ML18038A595

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Flood Insurance Study:Town of Scriba,Oswego County,Ny. W/Three Oversize Flood Insurance Rate Maps.Aperture Cards Are Available in PDR
ML18038A595
Person / Time
Site: Nine Mile Point Constellation icon.png
Issue date: 08/25/1983
From:
Federal Emergency Management Agency
To:
Shared Package
ML17054A040 List:
References
NUDOCS 8308300695
Download: ML18038A595 (95)
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TOWNOF.SCRIBA,NEWYORKOSWEGOCOUNTY.'c~C'308300695 830825PDRADQCK050004iOF".PDROocte~~A-""CoIItro>W~~~++tlate~~af ttoculent:

RrGULATORYDOCKETFlLEfederalemergency management agencyCOMMUNITY NUMBER-360663 0

TABLEOFCONTENTSPacae1o0INTRODUCTION 1.1PurposeofStudy1.2Authority andAcknowledgements 1.3Coordination 2~0AREASTUDIED2~1ScopeofStudy2.2Community Description 2.3Principal FloodProblems2.4FloodProtection Measures~0ENGINEERING METHODS3.1Hydrologic Analyses3.2Hydraulic Analyses4~0FLOODPLAINMANAGEMENT APPLICATIONS 4.1FloodBoundaries 4.2Floodways 5'INSURANCE APPLICATION 1213135.1ReachDeterminations 5.2FloodHazardFactors245.3FloodInsurance Zones245.4FloodZnsurance RateMapDescription 25

TABLEOFCONTENTS-continued Pacae6~0OTHERSTUDIES257~0LOCATIONOFDATA258~0BIBLIOGRAPHY ANDREFERENCES 25FIGVBESFigure1>>VicinityMapFigure2-Potential 100-yearfloodlevelforWalkerCreekattheCreameryRoadbridgeFigure3-FloodwaySchematic 211lQKESTable1-SummaryofDischarges 9-10Table2-FloodwayData15-20Table3-FloodInsurance ZoneData22-24EXHIBITSExhibit1-FloodProfilesOswegoRiverWineCreekWalkerCreekLycomingCreekCliffRoadCreekLakeviewCreekHarborBrookPanelsPanelPanelsPanelsPanelsPanelsPanel01P-02P03P04P-05P06P-08P09P-12P13P-14P15PExhibit2-FloodBoundaryandFloodwayMapIndexExhibit3-FloodBoundaryandFloodwayMap

TABLEOFCONTENTS-continued I(PUBLISHED SEPARATELY:

FloodInsurance RateMapIndexFloodInsurance RateMap 00 FLOODINSURANCE STUDYTOWNOFSCRIBA~NEWYORK1~0INTRODUCTION 1.1PurposeofStudyThisFloodInsurance Studyinvestigates theexistence andseverityoffloodhazardsintheTownofScriba,OswegoCounty,NewYork,andaidsintheadministration oftheNationalPloodInsurance Actof1968andtheFloodDisasterProtection Actof1973.ThisstudywillbeusedtoconvertScribatotheregularprogramoffloodinsurance bytheFederalEmergency Management Agency(PEMA).Localandregionalplannerswillusethisstudyintheireffortstopromotesoundfloodplainmanagement.

Insomestatesorcommunities, floodplainmanagement criteriaorregulations mayexistthataremorerestrictive orcomprehensive thanthoseonwhichthesefederally-supported studiesarebased.Thesecriteriatakeprecedence overtheminimumfederalcriteriaforpurposesofregulating development inthefloodplain,assetforthintheCodeofFederalRegulations at44CFR,60.3.Znsuchcases,however,itshallbeunderstood thatthestate(orotherjurisdictional agency)shallbeabletoexplaintheserequirements andcriteria.

1.2Authority andAcknowledgements Thesourceofauthority forthisFloodInsurance StudyistheNationalFloodInsurance Actof1968andtheFloodDisasterProtection Actof1973'hehydrologic andhydraulic analysesforthisstudywerepreparedbyLockwood, KesslerandBartlett, Inc.forthePederalEmergency Management Agency,underContractNo.H-4741.Thisworkwascompleted inJune1980.1.3Coordination AninitialConsultation andCoordination Officer's (CCO)meetingwasheldonApril14,1978toidentifystreamsrequiring detailedstudy.Thismeetingwasattendedbyrepresentatives ofLockwood, KesslerandBartlett, Inc.(thestudycontractor),

theFEMA,andtheTownofScriba.Alegalnoticeannouncing theintenttoperformthestudyandstatingitsobjectives wasplacedinthelocalnewspaper.

Duringthecourseofthisstudyseveralfederal,stateandmiscellaneous agencieswerecontacted forinformation.

