak levels observed in 1989.
Catch per effort remains above the long-term average in both sectors.
The length frequency distribution for smallmouth bass depicted in Figure 18 indicates a young expanding population with individuals from the past three year classes represented but no obviously dominant year class.
l The high smallmouth bass abundance normally observed in the late season electrofishing trips were not present in 1989.
Smallmouth bass yoy are attracted to the warm-water plume from MNGP and these fish are captured during the fall samplings.
In 1989 the l
Plant was off-line for refueling from early August through November so there was no warm water to attract these fish once i
the river began to cool.
The condition is illustrated in Figure i
10 which shows the dramatic drop in cpne during October from August and September numbers.
Mean annual condition factor for smallmouth bass was 1.39 in both Sectors 1 and 2.
These figures are similar to, although slightly I
below the mean value for the study period (Table 8).
One reason for this condition is likely the fact that the 1989 sample 12
contains only a few mature fishi instead it is composed predominately of fish one or two years of age.
The length-weight relationship for smallmouth bass want log W = -4.787 + 2.961 log L.
This formula falls within the range qited by Carlander (1969) which vast log W = -4.177 + 2.701 log L to log W n -5.841 + 3.372 log L.
Elleva The contribution of walleye to the overall catch in 1989 dec. teased in Sector 1 (1.2 percent from 2.5 percent) and in Sector 2 (0.4 percent from 1.9 percent) compared to 1988 data.
Abundance figures were 5.0 fish /hr. and 2.4 fish /hr. for Sectors 1 and 2,
respectively.
Percant contribution and abundance of walleye in Sector 1 are above - average but both parameters are slightly below the Sector 2 averages.
The length-weight equation calculated for walleye in 1989 was:
Log W = -6.321 + 3.481 Log L which compares closely with the relationship for Wisconsin valleyes cited in Becker 1983 which was:
Log W = -5.359 + 3.216 Log L.
13
l l
Northern hocsugiqr The contribution to total catch by northern hogsucker increased in both sectors.
Sector 1 contribution rose from 5.3 percent in 1988 to 9.0 percent in 1989.
In Sector 2
the percent contribution increased from 5.9 percent in 1988 to 10.2 percent in 1989.
In 1989 northern hogsucker were collected at the rate of 36.1 fish /hr. in Sector 1 and 55.1 fish /hr. in Sector 2 compared to 19.8 fish /hr. and 32.6 fish /hr. in those sectors in 1988.
The population of northern hognucker in this area appears to have stabilized in both sectors following the rapid expansion after they were first observed in 1978.
Sector 1 abundance has fluctuated slightly since 1981 but rose in 1989 to the highest abundance recorded for the upstream sector.
Northern hogsucker abundance expanded more rapidly in Sector 2 where abundance peaked at five times the fish /hr. present in Sector 1.
In 1985 the population of northern hogaucker exploded in the downstream sector peaking at over 110 fish /hr. but declined annually for the three succeeding years.
The Sector 2 abundance is now back in the range observed for several years prior to 1985.
Mean annual condition factor in 1989 for Sector 1 was 1.14 compared to 1.20 in 1988; Sector 2 dropped from 1.24 to 1.18 between 1988 and 1909.
Both sectors are slightly below the study averages.
The 1989 length-weight regression computed for northern hogsucker was:
log W = ~5.298 + 3.147 leg L.
l 14
r The range reported in Carlander (1977) wast log W = -4.697 + 2.902 log L to log W = -4.960 + 2.980 log L.
l Miscellaneous scecies In 1989 the percent contribution of miscellaneous species to the catch increased in Sector 1 compared to 1988 data.
The numbers rose from 2.1 percent to 2.4 percent but declined in Sector 2 from 3.5 to 1.1 percent.
The catch rates for this group of species were 9.6 fish /hr. upstream and 5.4 fish /hr. downstream of MNGP in 1989.
Sector 3 abundance is slightly above average while in Sector 2 the abundance was below average.
Five species comprised the miscellaneous category in 1989.
These species and the numbers coller:ted were channel catfish (20),
northern pike (4), black bullhead (4), bigmouth buffalo (4), and rock bass (2).
Species from this group were more abundant in Sector 1.
Rock bass and northern pike were caught only in Sector 1 while black bullhead, and bigmouth buffalo were observed exclusively in Sector 2.
Channel catfish were found in both sectors but were more abundant in Sector 1.
Species which have been collected in previous electrofishing surveys but not caught in 1989 varet bowfin, cisco, muskellunge, greater redhorse, yellow and brown bullhead, burbot, largemouth bass, bluegill, black end white crappie, pumpkinseed, green sunfish, and yellow perch.
As-with other forms of fish sampling gear (e.g. trap net, gill not, and seine), electrofishing is size selective.
The species which comprise MNGP's miscellaneous category may be more abundant than is suggested by the relative cpus data.
l l
15
StmMARY l
1.
The 1989 electrofishing survey was conducted with a pulsed DC unit at approximately four week intervals starting April 29 and ending October 24, ?.989.
Energized shocking time wes used to calculate cata:h-per-unit-effort data.
2.
A total of 1924 fish was collected comprised of twelve species from six families.
Twenty-six species from nine families have been identified from the study area since 1976.
3.
Secter 1 had the following dominance rankings shorthead
- redhorse, silver redhorse,
- carp, northern hogsucker, smallmouth bass, channel catfish,
- walleye, white sucker, northern pike, rock bass and biguouth buffalo, and black bullhead.
4.
Sactor 2 dominance ranking was shorthead redhorse, silver radhorse, carp, northern hogsucker, smallmouth bass, white
- sucker, walleye, channel catfish, black bullhead, and biguouth butfalo.
5.
Catch-per-unit-effort values increased in Sector 1 but were down in sector 2 in 1989 compared to 1988 and are near the average catch rates for the study period.
Abundance indices of smallmouth bass decreased to near average in both sectors from previously high numbers in 1988.
Abundance of all Moxostong species increased in both sectors in 1989.
Only walleye. decreased in abundance in both sectors in 1989 from above average highs in 1988.
6.
Condition factors were computed for six species.
Compardson of these data showed good correspondence between sectors for 16
all
- species, condition factors for
- carp, shorthead redhorse, smallmouth bass, and northern hogaucker decreased this past year in both sectors while the indices for white sucker increased in both sectors.
The condition factor for silver redhorse increased in the downstream secter and decreased in the upstream sector in 1989.
7.
Length-weight relationships computed for selected species compared well with the regressions reported by carlander (1969 and 1977).
4 4
l l
17
l LITERATURE CITED
- Decker, G. W.
1983.
Fishes of Wisconsin.
Univ. of Wisconsin Press.
Hadison, WI.
Carlander, K.D.
1969.
Handbook of Freshwater Fisherv Bioloav, Volume 1,
752 p.
The Iowa State University Press,
- Ames, Iowa.
Carlander, K.D.
1977.
Handbook of Freshwater Fisherv Biolony, Volume 2,
752 p.
The Iowa State University Press,
- Ames, Iowa.
- Scott, W.B.
and E.J.
Crossman.
1973.
Freshwater Fishes of Canada, Bull. 184 Fisheries Research Board of Canada, Ottawa.
966 p.
18
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Figure 6 1989 MONTICELLO ELECTROFlSHING CPE (FISH /HR) CARP
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Figure 10 1989 MONTICELLO ELECTROFISHING CPE (FISH /HR) SMALLMOUTH BASS 90 O
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E SECTOR 1 o u d-O SECTOR 2 APR/29 MAY/25 JUNE /23 JULY /12 AUG/17 SLPl/06 OCT/OG OCT/24 DATE
Figure 11 1989 MONTICELLO ELECTROFISHING CPE (FISH /HR) WALLEYE fil
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E"2 MAY/25 JUl4E/23 JULY /12 AUG/17 SEPT /06 OCT/06 OCT/24 DATE
Figure 12 1989 MONTICELLO ELECTROFISHING CPE (FISH /HR) NORTHERN HOGSUCKER 12 0 -
e.