Federalagenciescontacted 0

includedtheBuffaloDistrictoftheU.S.ArmyCorpsofEngineers (COE),theSoilConservation Service(SCS),theU.S.Geological Survey(USGS),theNationalOceanicandAtmospheric Administration (NOAA),theU.S.Department ofCivilDefenseandtheFederalDisasterAssistance Administration.

Agenciescontacted fromtheStateofNewYorkincludedtheNewYorkStateDepartment ofCommerce, theDepartment ofState,theDepartment ofStateCommunity AffairsLibrary,theDepartment ofEnvironmental Conservation (FloodControlSection),

theStateLibrary,theDepartment ofTranspor-tationandtheOfficeofDisasterPrepardness TheOswegoCountyPlanningBoard,theNewYorkPublicLibraryandrepresentatives oftheTownofScribawerealsocontacted forrelatedinformation.

Theresultsofthehydrologic analyseswerecoordinated withtheCOE,theUSGS,theSCSandtheNewYorkStateDepartment ofEnvironmental Conservation (NYSDEC).

OnSeptember 16,1981,theresultsofthestudywerereviewedatthefinalCCOmeetingattendedbyrepresentatives ofthestudycontractor, theFEMA,community officials andinterested citizens.

2~0AREASTUDIED2o1ScopeofStudyThisFloodInsurance Studycoverstheincorporated areaoftheTownofScriba,OswegoCounty,NewYork.TheareaofstudyisshownontheVicinityMap(Figure1)~TheLakeOntarioandOswegoRivershorelines withintheTownofScriba,WineCreek,fzomTownLineRoadtoChurchill Road,thesegmentofWalkerCreekbetweenStateRoute104andMiddleRoad,LycomingCreek,fzomtheHamletofLycomingtoitsmouthatLakeOntario,CliffRoadCreek,fromthevicinityofConrailtoitsmouthatLakeOntario,LakeviewCzeek,fromLakeviewRoadtoitsmouthatLakeOntario,and300feetoffloodingaffecting ScribafromHarborBrookintheCityofOswegoalongthewestcorporate boundarywerestudiedbydetailedmethods.Theareasstudiedbydetailedmethodswereselectedwithprioritygiventoallknownfloodhazardareasandareasofprojected development andproposedconstruction forthenextfiveyears,throughJune1985.AportionofWalkerCreekTributary fromitsconfluence withWalkerCreektotheConrailcrossing, a1,000footsegmentofLakeCreekbeginning atthewesternboundaryoftheTownofScriba,theremainder ofWineCreekfromtheChurchill Road-HallRoadintersection toDeerRidgeRoad,Deer

IXICOII,1)!~aia.)aICVa~b'afLiII(IIkirUskILAZEONTARIO~aPft0'o-.~.'is(i.'jpgC'bSrr~~ar.(WaterI$0Demster~:q",pach.1T6s,q'4"~vV>~i~'iLorrrbCakevi>6c,niOa;,.m(iQb,c3(eFLo4aI~ems">0ablairluu!vorcriaEastLightWastgjeiagXeswggoSNew{~HaCIrItin4Ra'"acribnstaIView4.rOils-ewHava't'+'>rls asrst4ev)Q(5{vi)qc,rsial(ey9(,'!(..o,'.i:"e/.0~:8leiC-cclb'(i0',VViiigoar qn4oNortholney(yi\rercP'arimbarnemnge,caHil[eill)alarmi-Hastn)leant4-~eee~jrrinI(eqSeal)nComes~r'laII'8~Flonniclpal~irs5?r~ib0Q$rt69FairltanOuterhero~iiGanby~(e(1!j,'hq,b'4'a'ail'f IIifayenolersCr.ttranbeLiler~b~t,'Ir-Radip~tewerOextville9faralIotytCoeneIraLbaXibaa fgF,testings alaa{bJ'iI'x(,'aJ+'k'l.

BOgearor'(r.o!'Iq(,,a.9a'ab~if'~%PIinn)i)Squate'ta bICe(i4aIfb----------2----FEDERALEMERGENCY MANAGEMENT AGENCY0APPAOXIMATE SCALK412MI!.ESTOINOFStlHlBA,NY(oswEGoco.)VICINITYMAP

RidgeCreekandDeerRidgeCreekTributary, BlackCreekandBlackCreekTributaries 7through9,PaddyCreek,PaddyPondTributaxy, CrooksPondTributary, BlackCreek,CrooksCreek,CrooksPond,PaddyPondandportionsofMudPondCreeklocatedwithinScribawerestudiedbyapproximate methods.Approximate methodsofanalysiswereusedtostudythoseareashavinglowdevelopment potential andminimalfloodhazardsasidentified attheinitiation ofthestudy.ThescopeandmethodsofstudywereproposedtoandagreeduponbytheFEMA.202Community Description TheTownofScriba,encompassing alandareaof41'squaremiles,islocatedinthenorthwestern sectionofOswegoCounty,NewYork,alongthesouthernshoreline ofLakeOntario.Scribaisapproximately 28milesnorthoftheCityofSyracuse, NewYork.XtisborderedbytheTownofNewHavenontheeast,theTownofVolneyonthesouthandtheTownofMinettoandtheCityofOswegoonthewest.Zn1970,thepopulation ofScribawas3,619,approximately 45percentgreaterthanits1960population of2,489(Reference 1).Thisgavethetowna1970population densityofapproximately 88personspersquaremile(Reference 2).TheTownofScribawasincorporated onApril5,1811,andwasonceaprosperous dairyingarea,althoughitisnowknownforitsextensive vegetable andfruitproduction.

WhilemanyofScriba's0residents workinthesurrounding region,severalmajorindustries provideemployment withinthetown.Theseindustries includeanAlcanAluminumPlant,theJ.A.Fitzpatrick NuclearPowerPlantandtheNine~lile PointNuclearPowerStation.TheTownofScribalieswithinthegeographical areaknownastheLakeOntarioPlains,whicharelocatedwithinthegreatergeographical-areacalledtheGreatLakesPlain.TheGreatLakesPlainextendsalongthefulllengthofthenorthernandwesternbordersofNewYorkState,connecting LakeErie,LakeOntarioandtheSt.LawrenceRiver(Reference 2).Zntheeast-central portionofthetown,theterrainisrelatively level.Zntheremainder ofthetowntheterrainconsistsprimarily ofrollinghillsanddrumlinformations.

Elevations withinScribarangefromalowof246feetattheLakeOntarioshoreline toahighof515feetjustsouthoftheStateRoute104-DelancyAirport.Roadinter-sectionThelanduseinScribaispredominantly undeveloped, agricultural, orcomprised offorest.Smallorchardsarealsolocatedintermittantly throughthetown.Wetlandsareplentiful, withTealHarshandthewetlandssurrounding BlackCreekthemostsignificant (Reference 3).Residential andcommercial development tendstofollowthemaintrafficcorridors-Smallconcentrations ofresidential development arefoundin

theHamletsofLycoming, Scriba,Lakeview, JonesCorner,andintheareanortheast oftheMallRoad-TownLineRoadintersection ineasternScriba.Approximately 7.4milesoftheLakeOntariocoastline formsthenorthernborderoftheTownofScriba.AportionofScriba'swesternborderisformedbytheOswegoRiver.Atthetown'scorporate limits,theOswegoRiverdrainsanareaof5,096squaremiles.WineCreekoriginates inthesouthwestern sectionofScribaandflowsnorththroughtheCityofOswegobeforeemptyingintoLakeOntario.Ithasadrainageareaof1-8squaremiles.WalkerCreekoriginates tothenortheast oftheHallRoad-JohnsonRoadintersection andflowsnorthwest throughthetownbeforeemptyingintoLakeOntario.WalkerCreekhasadrainageareaof3.9squaremilesLycomingCreekisamajordrainagesource,anddrainsanareaof6.8squaremilesinnortheast Scriba.Itflowsgenerally northfromtheHamletofLycomingtoitsmouthatLakeOntarioinSunsetBay.CliffRoadCreek,whichoriginates southeast oftheNorthRoad-CreameryRoadintersection innorth-central Scriba,hasadrainageareaof1.9squaremilesatitsmouthatLakeOntario.LakeviewCreekflowsnorthtoemptyintoLakeOntarioattheHamletofLakeview.

Ithasadrainageareaof4.0squaremiles.WalkerCreekTributary originates incentralScribaandflowsnorthwest toitsconfluence withWalkerCreek.AshortsegmentofLakeCreekflowsthroughScribabeforeenteringtheCityofOswego,whereitemptiesintoLakeOntario.DeerRidgeCreekTributary flowsnorthwest throughsouth-westScribabeforejoiningDeerRidgeCreek,whichalsoflowsnorthwest throughthetowntoreachitsconfluence withtheOswegoRiver.BlackCreekTributaries 7,8and9flowsouthtotheirrespective confluences withBlackCreekinsouthcentralScriba.PaddyCreek,PaddyPondTributary, CrooksCreek,CrooksPondTributary, MudPondCreek,CrooksPondandPaddyPondarealllocatedinthesoutheast cornerofthetown-I,Theregion'sclimateisclassified ashumidcontinentals Prevailing westerlywindsthatblowacrossthefulllengthofLakeOntarioaffectthetemperature inbothsummerandwinter,withtheexclusion ofperiodswhenthelake'ssurfaceisfrozen.Theicecausesthedelayofwarmweatherinthespring.Autumnisarelatively warmseason;however,wintersaresevereduetoalargefrequency ofstormsandcoldwaves(Reference 4)~Scribaissubjecttowhatisknownasthe"lakeeffect",duetoitscloseproximity toLakeOntario.Becausethelakeisalargebodyofwater,itrespondsslowlytochangesintemperature.