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l APR/29 MAY/25 JUNE /23 JULY /12 AUG/17 SEPT /06 OCT/06 OCT/24 DATE L
I I
l l
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x 9
8 9
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8 8
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Figure 14 1989 MONTICELLO ELECTROFISHING LENGTH FREQUENCY CARP 45 40-n 35-30-0 25-e5 a
8 20-g g
n T
s 15-10-o
[f, Legend 5-EER SECTOR 1 E
i O SECTOR 2
~
,H _ _
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0-250 70 350 400 450 500 550 600 650 700 750 IJ.NGTil mm
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i Figure 16 1989 MONTICELLO ELECTROFISHING LENGTH FREOUENCY SILVER REDHORSE 90 80-h 70-
'I 60-J f
o O 50-a b
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=
M 40-u.
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TER SECTOR 1 e
o stcroa 2 h'
E' [5 N) l-l E
0-150 200 250 300 350 400 450 500 550 600 LENGTH mm
Figure 17 1989 MONTICELLO ELECTROFISHING LENGTH FREQUENCY WHITE SUCKER l.
3.5 i.
3-7.
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i EM SECTOR 1 o.5 -
I O SECTOR 2 15 0 200 250 300 350 400 450 LENGTH mm
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1989 MONTICELLO ELECTROFISHING LENGTH FREQUENCY NOPTHERN HOGSUCKER I
25 i
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h Im SECTOR 1 t;
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o 1$0 2b0 2b0 3b0 350 4b0 450 Sb0 LENGTil mm
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Figure 21 Weekly Average Mississippi River Flow CFS (Thousands) 20 Average C 1987 8
15 M 1989 3
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4 Table 1.
(Continued)
}ptsir,3 3 g 1978 g jogg g g g g g g ggg o
Pwpkinseed x
Lf2T.'.!.1 h Green smfish n
(320m,,ig ey W lIus Walleye x
1 A
x x
a x
x x
x x
a Stitostedita vitremi Yellow perch n
h hvg 42
Table 2, 1968 1989 Monticetto Electrof f shing Percent of Total Catch by Number.
Shorthend-Silver White smallmouth Northern
[teg ret orse ret orse igg,igt bass Walleye bMsueler h
Sector i 1968 50.7 34.5 4.4 2.7 1.5 4.8 1.4 1969 29.4 48.6 7.4 4.5 1.8 2.0 6.3 1971 25.3 36.9 9.1 13.1 7.6 7.1 0.9 1972 45.1 26.1 9.1 4.1 7.0 1.1 7.5 1973 39.9 34.8 13.0 4.9 2.0 0.7 4.7 1974 44.3 20.3 16.7 9.2 1.5 0.1 7.9 1975
$3.5 27.0 9.3 3.7 0.9 0.5 5.1 1976 41.0 36.4 12.3 3.5 3.4 1.4 2.0 1977 19.6 40.3 12.7 3.4 20.4 0.8 0.3 2.5 1973 15.4 32.2 26.4 5.0 15.4 0.5 0.2 4.9 1979 15.2 43.4 29.5 5.5 4.3 0.2 0.1 2.0 1980 11.4 51.0 26.2 4.8 1.6 0.6 0.9 3.5 1981 9.7 34.9 38.1 5.2 6.6 0.7 3.1 1.7 1982 9.8 41.7 31.9 6.4 5.0 1.3 2.0 2.0 1983 10.2 38.6 38.1 5.3 2.5 0.6 2.1 2.6 1984 8.4 41.7 39.9 4.1 1.4 0.7 2.2 2.4 1985 7.9 48.6 33.5 3.3 1.1 0.5 4.2 0.8 1986 3.0 54.8 30.6 2.4 1.6 0.3 6.2 1.1 1987 6.8 47.8 34,8 0.9 1.8 1.5 5.5 0.9 1988 14.4 40.4 23.0 1.0 11.3 2.5 5.3 2.1 1989 16.4 37.9 25.2 1.0 6.9 1.2 9.0 2.4 Average 22.7 38.4 21.6 5.1 4.8 1.3 2.1 3.3 Sector 2
'1968 34.3 58.9 2.9 3.0 0.4 0.3 0.3 1969 17.3 65.1 9.6 4.8 2.0 1.2 0.4 1971 27.2 35.9 7.8 6.3 12.6 6.8 3.4 1972 38.4 33.4 8.2 3.3 5.9 2.0 8.8 1973 31.2 41.3 11.5 4.0 2.9 1.2 7.9 1974 47.0 22.6 15.2 6.4 0.9 0.6 6,4 1975 40.8 37.6 10.8 1.9 3.8 1.3 3.8 1976 32.4 40.1 12.6 1.6 9.3 1.5 2.5 1977 21.2 33.1 15.3 2.1 22.8 1.0 0.3 4.3 1978 11.3 30.3 31.3' 3.8 16.5 0.6 0.1 6.1 1979 9.4 49.7 26.9 4.0 5.3 0.3 0.1 4.4 1980 8.7 50.8 29.2 2.9 4.8 0.3 1.1 2.2 1981 5.2 41.8 37.1 3.3 5.7 1.1 5.1 0.7 1982 5.2 45.4 33.0 4.5 3.2 0.4 6.1 2.3 1983 6.2
-46.8 33.7 2.4 3.8 1.2 5.3 0.6 1984 5.7 46.1 37.8 2.9 0.8 0.3 5.4 1.4 1985 6.2 41.8 29.4 2.5 2.1 0.4 16.6 1.0 1986 2.3 47.2 28.7 2.3 2.4 0.1 16.4 0.6 1987 7.9 44.6 29.4 0.7 7.9 2.6 5.7 1.2 1988 14.1 38.9 21.4 0.2 14.0 1.9 5.9 3.5 1989 10.8 42.5 25.9 0.8 8.3 0.4 10.2 1.1 Average 18.2 42.7 21.2 3.4 5.8 1.1 5.7 3.2 43
.~. =.
_~
... - ~.
Table 3.
1989 Monticello Electrof f shing catch per Unit Ef fort by NLrter (Fish /hr.).
Shorthead
$llver White Smallmouth horthern
[8.eg rt@ 0 rte tr$0. rte suc ker bass Valleye boosuc k er h
J.2111 Sectee 1 4/29 2.6 13.6 209.6 0.0 0.0 0.0 5.2 2.6 253.6 5/25 101.5 89.6 41.8 11.9 14.9 9.0 35.8 11.9 316.4 6/ 23 81.4 133.2 1 03.6 0.0 34.5 7.4 39.5 7.4 407.0 7/12 84.0 81.2 75.4 2.9 23.2 0.0 49.3 14.5 330.5 8/17 85.0 120.5 67.3 7.1 28.3 0.0 46.1 21.3 3 75.6 9/6 107.6 1 95.0 2 08.4 0.0 74.0 3.4 40.3 13.4 642.1 10/6
?.3.0 292.3 50.0
- 7. 7 34.6 11.5 42.3 0.0 461.4 10/24 4= 4 351.8 20.5-3.4 20.5 10.2 37.6 6.8 495.2 Sectee 2 4/29
- 17.8 186.4 328.5 4.4 48.8 0.0 44.4 4.4 6 34.7 5/ 25 121.t' 1 71.2 110.4 7.6 45.7 0.0 49.5 11.4 517.6 6/23 57.1 220.4 155.1 12.2 28.6 0.0 49.0 4.1 526.5 7/12 61.8 52.9 66.2 0.0 22.0 0.0 13.2 0.0 216.1 8/17 66.4
.199.3 66.4 0.0 66.4 6.0 60.4 0.0 464.9 9/6 64.9 278.9 285.4 0.0 84.3 0.0 103.8 19.4 836.7 10/6 23.6 532.9 65.1 0.0 53.3 11.8 77.0 5.9 769.6 10/24 32.2 296.4 32.3 5.4 26.9 5.4 70.1 0.0 468.7 44
e Table 4 1989 Monticello Electrof f shing Catch per Unit Eff ort in Weight (kg/hr.).
Shorthead
$1Lver White Smallmouth Northern gar 2 re@ orse tetgr3.2 3Ed.t.t bass
- Walley, boosucker h
133,g1 sector 1 4/29 6.9 37.4 272.8 0.0 0.0 0.0 3.8 7.8 328.7 5/ 25 1 63.5 69.6 51.9 5.9 2.1 1.6 20.3 12.4 327.3 6/23 119.0 74.6 95.9 0.0 4.6 0.7 19.6 6.8 321.2 7/12 124.4 64.4 75.0 2.2 3.8 0.0 24.0 15.3 3 09.1 8/17 127.4 82.2 66.9 4.1 6.'