Whencoldairarrivesinthewinter,thelakewatersarestillrelatively warm,whileintheearlysummer,thelakeremainsquitecool.Eachwinterthelakeeffectisthecauseofmanyheavysnowsqualls.ThesesquallscontinuewellintoFebruary, sincemuchofthelakesurfacedoesnotfreezethroughout theearlywintermonths.Themeanmonthlytemperature

forScribaisapproximately 24.5degreesFahrenheit (4F)inJanuaryandapproximately 69.5FinJuly.Themeanannualrainfallisapproximately 34.5inches,andthemeanannualsnowfallisapproximately 85inches(Reference 4).2.3Principal FloodProblemsThereareseveralareassubjecttofloodingwithintheTownofScriba.AlongWineCreek,floodinghasoccurredatTownLineRoadandalongthemuckfarmsbordering thecreek.Znthepast,WalkerCreekhasovertopped CreameryRoadandLycomingCreekhasovertopped LycomingRoad.Manyofthecottagesbordering LakeOntariohavealsobeeninundated.

The'otential 100-yearfloodlevelofWalkerCreekattheupstreamfaceoftheCreameryRoadBridgeisshowninFigure2.~6~gl00YEARFLOOD~AFigure2-Thepotential 100-yearfloodlevelforWalkerCreekattheupstreamfaceoftheCreameryRoadBridge,facingwest.Anhistorical stormoccurredinJune1972,asTropicalStormAgnespassedthroughtheOswegoRiverbasin.Althoughmanycommunities withintheareareceivedrecordamountsofrainfall, floodinganditsresultant damageswereminimalinScriba(Reference 5).ZnMarch1973,however,seriousfloodingandaccompanying soilerosionoccurredalongLakeOntario,damagingnearly$2.2millionworthofpropertyalongitsshore-lineinOswegoCounty(Reference 6)~Additional floodingoccurredinJanuary1978,whenanicejamontheOswegoRiverintheTownofVolneyfloodedhomesinnearbyScriba.

FloodingalongLakeOntarioisaffectedbythreecategories oflakelevelfluctuations:

long-term, seasonalandshort-period.

Longtermfluctu-ationsarecausedprimarily byanincreaseordecreaseofprecipitation overthelake.Shoreline floodingalsooccurswhenconsecutive annualrainfalls arehigherthanthemeanannualprecipitation.

Thetimeinter-valsbetweensuccessive high-water periodsareofirregular lengthandcansometimes causeabruptincreases inthelakelevel.Thisstudyisprimarily concerned withlong-term fluctuations incombination withseasonalandshort-period variations ofthelakelevels.Znaccordance withseasonalfluctuations, highlakelevelsonLakeOntariogenerally occurinthespring,whenrun-offincreases duetosnowmelt, lowratesofevaporation fromthelakeandevapotranspiration fromthelandsurface.Short-period fluctuations of,lakelevelscanbecausedbywindblowingoverthelake.Thiswinddrivessurfacewateringreatvolumestowardtheshore,thusraisingthewaterlevelatonesideofthelakewhileloweringthewaterlevelattheotherside.Theeffectofthiswindset-upismorepronounced inbayswheretherisingwaterisconcentrated inarestricted spacewithintheshoresofthebay.OutflowfromLakeOntarioisregulated byapowerhouse anddamatBarnhartZsland,NewYork.Thelakeiscontrolled according toplan"1958-D",

whichtriestoanticipate highandlowwaterlevelsaccording toseasonalfluctuations.

Large,long-term fluctuations ofthelakesometimes makeitdifficult tomaintainthedesiredrangeoflakelevels.Duetotherelationship ofthelargelakeareatothelimiteddischarge capabilities ofoutflowstreams,floodlevelsonthelakepersistforaconsiderable timeafterthefactorscausingthehighlevelsareremoved(Reference 7).TheZnternational JointCommission (ZJC)haspublished areport,FurthercausesforGreatlakelevelsfluctuation, theresultsofgresentregulation, andinvestigates thefeasibility ofalternate possibleregulation plans(Reference 8).Thisreportstatesthattheeffectsofshoreline erosion,acontinuous process,aremostpronounced duringperiodsofhighwater.Hence,decisions concerning futureregulat'on willhaveaneffectontheLakeOntarioshoreline erosionproblemsexistingintheTownofScriba.2e4FloodProtection MeasuresTheonlyfloodprotection structures withintheTownofScribaareindividual seawallsconstructed alongLakeOntarioatvariouscottagesintheattempttoorotectagainsterosion.TheScribaTownBoardhasalsoenactedanordinance whichregulates construction infloodhazardareasdesignated ontheFloodHazardBoundaryMapfortheTownofScriba(References 9and10).Nootherfloodprotection measuesareemployedinScriba.

3~0ENGINEERING METHODSPorthefloodingsourcesstudiedindetailinthecommunity, standardhydrologic andhydraulic studymethodswereused'o'etermine thefloodhazarddataforthisstudy.Floodeventsofamagnitude whichareexpectedtobeequalledorexceededonceontheaverageduringany10-,50-,100-,or500-yearperiod(recurrence interval) havebeenselectedashavingspecialsignificance forfloodplainmanagement andforfloodinsurance premiumrates-Theseevents,commonlytermedthe10-,50-,100-,and500-yearfloods,haveaI10-,2-,1-,and0~2-percent chance,respectively, ofbeingequalledorexceededduringanyyear.Althoughtherecurrence intervalrepresents theiong-term

~overseperiodbetweendloodsodaspecificmagnitude, raredloodscouldoccuratshortintervals orevenwithinthesameyear.Theriskofexperiencing ararefloodincreases whenperiodsgreaterthanoneyearareconsidered.

Porexample,theriskofhavingafloodwhichequalsorexceedsthe100-yearflood(one-percent chanceofannualoccurrence) inany50-yearperiodisabout40percent(fourin,ten)and,forany90-yearperiod,theriskincreases toabout60percent(sixinten).Theanalysesreportedherereflectfloodingpotentials, basedonconditions existinginthecommunity atthetimeofcompletion ofthisstudy.Mapsandfloodelevations willbeamendedperiodically toreflectfuturechanges.3.1Hydrologic AnalysesHydrologic analyseswerecarriedouttoestablish thepeakdischarge-frequency relationships forfloodsoftheselectedrecurrence intervals foreachfloodingsourcestudiedindetailaffecting thecommunity.

Thepeakdischarge-frequency relationship fortheOswegoRiverwasdetermined byastatistical analysisofthedischarge recordsofUSGSgagingstationNo.04249000, locatedatLockNo.7,Oswego,NewYorkTheanalysiswasperformed with39yearsofrecordusingthestandardlog-PearsonTypeZIImethodasoutlinedbytheWaterResources Council(Reference 11).Theseresultswerethencomparedtothedischarges developed bytheUSGSfortheFloodInsurance StudyfortheCityofOswego(Reference 12).Sincethesepreviously developed discharges fellwithinthe50percentconfidence intervalofthemorerecentestimates, theformerhavebeenadoptedasthebasisoftheproposeddischarges fortheFloodInsurance StudyfortheTownofScriba.Thepeakdischarges forWineCreekwereadoptedfromtheFloodInsurance StudyfortheCityofOswegoandadjustedbasedonreduction indrainagearea(Reference 12)~Znthisstudy,flood-frequency relationships forWineCreekweredeveloped byaveraging theresultsfromtherainfallfrequency-runoff relationships developed bythe,SCS,andtheresultsfromthemethoddeveloped bytheUSGS,WaterResources

Division, NewJerseyDistrict(References 13and14)~Thismethodrelatespeakflooddischarge todrainagebasinsize,channelslope,surfacestoragewithinthebasin,andanindexofmanmadeimpervious cover.

ForHarborBrook,peakdischarges werealsoadoptedfromtheFloodInsurance StudyfortheCityofOswego(Reference 12).TheSCSrainfallfrequency-runoff relationship wasusedtodetermine thedischarges, andextendsthroughthe100-yearreturnperiod.The500-yearreturnperiodwasdetermined byastraightlineextrapolation.

Reduction fromupstreamstoragewasnotconsidered.

Peakdischarges forWalkerCreekweredeveloped usingthemethodology oftheFederalHighwayAdministration's (FHWA)RunoffEstimates forSmallRuralWatersheds andcheckedbytheSCS'smethod(References 15and13).Thepeakdischarges forLycomingCreekweredeveloped usingtheUSGSRegionalWaterSupplyPaper1677,andcheckedbytheFHWA'srunoffestimates.

(References 16and15)~Thepeakdischarges forCliffRoadCreekandLakeviewCreekweredeveloped usingthemethodology oftheBureauofPublicRoadspeakRatesofRunofffromSmallWatetsheds, andcheckedbythePRWAmethod(References 17and15).Asummaryofdrainagearea-peak discharge relationships forthestreamsstudiedbydetailedmethodsisshowninTable1,"SummaryofDischarges".