O0 29.8 12.0 329,1
- 9/6 168.6 144.8 217.5 0.0 17.4 0.9 23.4 9.4 582.0 10/6 35.7 224.5 61.5 4.9 12.3 8.6 24.8 0.0 3 72.3 10/24 86.6 2 78.0 22.0 1.6 4.5 4.2 27.5 8.9 433.3 Sector 2 4/29 25.0 -
-191.1 443.5 4.8 20.7 0.0 25.9 0.8 '
711.8 5/25 152.3 63.8 121.3 0.7 10.8 0.0 25.1 4.3 3 78.3 6/23-
'74.7 145.8 172.5 3.1 -
3.9 0.0 32.4 5.1 437.5
- 7/12 83.2-38.3 78.2 0.0 2.6 0.0 8.2 0.0 210.5 8/17.
85.1 127.3 77.3 0.0 11.4 1.2 42.7 0.0 345.0 9/6 98.1 218.4 354.9
-G0
'23.4 0.0 56.6 44.0 795.4
.10/6' 28.2 348.1 81.8 0.0 10.1 3.1 28.6-6.1 506.0 10/24 48.9 2 75.2 38.8 1.9 9.0 1.5 42.7 0.0 418.0 o
t 45
Table 5.
1976 19'39 Monticello Electrofishine Catch per Unit Ef fort by Ntsnber (Fish /hr.).
Shorthend
$1Lver khite smallneuth Northern gg.r2 Mih.223 ggng sveket boss vetteye boasuck er h
I,qt.gl 5ector.1 1976 67.4 59.9 20.3 5.8 5.7 2.4 1.2 164.6 1977 61.3 126.1 39.7 10.5 63.6 2.4 8.9 312.6 1978 51.6 108.1 88.5 16.6 51.7 1.7 0.7 16.5 335.5 1979 49.3 140.9 95.8 17.9 13.9 0.5 0.3 6.4 3 25.0 1980 38.0 168.7 84.0 16.1 5.3 2.3 3.4 11.4 329.2 1981 44.8 167.5 1 73.2 25.1 31.1 3.3 14.3 7.6 466.9 1982 47.5 207.3 155.0 31.6 24.2 6.2 9.6 9.2 490.6 1983 45.1 179.2 170.5 24.4 11.4 2.8 9.3 12.4 455.1 1984 33.8 173.1 155.6 16.6 5.9 2.7 9.5 7.1 404.3 1985 34.0 218.0 148.1 14.4 4.7 2.3 17.8 3.3 442.6 1986 14.2 224.7 142.4 10.3 6.1 1.2 26.2 4.9 430.0 1987 21.1 148.8 108.5 2.7 5.5 4.7 17.2 7.4 315.9 1988 53.6 150.7 85.8 3.8 42,0 9.2 19.8 7.7 3 72.6 1989 66.0 152,1 101.0 3.8 27.6 5.0 36.1 9.6 401.2 Average 44.8 158.9 112.0 14.3 21.3 3.3 13.7 8.3 3 74.7 5ector.2 1976 77.0 95.2 29.9 3.8 22.2 3.5 6.0 237.6 1977 79.3 123.8 57.2 7.8 85.2 3.8 17.3 374.4 1978 67.7 181.7 187.6 23.0 99.0 3.3 0.8 36.5 599.6 1979 43.0 226.8 122.6 18.3 24.3 1.3 0.7 19.6 456.6 1980 49.4 293.2 164.5 15.5 29.4 2.1 7.1 16.6 5 77.8 1981 31.6 278.3 232.5 20.7 37.5 7.2 34.4 3.9 646.1 1982 38.1 330.2 238.4 31.6 23.9 2.7 43.7 16.2 724.8 1983 57.2 457.5 324.8 22.5 36.0 11.8 49.6 6.0 965.4 1984 38.4 300.4 259.5 19.9 5.4 2.0 35.9 7.5 678.0 1985 41.0 275.2 194.7 16.2 14.0 2.8 110.4 6.0 660.3 1986 12.2 281.3 155.8 11.0 12.8 0.6 87.6 2.4 563.7 1987 38.7 217.2 143.0 3.6 38.7 12.7 28.0 5.0 486.9 1980 78.0 213.6 117.3 1.1 76.9 10.5 32.6 19.1 549.1 1909 58.1 228.9 139.5 4.3 44.7 2.4 55.1 5.4 538.4 Average 50.7 250.9 169.1 14.2 39.3 4.8 40.5 12.0 575.6 l
l 46
]~L
. e J,-
,s-Table 6.
=1976 1989 Monticetto Electrof f shine Catch per Unit Ef fort by Weight (kg/hr.)..
Shorthead Sliver Wite
$meltmouth Northern 18.t]l redhorse re@orse AWid2.t bass Walleye hocsuc k er Mise.
.M.
Sector 1 1976 97.5 46.1--
23.3 4.2 1.6 0.6 1.7.
1 75.0 1977 103.6
~109.4 64.4 -
5.7 13.0 1.1 4.6 301.8 1978 74.8 70.2 47.2 6.0 90 0.3 3.9 211.4 1979 66.3 91.8 57.1 8.1 3.2 0.4 5.6 232.5 1980 57.0 114.8 58.8 9.3 -
1.8 0.4 0.7 4.2 -
247.0-1981
- 64.8 130.5 127.2 13.2 2.8 0.7 2.1 7.5 348.8
- 1982 -
63.4 168.2 110.6 19.0 3.6 1.4 3.6 8.5 378.3
-1983.
61.7 -
153.4 134.7 14.5 2.9 0.2-4.7 2.6 3 74. 7 1984--
49.1 154.2.
141.5 11.5 1.7 0.9 4.2 1.8 -
36t. 9 1985 42.3' 186.0 141.5' 10.9 1.5 1.2 8.2 4.4 3%.0 1986 20.6' 185.3 125.4' 7.4 1.0 0.7 17.0 9.3 366.7 1987 37.4 132.3-108.2 2.0 2.8 1.0 12.2 1.1 297.0 1988-92.9 137.0 105.2 2.3 6.8 2.3 11.9 4.2 362.6 1989 103.4 114.5
-112.7 2.2 5.9
_ 1. 5 20.9 9.7 371.1.
I Average.
66.8 128.1' 97.0 8.3 4.1 0.9 8.5 4.9 316.3 18E12r2 1976'-
75.2 89.0 -
34.4 2.9-4.5 1.4 --
1.4 208.4 1977 99.7 85.7
'61.9 11.7 15.4 2.1
- 2.5 279.2
~ 1978 -
86.0 -
106.2-60.4
- 7. 0 17.4 2.6 -
6.0 285.6-1979
.53.1 145.5 69.8 7.9 6.0 0.6 7.6 290.5 1980:
49.1.
196.9 80.2 9.2 9.6 0.9 2.0 4.2 352.1 1981s 38.7 206.1 158.6 13.9 8.6 1.9 9.0 5.0 -
441.8 1982 41.7 236.2.
189.0
- 16. 7 -
4.1' 1.4 14.8 9.6 513.5-1985 64.7 329.6 258.1 12.6 9.3~
- 6.3 24.3 2.0 -
706.9 1984 48.8 268.5
-241.2 13.3-1.4 0.4 18.3 10.1 602.0 1985 46.6 221.5 175.4 11.8 3.5 -
3.7 48.4 8.8 -
.519.7 1986.-
18.8 225.3 -
135.7-8.0 2.4 1.5 :
52.0 6.9 450.5
- 987 50.7 180.6 136.8 2.7 7.5
- 4.5 16.7
' 6.3 406.1 1988 107.9 165.0 136.3 1.0 -
12.0 2.4 19.9 7.9 -
452.4 1989 -
77.0-164.5
- 1 71.5 1.4 10.9 0.6 31.1 6.4
-463.4 Aversee 61.3 187.2 136.4 8.6 8.1 2.2
- 23J 6.1 426.6
-47
=
Table 7.