TABLE1-SUMMARYOFDISCHARGES DRAINAGEAREAPEAKDISCHARGES (cfs)FLOODINGSOURCEANDLOCATION(sa.miles)10-YEAR50-YEAR100-YEAR500-YEAROSWEGORIVERAttheTownofScribacorporate limits5,096m028P57035f46538f46045P455WINECREEKAttheTownofScribacorporate limits1~8400540600800WALKERCREEKAtconfluence withLakeOntario3~93806407401,000LYCOMZNGCREEKAtconfluence withLake.Ontario6.87451,0301,1501,330CLIFFROADCREEKAtconfluence withLakeOntario1.9275400455~595

TABLE1-SUMMARYOFDXSCHARGES

-continued DRAINAGEAREAPEAKDISCHARGES (cfs)LA1Q~VIEW CREEKAtconfluence withLakeOntario4'4707008101,090HARBORBROOKApproximately 12,040feetaboveconfluence withLakeOntario0'29044048,0560Analyseswerecarriedouttoestablish thepeakelevation-frequency relationships forfloodsoftheselectedrecurrence intervals fortheportionofLakeOntariostudiedindetailaffecting thecommunity-Analysesofelevations ofLakeOntariowerebasedonrecordsforthelakegagesatRochester, NewYork(19years),Oswego,NewYork(40years)andCapeVincent,NewYork(58years),aswellasthoseatPortWeller(45years),Toronto(60years),Cobourg.(18 years)andKingston(63years),ontheCanadianside.Xn1977,theCOEdetermined the10-,50-,100-and500-yearfloodlevelsfor5reachesalongtheUnitedStatesshoreline ofLakeOntario(Reference 18).Theselevelsarebaseduponfrequency curvesderivedfromtheannualmaximumfloodlevelsrecordedateachpreviously mentioned gagesite,andadjustedtoreflectpresentdiversion andoutletconditions.

Comparison ofthesefloodlevelswiththoseusedincompleted FloodInsurance Studiesinnearbycommunities resultedinnosignificant difference.

Therefore, theCOE'sfloodlevelswereadoptedforuseinthisstudy.Asummaryofelevation-frequency relationships forthesectionofLakeOntariostudiedbydetailedmethodsisshowninTable2,"SummaryofElevations"

~TABLE2-SUMMARYOFELEVATXONS ELEVATION (feet)FLOODINGSOURCEANDLOCATION10-YEAR50-YEAR100-YEAR500-YEARLAKEONTARIOEntireshoreline withintheTownofScriba248~7249.2249.42490810

'I~

Thestormsurgeelevations forthe10-,50-,100-,and500-yearfloodshavebeendetermined forLakeOntario.Theanalysesreportedhereinreflectthestillwaterelevations duetotidalandwindsetupeffects,butdonotincludethecontxibutions fromwaveactioneffectssuchasthewavecrestheightandwaverunup.Nonetheless, thisadditional hazardduetowaveactioneffectsshouldbeconsidered intheplanningoffuturedevelopment.

3~2Hydraulic AnalysesAnalysesofthehydraulic characteristics ofthefloodingsourcesstudiedindetailwerecarriedouttoprovideestimates oftheelevations offloodsoftheselectedrecurrence intervals alongeachofthesefloodingsources.Crosssectionsofoverbankareasforthebackwater analysesoftheOswegoRiver,WineCreek,WalkerCreek,LycomingCreek,CliffRoadCreekLakeviewCreekandHarborBrookwereobtainedbyphotogrammetric methodsrthebelow-water sectionswereobtainedbyfieldmeasurement.

Allbridges,damsandculvertsweresurveyedtoobtainelevation dataandstructural geometry.

Crosssectionswerelocatedatcloseintervals aboveandbelowbridgesandculvertsinordertocompute.thesignificant backwater effectsofthesestructures.

Channelroughness coefficients (Manning's "n")usedinthehydraulic computations werechosenbyengineering judgement andwerebasedonfieldobservations

-ofthestream'schannelandfloodplainareasRoughness valuesforthemainchanneloftheOswegoRiverrangedfrom0.035to0.~060andtheoverbankvaluesrangedfrom0.10to0.15.Roughness valuesforthemainchannelofWineCreekrangedfrom0~024to0.050andtheoverbankvaluesrangedfrom0~05to0.10.ForWalkerCreek,theroughness valuesforthemainchannelrangedfxom0.028to0.120,andtheoverbankvaluesrangedfrom0~07to0.25.LycomingCreekroughness valuesrangedfrom0.03to0.10forthemainchannelandfrom0.07to0.25fortheoverbankareas.-CliffRoadCreekroughness valuesxangedfrom0.035to0.120forthemainchannelandfrom0.07to0.25fortheovexbanks

~Roughness valuesforthemainchannelofLakeviewCreekrangedrom0.03to0.08andtheovexbankvaluesrangedfrom0-09to020~Mater-surface elevations forfloodsoftheselectedrecurrence intervals werecomputedthroughtheuseoftheCOEHEC-2step-backwater computerprogram(Reference 19)~Startingwater-surface elevations fortheOswegoRiver,WineCreek,andHarborBrookweretakenfromtheFloodInsurance StudyfortheadjacentCityofOswegoattheOswego/Scriba corporate limits(Reference 12).Startingwater-surface elevations forWalker11, 0

Creek,LycomingCreek,CliffRoadCreekandLakeviewCreekweredetermined bytheslope/area method.PorWalkerCreek,thestartingwater-surface elevations determined bythesemethodsweredeveloped atcrosssectionsdownstream ofthelimitsofthestudy.Thecomputedwater-surface profilethroughthesedownstream reachesconverged tothetrueelevation atthefirstcrosssectionatthebeginning ofthedetailedstudylimitsFloodprofilesweredrawnshowingcomputedwater-surface elevations toanaccuracyof0.5footforfloodsoftheselectedrecurrence intervals.

PorHarborBrook,floodprofileswereadoptedfromtheCityofOswegoFloodInsurance Study(Reference 12).Locations ofselectedcrosssectionsusedinthehydraulic analysesareshownontheFloodprofiles(Exhibit1).Forstreamsegmentsforwhichafloodwayiscomputed(Section4.2),selectedcross-section locations arealsoshownontheFloodBoundaryandFloodwayMap(Exhibit3).Allelevations usedinthisstudyarereferenced totheNationalGeodeticVerticalDatumof1929(NGVD),formerlyreferredtoasSeaLevelDatumof1929.Locations oftheelevation reference marksusedinthestudyareshownonthemaps.Thehydraulic analysesforthisstudyarebasedontheeffectsofunob-structedflow.Thefloodelevations shownontheprofilesarevalidonlyifhydraulic structures remainunobstructed anddonotfailFloodinformation forLakeviewCreekTributaries 1and2,DeerRidgeCreek,DeerRidgeCreekTributary andtheremainder ofWineCreekstudiedbyapproximate methods,wasobtainedbyuseoftheSCSrunoffcurvesandthehydrology andflooddepthresultsofcertaindetailedfloodingsources(Reference 13)~Flooddepthswerethendetermined bynormalslope/area methodsusingManning's

equation, andbyculvertandbridgeflowcapacityanalysesat,crossings.

Floodinformation fortheremaining streamsandtributaries studiedbyapproximate methodswasobtainedfromthePIAFloodHazardBoundaryMapfortheTownofScriba(Reference 10).4~0PLOODPLAINMANAGEMENT APPLICATIONS TheNationalFloodInsurance Programencourages stateandlocalgovernments toadoptsoundfloodplainmanagement programs.

Therefore, eachFloodInsurance Studyincludesafloodboundarymapdesignedtoassistcommunities indevel-opingsoundfloodplainmanagement measures.

12

4.1FloodBoundaries Inordertoprovideanationalstandardwithoutregionaldiscrimination, the100-yearfloodhasbeenadoptedbytheFEHAasthebasefloodforpur-posesoffloodplainmanagement measures.

The500-yearfloodisemployedtoindicateadditional areasoffloodriskinthecommunity.

PortheLakeOntarioshoreline studiedindetail,theboundaries ofthe100-and500-yearfloodlevelshavebeendelineated usingthestormwaterelevations.

Thetopographic mapsusedtodelineate lakefloodingwereeitherpreparedfromaerialphotography atascaleof1:4,800withacontourintervalof5feetorwereUSGStopographic mapsatascaleof1:24,000withacontourintervalof10feet(References 20and21).Foreachstreamstudiedindetail,theboundaries ofthe100>>and500-yearfloodshavebeendelineated usingthefloodelevations determined ateachcrosssection;betweencrosssections, theboundaries wereinterpolated usingtopographic mapspreparedfromaerialphotographs atascaleof1:4,800withacontourintervalof5feet(Reference 20)~Incaseswherethe100-and500-yearfloodboundaries areclosetogether, onlythe100-yearboundaryhasbeenshown.Floodboundaries forLakeviewCreekTributaries 1and2,DeerRidgeCreek,DeerRidgeCreekTributary andtheremainder ofWineCreekstudiedbyapproximate methodswereplottedonUSGStopographic maps(Reference 21)~Floodboundaries forthesestreamswerefurtherverifiedbyexamination ofaerialphotographs orfieldinspection.