1959 Condition f actors for Sectors 1 and 2 by Length segnent.
Shorthend
$llver White Smeltpouth Northern M
redhorse r @ orse bass hogsvekee Wetteve 1
2 1
2 1
2 1
2 1
2 1
2 1-2 Length 80 99 100 119 120 139 1.49 1.82 140 159 1.45 1,62 0.59 160 179 0.97 0.98 1.51 1.22 180 199 1.12 1.38 1.31 1.46 200 219 1.25 1.36 1.37 1.40 1.21 0, 96 1.08 0.50 220 239.
1.11 1.04 1.20 1.06 1.20 1.30
- 1. 29 1.25 1.16 0.69 240 259 1.41 0.96 1.07 1.17 1.14 1.14 1.28 1.31 1.24 1.00 1.14 0.74 260 279 1.09 1.09 1.18 1.08 1.24
- 1. 23 1.14 1.10 230 299 1.09
- 1. 0'e 1.12 1.30 1.16 1.20 1.30 1.20 1.14 0.67 300 319 1.31 1.09 1 36 1.09 1.27 1.40 1.24 1.20 1.15 0.82 0.79
'320 339 1.04 1.07
- 1. 04 1.12 1.21 1.24 1.25 0.85 0.76 -
340 359 1.31 1.04 1.01 1,43 1.29 1.36 1.19 1.23 360 379 1.35 1.04 0.98 1.28 1.30 0.90 380 399 1.23 1.25 1.09 1.00 1.18 1.62 1.09 1.18 0.88 400 419 1.36 1.31 1.03 1.06 1.02 1.18 1.21 U.82 420 439 1.23 1.29 1.04 1.05 1.14 1.18 1.02 1.52 1.22 1.21 440 459 1.22 1.19 1.02 1,04 1.10 1.11 1.18 9.20 1.20 460 479-1.21 1.21 1.01 1.03 1.09 1.08 1.47 1.58 1.15 1.17 480 499 1.20 1.22 0.99 1.02 1.09 1.09 500 519 1.19 1.16 1.05 1.03 1.11 1.09 520 539 1.21 1.15 1.14 1.12 540 559 1.16 1.L3 1.14 0.88 560 579 1.31 1.34 1.11 580 599 1.18 1.05 1.08 600 619 0.99 620 639 640 659 1.37 660 679 680 699 700 719 1.08 Average 1.22 1.24 1.05 1.06 1.14 1.13 1.17 1.18 1.39 1.39 1.14 1.';
0.78 0.78-48
n.
e Table 8.
Annual Averege Conditlon factor for 1976 1989 Monticello Electrofishing.
$5crthead
$1(ver White SmeLLmouth Northern EECD redhoese redborse sucker bass hoosucker 133r 1
2 1
2 1
2 1
2 1
2 1
2 1976 1.31 1.37 1.10 1.04 1.18 1.18 1.30 1.15 1.47 1.59 1977 1.33 1.35 1.14 1.15 1.19
- 1. 20 1.17 1.14 1.55 1.43 1978-1.35 1.33 1.00 0.99 1.10 1.09' 1.14 1.08 1.31 1.31 1979 1.27 1.28 0.99 0.97 1.04 1.05 1.12 1.19 1.39 1.29 1980
- 1. 25 1.36 1.11 1.12 1.14 1.15 1.15 1.18 1.48 1.43 1.28 1.21
-1981 1.31 1.28 1.06 1.09 1.12 1.11 1.12 1.24 1.41 1.36 1.14 1.36 1982 1.27 1.27 1.07 1.06 1.11 1.09 1.15 1.17 1.42 1.39 1.37 1.28 1953
~
1.31 1.31 1.06 1.08 1.08 1.11 1.15 1.14 1.35 1.33 1.14 1.21 1984 1.26 1.31 1.13 1.16 1.11 1.15 1.22 1.21 1.53 1,57 1.26 1.33 1985 1.21 1.2%
1.07 1.04 1.06 't.06 1.10 1.11 1.40 1.35 1.15 1.19 1986 1.24 1.18 1.02. 03 1.02 1.01 1.09 1.08 1.39 1.52 1.27 1.34 1987 1.33 1.28 1.08 1.08 1.11 1.07 1.17 1.18 1.53 1.50 1.15 1.14 1988 1.30 1.31 1.13 1.13 1.16 1.12 1.11 1.04 5.41 1.35 1.20 1.24 1989 1.22 1.24 1.05 1.06 1.14 1.13 1.17 1.18 1.39 1,39 1.14 1.18 Average 1.28 i.29 1.07 1.07 1.11 1.11 1.15 1.15 1.43 1.42 1.21 1.25 l
49
Table 9.
1989 Length-Weight Relationships for Fish Collected via Monticello Electrofishing (Length in Hillimeters and Weight in Grams).
Species Loc Formula Lenath Range Number of Points Carp Log W = -4.374 + 2.798 log L 240-719 mm 267 Shorthead redhorse Log W = -4.785 + 2.923 log L 160-515 mm 770 g
Silver redhorse Log W = -4.768 + 2.926 log L 180-599 mm 491 l
White sucker Log W = -4.800 + 2.945 log L 160-459 mm 17 Smallmouth bass Log W = -4.787 + 2.961 log L 120-479 mm 145 Northern hogsucker Log W = -5.298 + 3.147 log L 140-479 mm 184 Walleye Log W = -6.321 + 3.481 log L 200-559 mm 17 O
'(
o TABLE 10.
MONINLY AVERAE ElWER ELOW Ai MouilELLO'ENERATING PLANT.
l MONTN 19H 1974 E
19ff - - E
'M'
'1979 1980 E 1982 1983 1984 g-1986 1087 1988 1999-Ayt.
l' JANUARY 3755 3787 6908' 3459: 1295 5800 4830'
- 45.
- 2788 8120 5120 5536 8000 5808 5135 2962
'4524' 4846' FEBRUARY-3644 3875 6297 3763 1754, 4800 5469 4856 2808 ~ 6;c00 ~ 4870 6610 6873
$414' 4436 3132~ '4292 4664-2 MARCH 11132- '3796
'5620 7796 3341' 7500 6352 4653 3023 6030 9970 6813 9164 6211 5783 4096' 4517 6223 i
APRIL 6361 11513 18122 11700 3350 10500' 17161 9238 5578 19560 8090 9601 9454 22400 5396 6331 13495 11050 MAY 6678 16387 - 26355 3815 2202. 1000 '17500.
3611
,5916.17960 5150-9307 14938 23550 5182 3254
.9310 10477 JuME 4038 123M 9323 ' 1903 '.2475 65(0.. 9028 3698 6572 8870 - '8M0 15270 11791 10451 4990 1412 3095' 7186 1 >
. :5500 9313 2008 5130 5560 - 859U 5706 10208 8504 2684 867 3722 5307 -
JULY 2189' 3918 12137 1852 2323 i
t-CDGLfST 4340 3458 3654 1203 1275 6000 4818 2036 5045 3160' 4510 2579 7828 8035 3474 2194 1709 3842 4
l SEPTEMBER 2 771 1616 3325-1052 A20 6300 3919 4105 3592 3630 3770 2310 8994 15442 2759 2474 4286 4351 i
OCTOBER 12289 1719 3133 1151 5617 4700 2967 3522 a399 10720 4920 9146 9498 12128 3375 3202 3575 5886 i
CDVEMBER 7418 4171 3625 1331 6783 3996 6974 3755 6602 7'20 5760 7418 6361 7179 3637 2708 3190. 5197-DECEMBER 4723 25 72 3340 1255 6N.6 3376 4228 3080 5000 6590 5790 8628 6415 6141 3332 3153 2746 4497
-l 5
'i l
AVERAE 5778 5765 8487 3359 3323 6014 7713 4093 5038 - 8652 6243 7410 9127 10939 4184 2999 5039. 6127 i
.i l
4 I
i i
}
a 1
g
.,,g..
,,, +
s
-m-
- - ~
Table 11.
Monticello Water Monitoring Summary (Physical Parameters) Mean Weekly Values Week River Plant River Canal Mean Starting ELgg Intake 22n Ign Ilp.y December 25 3572 513.8 32.1 73.1 5596 January 1
3777 516.0 3 2. '.
71.8 5476 8
3247 520.4 32.2 73.2 5426 15 3642 521.4 32.0 71.5 5134 22 3952 507.8 32.0 70.7 4975 29 4166 522.1 32.1 69.9 4836 February 5
4270 522.1 32.1 69.0 4790 12 4340 520.7 32.1 67.9 4875 19 4463 506.6 32.1 65.6 4934 26 4172 526.1 32.1 66.0 5273 March 5
4497 527.6 32.0 65.2 5s'12 12 4456 525.8 32.1 64.4 5567 19 4264 523.7 32.1 64.3 6754 26 5383 528.8 33.2 63.3
.9639 April 2
11320 512.6 34.0 60,9 10742 9
16280 551.3 36.2 57.1 13450 16 14555 472.0 43.8 67.6 13420 23 12850 536.7 50.8 73.9 11895 30 12499 536.0 48.4 70.0 10376 May 7
11607 553.8 52.8 72.2 10336 14 8019 578.3 63.8 84.0 8672 21 6435 576.3 65.4 85.3 7429 28 7491 579.8 62.1 81.4 6689 June 4
5218 572.6 65.6 84.8 7171 11 4188 567.0 65.8 84.6 7258 18 4552 465.1 72.0 76.0 7693 25 5636 586.3 74.4 81.2 7422 July 2
4790 588.6 79.6 84.5 6164 9
3933 587.6 79.0 83.2 5057 16 3480 583.3 76.6 81.2 4721 23 2792 582.0 78.4 83.1 4241 30 2302 574.0 78.2 83.6 3796 August 6
1752 567.0 73.2 77.4 3608 13 1429 516.4 73.4 76.3 3598 20 1623 128.1 72.1 75.2 4000 27 2400*
4192 1
l 52
Table 11.
(Continued)
September 3
'3200*
4418 i
10 4093 26.0 62.2 65.5 4517 17 4250 27.4 63.6 67.5 5122 24 4349 25.8 58.0 62.7 5389 October 1
4108 16.0 53.4 58.4 5632 8
3598 12.6 50.3 54.6 5709 15 3373 12.7 47.6 49.5 6011 22 3224 5.4 50.9 51.7 5601 29 3452 216.0 45.5 48.2 5392 November 5
3715 469.7 39.4 45.0 5158 12 3220 540.3 34.1 58.9 4780 19 2660 535.2 32.0 70.3 4500 26 2933 203.8 32.5 74.8 4249 December 3
2979 183.0 32.4 75.3 4256 10 2748 164.8 33.2 76.4 4623 17 2580 170.6 33.4 76.7 5706 Average 4958 406.0 49.3 70.3 6186
- Estimated based on flow curve.
53
l MONTICELLO NUCLEAR GENERATING PLANT ENVIRONMENTAL MONITORING PROGRAM 1989 ANNUAL REPORT SEINING STUDY Prepared by:
D. J. Orr Environmental and Regulatory Activities Department Northern States Power Company 55
4 f
SUMMARY
OF THE 1989 MONTICELLO SEINING STUDY INTRODUCTION During
- 1989, a
seining survey was conducted on the Mississippi River near the Monticello Nuclear Generating Plant (MNGp).
Seinable locations over a 1.6 kilometer stretch of river were sampled to make observations on the relative abundance and species composition of the small fish community in the vicinity of MNGP (Figure 1).
Comparisen of these data was made with the previous seining surveys as a historical overview of the relative abundance for this small fish community.
Observations on reproductive success of major "large fish" species were also made using young-of-the-year (yoy) seining data from previous surveys.
Seining was initiated at Monticello in 1970 and since 1977 the study design has remained the same to allow comparison of data through the study period.
Fluctuating water levels cause seining locations to change through the coursa of the study.
An attempt was msde to sample similar habitat types above and below the MNCP discharge structure on each occasion.
In 1989 seining was conducted at approximately two week intervals from 24 May to 12 September.
Soining throughout the season should detect short term fluctuations in young-of-the-year populations due to individual species spawning times and seasonal habitat preferences.
MAU. RIALS AND METHODS A 20-foot seine with 1/8" mesh was used for sampling.
Hauls were directed downstream and the distance of each seining haul was recorded.
Captured fish were immediately placed in a water-filled basin, identified, tabulated, and released.
Voucher specimens were preserved in a 10 percent formalin solution.
57
1 s
s
,s computation of the area sampled was accomplished by multiplying the length of the haul by the width of the seine.
Species abundance indices, or catch-per-unit-effort (cpue),'were computed by expanding the number of fish captured per haul and expressing the results as number per hectare.
Abundance indices were utilized to calculate percent compesition of each species in the total catch.
In the past overall species composition and cpue numbers were computed by simply averaging the upstream and downstream sector numbers.
This year the program was changed to calculate a weighted average for the combined sectors by totaling the numbers of each fish species per sector-and dividing by the total area seined.
This weighted fish / hectare was used to compute-the combined sector' species composition.
All seining data-from 1977 to the present was recalculated using-the altered computer program to maintain data comparability.
The effect on the data was variable and generally resultad in minor changes.
The changes can be observed by comparing data in this report-to the 1988 report.
Freshwater Fishes.of Canada (Scott and Crossman, 1983),
Northern - Fishes (Eddy and Underhill, - 1976), The Fishes of Mist.ouri (Pfliegen, 1975),
and Illustrated Kev to the Minnows of Wisconsin (Backer and Johnson, 1970) were the taxonomic references used to identify captured specimens.
RESULTS The.8,689 fish collected by seining in 1989 were composed of 22 species from five families (Table 1).
Ten families, including 38 cpecies, have been collected from these seining studies.
Table 2 illustrates the annual species percent composition observed and the average for the study period.
Figure 2 depicts the annual average species composition.
58
Tables 3 and 4 depict seasonal abundance (fish / hectare), the yearly avercage, and the overall percent contribution to the total catch for fish collected in the upstream and down-stream study areas, rsspectively.
Figures 3 and 4 depict the average 1989 species composition for the upstream and downstream sectors, respectively.
Table 5 compares annual weighted average fish / hectare for combined sectors from 1977 through 1989 and the average for the study period.
Annual fish / hectare data are graphed in Figure 5.
The 1989 species dominance' ranking for the upstream and downstream areas is compared in Table 6.
Annual dominance ranking for the five most abundant species is shown in Table 7.
Abundance indices for yoy of selected species (smallmouth bass, white sucker, and Moxostoma spp.) are presented in Table 8.
These indices are reviewed annually for an indication of the reproductive success for these dominant "large fish" species found in the MNGP area of the river.
A composite list of fish species collected from the seining and electrofishing studies is compiled in Appendix A.
DISCUSSION No new species were collected in 1989.
Species diversity was slightly lower this year (22) compared to the last few years.
Twenty-six species were collected in 19 8 8, 25 in
- 1987, and 26 in 1986.
The average number of species obtained between 1970 and 1989 was 23.7 species per year.
Northern pike.,
- cisco, creek chub, fathead minnow, brassy minnow, golden shiner, mimic shiner, carp, blacknose dace, northern redbally dace, black bullhead, yellow bullhead trout perch, brook stickleback, white crappie, rock bass, and yellow perch were species found in previous surveys but were not seen in 1989.
59
l l
l l
The dominant species in the upstream collections in 1989 were:
spotfin shiner, sand shiner, bluntnose minnow, unidentified shiner species, and bigmouth shiner.
Dominance ranking for the species in the downstream samples were:
spotfin shiner, bluntnose minnow, sand shiner, unidentified shiner species, and biguouth shiner.
The combined upstream and downstream species dominance ranking for 1977 to 1989 is listed on Table 8.
It is apparent from this dominance ranking that the spotfin shiner, bluntnose minnow, and sand shiner are the major forage fish in this section of the river.
During the 1989 survey 19 species were collected in the upstream sector and 21 species were found in the downstream sector.
Black crappie,
- bluegill, and walleye were found downstream only; while longnose dace was only found in the upstream area.
Historically, species abundance and diversity have been greater in the thermally influenced portion of the MNGP seining study area.
In 1989, as in 1987 and 1988 species abundance was higher in Sector 1, however, species diversitv was higher in Sector 2.
The difference in abundance may reflect the greater efficiency in seining the shallow upstream riffles as opposed to the deeper runs in the downstream sector.
Figure 2 illustrates the average percent contribution of the various species during the study period.
Shiners comprised 75 percent of the fish caught in both sectors in 1989 (Figures 3 and 4) compared to an average of 60 percent (Figure 2).
Total and individual species abundance also varies widely.
Estimated fish / hectare has ranged from 6,000 in 1979 to nearly 29,000 in 1985 (Table 5).
Figure 5 illustrates the influence of shiner abundance on total fish abundance.
The portion of the annual bar in the figure that t
60
represents species other than shiners remains relatively constant while the' portion representing shiners fluctuates widely.
Table 7 illustrates the average abundance (fish /ha) of smallmouth bass, white sucker, and lioxostqaa spp. since 1973.
Smallmouth bass abundance declined in both sectors in 1989 but most dramatically in the downstream sector.
Smallmouth bass were below the 14-year averages in both sectors.
A number of factors may have contributed to this decline.
The past two years have witnessed high year class survival resulting in a large population of one and two year old bass that were likely preying on the yoy bass, reducing their abundance.
River and weather conditions during the spawning and nestity period were more variable this year which may have resulted in lower survival of these life stages.
Some of the decrease may be a result of the MNGP being off-line during August and September when the last seining surveys were conducted.
The lack of the warm-water plume which usually attracts the yoy smallmouth at that time of year was not present in 1989.
The attraction of the warm-wate'r plume can be noted in past annual' reports and is indicated in Table 8 which shows higher smallmouth bass abundance in the downstream sector nearly every year.
White sucker numbers were down from last year, and were below the average, in both sectors in 1989.
The variability in white sucker abundance is evident in Table 8.
In 1989 the abundance of Moxostoma spp. per hectare increased in the upstream sector and decreased greatly in the downstream sector average from 1988.
Both were below the sector averages.
SUMMARY
A total of 8,689 fish was collected by seining in the 61
i Mississippi. River near MNGP in 1989.
Twenty-two species from five families were identified.
Thirty-eight species from ten families have been identified during the fifteen study years.
Dominant species in 1989 were spotfin shiner, sand shiner, and bluntnose minnow.
These three species have consistently been the most dominant small fish species during the study period.
Abundance indices indicated a preference for Sector 1 over Sector 2 in 1989.
Overall abundance was lower in 1989 than in the past few years but higher than the averaga for the study period.
Abundance indices for yoy smallmouth bass were lower in both sectors in 1989.
Numbers of White sucker yoy and Moxostoma spp. decreased slig'-tly from the study average.
ACKNOWLEDGMENTS A special thanks is given to Dr J C Underhill and his University of M3.nnesota staff for verification of certalit specimens.
~
62
LITERATURE CITED
- Becker, G.C.
and T.
R. Johnson.
1970.
Illustrated Kev to th e._ Einaows of Wisconsin.
Wisc State University, Stevens Point, Biology Department.
45pp.
- Eddy, S.
and J.
C.
Underhill, 1976.
Northern Fishes.
University of Minnesota Press, Minneapolis, MN. 414 pp.
- Pflieger, W.L.
1975.
The Fishes of Missouri.
Missouri Department of Conservation Publication.
343 pp.
- Scott, W.B.
and E.J.
Crossman.
1973.
Freshwater Fishes of Canada, Bull.
184 Fisheries Research Board of Canada, Ottawa.
966 pp.
I l
63
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(
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)
)
t
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0 s
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- .LANT SITE -.
4 mung COOLING 7eggg3 DISCHARGE U
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LANDING s
e I
/
NMAL f
PLUMg D SIPPI PARK
,/
p o
- I' Muticello g,g f
65
Figure 2 Monticello Seining Study Species Composition 1977 To 1989 i
Spotfin shiner 27%
Sand shiner 22%
m b::$ I
(...___.._...._- ::::-\\
--7
's Other 9%
\\_.-_
j\\
i O
\\'
s.
Bluntnose minnow 16% \\;
~-----
c\\
~~"
s-M N
Shorthead redhorse 2%
N-:--
\\
Smallmouth bass 2%
%{
j
\\
/
Bigmouth shiner 37 White sucker 4%
Shiner spp. 7%
Moxostoma app. 4%
Johnny darter 5%
~
Weighted Average of Both Sectors
- - - u-
~
Figure 3 1989 Monticello Seining Study Upstream Species Composition Spotfin shiner 44%
\\
Smallmouth bass 1%
i Other 4%
,A m
Moxostoma spp. 4%
~22 s
~~h Bigmouth shiner 5%
l
/ -:E[jg-- :g
~
Shiner spp. 7%
!b :::
- 9
~
~
Sand shiner 24%
--- 3En b
}
y?'
~"
Bluntnose minnow 11%
Figure 4 1989 Monticello Seining Study Downstream Species Composition Spotfin shiner 54%
'2=
Other 4%
ggggjs N
Moxostoma spp. 2.%
g-g_g;:g Bigmouth shiner 3%
j ;_j?EEE[
Smallmouth bass 3%
/
Shiner spp. 6%
p)Eh:::: :
Bluntnose minnow 20%
lid;j;;533:7 Sand shiner 9%
e
Figure 5 Monticello Seining Study
~
Annual Fish / hectare j
\\
Fish /ha (1000's) 25 j
20
=
l
'5 l
L__l Other l
10 9 Johnny darter E Bluntnobe minnow E Smallmouth bass l
E Moxostoma spp.
E Shiner spp.
1977 1979 1981 1983 1985 1987 1989 i
Weighted Average of Both Sectors
~
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Table 2.
1989 Nonticetto setning study species Percentega Composition i
i species 1970 jM 1976 1977 g
1970 j,931 1981 Ne*thern pike Cisco
<0.1 Mornyhead chub 3.1 1.7 0.1 3.0 0.2 1.0 1.1 1.8
)
Creek chub 0.3 0.1
<0.1 j
Fathead minnow 0.9 0.6 0.2 0.4 0.1 0.4 0.1 Btuntnose minnaw 12.7 16.2 23.4 18.1 40.3 7.3 5.3 6.3 Brassy minnow 0.3 spotfin shiner 21.1 23.5 23.4 19.3 22.5 15.0 12.6 11.2 Bigmouth shiner 27.3 21.8 12.4 22.1 28.6 42.4 5.1 3.0 send shiner 18.4 21.6 15.3 5.6 0.1 13.0 8.9 36.6 4Iver ehiner 6.6 0.4 Spottelt shiner 1.0 0.8 0.2 0.2 0.8 2.4 0.1 Common shiner 2.9 3.4 0.2 1.2 0.8 0.4 0.1 0.7 Mimic shiner 0.1 0.1 0.1 Corp 0.5 0.1 0.4
<0.1 Stecknose doce 0.4 0.3
<0.1 40.1
<0.1 0.1 Longnose doce 3.1 0.7 2.0 0.5 1.1 3.5 1.6 Silver redhorse 1.1 0.8 0.1 1.0 0.4 Shorthead redhorse 3.3 0.1 0.2 1.3 1.6 White sucker 2.5 3.9 2.5 6.3 1.2 5.0 29.7 2.8 Worthern hogeucker 0.3 2.3 0.9 Stack bullhead 0.1
<0.1 Yo! Low butthead Trout. perch 0.4 0.1 0.7 0.1
<0.1 Brtok stickleback
<0.1 Brook ellverelde 0.1 0.1 smettmouth bees 1.7 1.0 0.4 0.4 1.2 4.1 6.2 3.9 Largemouth bees 0.2 0.1 0.4 Black crapple 0.1 0.6 0.2 0.2
<0.1 White crapple
<0.1 Rock base 0.1 0.2
<0.1
<0.1 Btueglit
<0.1
<0.1
<0.1 0.1 0.3 0.4 Log perch 0.2 0.3 3.9 0.1 3.9 1.4 Johnny darter 5.0 2.6 1.3 6.2 1.3 1.4 8.9 3.4 Welleye 0.1 0.1 Yellow perch
<0.1 0.1 Blackolde derter
<0.1 shiner opp.
0.3 1.6 0.2 1.8 0.3 4.4 Menestems opp.
0.3 0.6 16.9 0.5 5.1 5.6 19.0 Cen*rerchid app.
e Redhorse present but not differentleted in 1970 1973 and 1976.
72
e e,.
Table 2.
1989 Monticetto telning 6tudy Species Percentage Composition (Continued) toeeiee 11LL M11 11[.6,,
loh 1211
- 111Z, 12,H.
HQ Ayerene Northern pike
<0.1
<0.1 0.1 0.6 0.1 Cisco
<0.1 Nornyhead chub 1.4 2.6 2.J 2.0 2.7 0.3 0.4 0.1 1.4 Creek chub
<0.1
<0.1 Fathead alnnow 0.3 0.1 1.0 0.1 0.4 0.1 0.2 Stuntnose minnow 12.6 9.4 12.5 16.6 21.5 14.6 16.8 14.2 15.0 Brassy minnow
<0.1 0.1
<0.1
- 0.1
<0.1 Wpotfin shiner 41.8 3f.7 31.1 28.2 23.9 18.9 42.3 47.8 26.9 Sismouth shiner 3.4 2.5 2.4 5.8 4.1 4.4 3.9 4.4 10.2 Sand shiner 10.7 20.9 21.8 35.0 20.7 4.8 7.4 18.3 15.7 River shiner
<0.1 0.5 Spottelt sh nor 0.7 0.4 0.3 0.1 0.2 1.0 0.2 0.9 0.6 Common shiner i.6 0.6 0.2 0.1 0.2 0.1 0.3
<0.1 0.5 Mimic shiner 0.1
<0.1
<3.1
<0.1
<0.1 Corp
<0.1
<0.1 0.5 0.1 0.1 Blacknose doce 0.3 0.2
<0.1 0.1 0.7
<0.1 0.1 Longnose doce 2.2 1.4 2.7 0.2 0.2 3.0 0.2 1.3 tilver redhorse 0.1 0.2 0.1 0.1 3.1 0.5 0.1 0.6 shorthead redhorse 1.1 0.6 0.1 0.3 0.2 6.6 3.3 0.4 1.5 White sucker 4.8 0.8 2.9 1.2 0.1 4,9 3.6 0.4 4.7 Northe*n ho0 sucker 1.0 1.0 0.5 0.3 1.2 0.2 0.3 0.6 Black butthead
<0.1 40.1 0.1
<0.1 Tellow butthead
<0.1
<0.1 freut perch 2.3 0.8 0.1 1.2 0.1 0.7 C.5 Brook sticktobeck
<0.1
<0.1 Brook silverside
<0.1 0.2 40.1
<0.1
<0.1 0.1 0.1
<0.1 Seattmouth bass 4.8 2.2 1.6 0.7 0.4 1.8 4.2 1.4 2.)
Largemouth bass 0.1
<0.1
<0.1 0.1 0.1 Black crapple
<0.1 0.2 0.4 0.1 0.4 0.4 0.1
<0.1 0.2 White crapple 0.2 0.1
<0.1 tock bass
<0.1 0.2 0.4 0.1 ttuegitt 0.1 0.4 0.6
- 0.1 0.5 0.2
<0.1 0.2 Log perch 0.1 1.6 2.4 0.1 0.2 1.7 0.9 0.2 1.3 Johnny dartet 2.9 0.9 5.0 4.5 10.3 6.0 2.1 0.7 4.1 Welleye 0.1 0.1
<0.1 0.1.
0.1
<0.1 Yetlow perch
<0.1 0.1
<0.1 Blackside darter 0.3 1.4 0.1 0.1 0.9 0.6 0.4 0.3 shiner spp.
4.2 1.8 7.9 1.9 12.8 17.2 9.7 6.8 5.4 Nonostoon spp.
3.8 14.4 3.3 0.6 0.3 6.3 5.3 2.9 5.2 centrarchid app.
0.1 0.5
<0.1
<0.1 e
73
e e i.
4 Table 3.
1989 Honticetto teining $ttdy + Ff th/ Hectare, Averspe, and Percent of Catch for th6 Upstream turvey Area.
Species
}/26 ff.f (flQ 7/11 ffl1 2Z8 fjlQ
?f,,1[
Ay3 EfIS.t3 Hornyheed chub 1 04 11 0.1 Bluntnose alnnow 1664 e18 987 4332 1784 63 108 7326 20S4 10.8 Spotfin shiner 856 6279 2811 11625 3739 602 23358 30451 8473 44.0 Blynouth shiner
$14 837 867 1453 821 380 2960 1111 993 5.2 Sand shiner 2128 8970 419 2045 7960 4274 7804 3680 4690 24.3 River shiner 35 4
<0.1 spottalt shiner 30 27 57 63 484 1920 254 1.3 C: mon t.hiner 35 4
<0.1 Longnose once 209 108 28 323 65 0.3 Sliver redhorse 161 11 0.1
$horthead redherse 32 54 7
<0.1 White surier 24 30 646 63 54 35 109 0.6 horthem hogsucker 30 27 28 158 35 33 0.2 Brook silverside 139 14 0.1
$mattmouth bass 60 350 283 158 174 127 0.7 Largemouth bass 85 11 0.1 Lopperch 120 222 47 0.2 Johnny darter 149 565 227 915 139 199 1.0 stockside derter 90 108 57 32 54 139 54 0.3 Noxostome spp.
1196 4126 108 732 3.8 shiner app.
2792 1435 30 62 323 4792 1355 7.0 Total 8978 19535 9838 21394 15069 6110 36598 50115 19277 74
1 Table 4 1989 Monticolto telning Stu:fy Fish /Hectere, Average, Percent of Catch for the Domstrewn Survey Area.
Sreely
),/24 f/s (f@
7/11 Z/2,1 gl)
{@
M Averset Perceat-HornW eed chub 27 27 20 0.2 Blmtnose minnru 4377 5382 3229 1868 323 1372 359 1142 2216 19.6 spotfin shiner 7104 6955 12848 7494 4543 5140 248 2088 6079 53.8 Bigmouth shiner 3 23 883 344 102 269 81 683 355 3.1 sand shiner 870 2401 962
$48 834 242 1490 620 986 8.7 River shiner 28 3
<0.1 Spottat t shiner 188 27 98 37 0.3 Comon shiner 36 27 7
0.1 silver redhorsc 69 81 54 33 34 0.3
$hort'iend redhorse 389 81 188 81 196 124 1.1 White sucker 36 142 27 30 0.3 horthern hogsucker 321 20 27 98 64 0.6 Brook silversloe 28 3
<0.1
$matimouth bass 183 630 296 134 580 294 285 2.5 Largemouth bass 41 54 27 83 27 0.2 Stock crapple 27 28 7
0.1 Bluegilt 46 27 10 0.1 Lopperch 81 10 0.1
.lohnny darter 83 20 81 23 0.2 Walleye C3 20 81 23 0.2 Blackside darter 20 296 134 57 0.5 Menestma spp.
745 527 20 27 1 74 1.5 Shiner spp.
5525 356 252 54 304 228 724 6.4 Total 18271 17416 19170 11087 7455 7346 4003 4777 11298 75
.I
fable 5.
1989 manticello Seining Stucht a Weighted Averspe fish /Nectare Both Sectors Cert >tred.
for 19T7 through 1989.
U21!.t1 M 12Z0 1?.D
.L.2 M 12U M l?M M.LM M 1 Ell M ttM Worthem pike 3
1 9
100 8.7 Cisco 2
0.2 Herre,tiesd chW 465 18 61 97 1 72 139 220 246 567 450 84 61 16 197.7 Creek ch e 3
2 0.4 Flethead altnw 34 4
4 34 7
24 18 295 9
103 9
44.9 titritnose mirrw 2774 4301 439 467 597 1272 793 1569 4764 3590 3570 2763 2153 2234.7 Bressy mirrow 3
4 2
5 1.1 Spotfin shiner 29M 2404 905 1117 1062 4214 3027 3902 8110 3983 4 17 6940 7230 3882.6 Blynouth shiner 3392 3058 2564 45$
281 340 211 306 1675 653 1067 644 622 1179.8 Sand shiner 867 0
784 785 3453 1074 ITM 2739 10064 3457 1160 1210 2766 2318.0 River shiner 1010 27 3
80.0 Spottall shiner 23 18 45 209 7
73 31 33 43 38 254 29 141
- 72. 7 Comai shtrwr 189 87 23 6
64 162 52 27 43 33 7
57.9 Mimic thiner 6
9 4
2 4
2.3 Cerp 10 32 2
1 4
110 11 13.2 Longnose doce 70 68 312 156 218 117 333 58 33 741 31 164.4 Blacknose doce 5
5 6
25 22 8
24 1 73 7
21.1 tilver redhorse 176 87 8
91 42 14 21 7
4 14 748 89 23 101.8
$horthead r** orse 511 14 11 111 151 112 51 18 85 38 1599
$46 68 255.0 White sucker 968 128 299 2630 262 482 69 368 346 5 1191 105 62 532.5 Northem hogeucker 19 199 85 103 84 58 43 295 29 49 74.1 6.ack butthead 2
1 2
12 1,4 Yetlow buttheed 2
0.1 frout. perch 16 78 4
2 234 e6 9
358 14 161 72.2 Brook stickleback 2
4 0.5 Brook ellverelde 10 9
3 19 4
5 5
12 9
5.9 thustLmouth bees 55 133 24 54 7 3 73 488 183 198 214 62 427 689 209 294.0 Largemouth bees 4
36 9
4 5
19 5.9 Black crapple 64 11 16 5
3 15 55 16 66 91 0
3 27.3 White crapple 13 38 20 5.5 Rock base 29 2
2 10 16 61 9.2 Bluegill 5
5 8
22 38 11 37 75 8
113 34 5
27.8 Losperch 594 9
346 132 14 132 304 43 28 410 154 28 168.8 Johmy darter 947 137 83 791 323 237 73 621 1236 1721 1458 348 108 A29.6 Welleye 8
7 11 9
4 16 12 5.2 Yellow perch 5
4 3
13 1,9 ILackeide cesrter 2
24 173 19 24 211 105 56 47.3 P*ovostoms opp.
50 311 497 1792 379 1219 417 187 43 15 4 869 442 5%.3 shiner s m.
249 18 106 28 418 418 156 944 544 2129 4195 1589 1028 913.3 Centrarchid app.
6 76 5
6.6 Total 15367 10695 6040 8846 9447 10071 8467 12537 28759 16682 24377 16406 15134 14064 76
Table 6.
1989 Honticello Soining Study
- Specios Composition of the Upstream and Downstream Sectors.
UDstream Percent Downstream Percent Spotfin shiner 44.0 Spotfin shiner 53.8 Sand shiner 24.3 Bluntnose minnow 19.6 Bluntnose minnow 10.0 Sand shiner 8.7 Shiner species 7.0 Shiner species 6.4 Bigmouth shiner 5.2 Bigmouth shiner 3.1 Moxostoma species 3.8 S?allmouth bass 2.5 Spotta11 shiner 1.3 Moxostoma species 1.5 Johnny darter 1.0 Shorthead redhorse 1.1 Smallmouth bass 0.7 Northern hogsucker 0.6 White sucker 0.6 Blacksido darter 0.5 Blackside darter 0.3 White sucker 0.3 Longnose dace 0.3 Silver redhorso 0.3 Logpercn 0.2 Spottail shiner 0.3 Northern hogsucker 0.2 Johnny darter 0.2 Silver redhorsa 0.1 Hornyhead chub 0.2 Hornyhead chub 0.1 Walleye 0.2 Brook silverside 0.1 Largemouth bass 0.2 Largemouth bass 0.1 Logperch 0.1 Shorthead redhorse
<0.1 Common shiner 0.1 Common shiner
<0.1 Bluegill 0.1 River shiner
<0.1 Black crappie 0.1 Brook silversido
<0.1 River shiner
<0.1 77
t fable 7 Species Domitunce tarairgs for Combird sect;rs fram 1976 Through 1989.
Species Rank Blpnouth SM Sitntnose Spotfin i
Shorthead shiner thite Peo ostane Jdwry
$mstimouth fear mimons shiner shiner shiner redsorse species steker species darter bass i
1976 2
3 1
5 4
1977 2
3 1
4 5
1978 3
2 1
t 1979 3
2 1
5 4
1980 3
4 1
5 3
i 1981 4
n 1
2 5
1932 2
1 3
5 4
1983 4
1 2
3 5
19 %
3 2
2 4
5 1
1985 3
1 4
1 5
1936 2
1 3
4 5
1987 3
1 4
2 5
1958 2
1 4
3 5
3-l 1989 3
1 5
2 4
Includes both sand and birnouth shiners from 1976 through 1979.
A l
Table 8.
1989 Monticello Seining Study - Average number of smallmouth bass, white sucker, and Moxostona spp.
collected per hectare.
Smallmouth bass Upstream Downstream Weighted Fish /ha Fish /ha Averace Fish /ha 1973 256 92 174 1974 380 152 266*
1976 135 1977 101 12 55 1978 101 167 133 1979 9
465 246 1980 237 927 547 1981 61 741 373 1982 668 309 488 1983 124 216 183 1984 214 198 198 1985 122 291 214 1986 34 75 62 1987 73 766 427 1988 234 1228 689 1989 127 285 209 Average 183 395 284 White suckgr 1973 1881 1416 1649 1974 250 78 164 1976 1501*
1977 2401 157 968 1978 240 65 128 1979 364 236 299 1980 4003 2548 2630 1981 455 55 262 1982 697 257 482 1983 135 39 69 1984 189 921 368 1985 515 140 346 1986 0
10 5
1987 2089 329 1191 1988 132 74 105 1989 109 30 68 Average 897 424 582
~.
e Table 8.
(Continued)
Moxostoma spp.
Upstream Downstream Weighted Fish /ha Fish /ha Averace Fish /ha 1973 989 1140 1064 1974 841 797 819 1976 9823*
1977 405 494 450 1978 201 125 163 1979 103 179 141 1980 1124 515 820 1981 2950 814 1792 1982 693 127 379 1983 1302 1014 1219 1984 358 615 417 1985 219 125 187 1986 0
73 43 1987 2153 964 1546 1988 629 1154 869 1989 732 174 442 Average 847 554 690
80
=*
$2 APPENDIX A.
Species List Based on seining and Electrofishing Data Method Sampled
- AMIIDAE Bowfin Amia calva E
SALMONIDAE Cisco Coreconus artedi B
ESOCIDAE Northern pike Esox luciua B
Muskellunge Esox mascuinonay E
CYPRINIDAE Hornyhead chub Uocomis biauttus S
Creek chub Serotilus atromaculatus S
Fathead minnow Pimenhales oromelas S
Iluntnose minnew Pimechales notatus S
Brassy minnow HZhngnathus hankinsoni S
Spotfin shiner Notropis s_pilootorus S
Bigmouth shiner Notronis dorsalis S
Sand shiner Notropis stramineus S
River shiner H2_tronis blennius S
Spottail shiner Notronis hudsonius S
Common shiner Notropis cornutus S
Golden shiner Notemiconus crvsoleucas S
Mimic shiner Entroofs volucellua S
Carp Cvorinus carnio B
Longnose dace Rhinichthys cataractac S
Blacknose dace Rhinichthys atratulus S
No. redbelly dace Puoxinus eos S
CATOSTOMIDAE Silver redhorse Moxostoma anisurum B
Shorthead redhorse Moxostoma macrolepidotum B
' Greater redhorse Moxostoma valenciennesi E
White sucker Catostemus commexagni B
Bigmouth buffalo Ictiebus cvorinellus E
Northern hogsucker Hvoentelium niaricans B
ICTALURIDAE Channel catfish Icta)prus nunctatua E
Black bullhecd Ictaletus melas B
Yellow bullhead Ictaluruc natalia B
Nrown bullhead Ictalurus nebulosua E
m e
.m m
i
~
- f i
APPEllDIX A.
(Continued)
PERCOPSIDAE Trout-perch Percorsio omiscomavcue S
GADIDAE Burbot Lota iota E
ANTHERINIDAE Brook silverside Labidesthes sicculus S
GASTEROSTEIDAE Brook stickleback Culaea inconstans S
CENTRARCHIDAE Smallmouth bass Microoterus dolomioui a
Largemouth bass' dierooterus salmoides B
Black crappie Pomoxis nioromaculatus B
White crappie Ponioxis annularis B
Rockbass Ambloolltes rueestris B
Bluegill Lepomis macrochirup, B
Pumpkinseed Locomis albbosus E
Green sunfish Lgpomis cyanellus E
PERCIDAE Yellow perch Perca flavescens B
Walleye Stizostedien vitraum B
Johnny darter Etheostoma niarum S
Blachside darter Percina maculata S
Logparch Egreina caoroden S
- S = Seining E = Electrofishing B = Both 82