Floodboundaries forthe'remaining streamsandtributaries studiedbyapproximate methodsweretransferred toUSGSmapsfromtheFloodHazardBoundaryMapsfortheTownofScriba(Reference 10).TheareaeastofLycomingRoadatLycomingCreekhasbeenclassified asadivergent flowarea.Surcharging flowatthesoutherncrossingofLycomingRoadwouldshortcircutandflowatundetermined depthsalongtheeasternsideofLycomingRoadtowhereitentersLycomingCreekagainjustdownstream ofthenortherncrossingofLycomingRoad.Sincethedepthofthisfloodingisprobablylessthanonefoot,theareahasbeendesignated ZoneB.Theboundaries ofthe100-and500-yearfloodsareshownontheFloodBoundaryandPloodwayMap(Exhibit3).Smallareaswithinthefloodboundaries maylieabovethefloodelevations and,therefore, maynotbesubjecttoflooding.

Owingtolimitations ofthemapscaleandlackofdetailedtopographic data,suchareasarenotshown.4o2Ploodways Encroachment onfloodplains,suchasartificial fill,reducestheflood-carrying

capacity, increases thefloodheightsofstreams,and13

increases floodhazardsinareasbeyondtheencroachment itself.Oneaspectoffloodplainmanagement involvesbalancing theeconomicgainfromfloodplaindevelopment againsttheresulting increaseinfloodhazard.ForpurposesoftheFloodInsurance Program,theconceptofafloodwayisusedasatooltoassistlocalcommunities inthisaspectoffloodplainmanagement.

Underthisconcept,theareaofthe100-yearfloodisdividedintoafloodwayandafloodwayfringe.Thefloodwayisthechannelofastreamplusanyadjacentfloodplainareasthatmustbekeptfreeofencroachment inorderthatthe100-yearfloodcanbecarriedwithoutsubstantial increases infloodheights.Minimumstandards oftheFEMAlimitsuchincreases infloodheightsto1.0foot,providedthathazardous velocities arenotproduced.

Thefloodways inthisreportarepresented tolocalagenciesasminimumstandards thatcanbeadoptedorthatcanbeusedasabasisforadditional studies.Thefloodways presented inthisstudywerecomputedonthebasisofecpxalconveyance reduction fromeachsideofthefloodplains.Theresultsofthesecomputations aretabulated atselectedcrosssectionsforeachstreamsegmentforwhichafloodwayiscomputed(Table3)AsshownontheFloodBoundaryandFloodwayMap(Exhibit3),thefloodwaywidthsweredetermined atcrosssections; betweencrosssections, theboundaries wereinterpolated.

Incaseswheretheboundaries oftheflood-wayandthe100-yearfloodareeitherclosetogetherorcollinear, onlythefloodwayboundaryhasbeenshown.PortionsofthefloodwaywidthsfortheOswegoRiverextendbeyondthecorporate limits.Theareabetweenthefloodwayandtheboundaryofthe100-yearfloodistermedthefl'oodway.

fringe.Thefloodwayfringethusencompasses theportionofthefloodplainthatcouldbecompletely obstructed withoutincreasing thewater-surface elevation ofthe100-yearfloodbymorethan1.0footatanypoint.Typicalrelationships betweenthefloodwayandthefloodwayfringeandtheirsignificance tofloodplaindevelopment areshowninFigure3.5~0INSURANCE APPLICATION Inordertoestablish actuarial insurance rates,theFEMAhasdeveloped apro-cesstotransform thedatafromtheengineering studyintofloodinsurance criteria.

Thisprocessincludesthed'etermination ofreaches,FloodHazardFactors(FHFs),andfloodinsurance zonedesignations foreachfloodingsourceaffecting theTownofScriba.5~1ReachDeterminations Reachesaredefinedaslengthsofwatercourses havingrelatively thesamefloodhazard,basedontheaverageweighteddifference inwater-surface 14 l

FLOODINGSOURCEFLOODWAYBASEFLOODWATERSURFACEELEVATION CROSSSECTIONDISTANCEWIDTH(FT.)SECTIONAREA(SO.FT.)MEANVELOCITY(F.P.S.)REGULATORY FLOODWAYWITHFLOODWAY(NGVD)INCREASE(FEET)OswegoRiverAAABACADAEAF16,050118,O1O'0, 280122,490124760125,620147635023779366434983486313,79213,53015,84511,9589,7279,183272.82~432394~1296+7296'297'297'297'297.8296~7296~8297~0297~2297~6297'296~7296'297'297.2297'297'0.00.00~00~00~00~0(/ineCreek8CDEH802620297021,6902,11022,38522,54523;13023,2852492193873550329239374581,6981,3383084102945563433321~30~30'1~9142'1~01~71~8343~134313431343.1343.1343~1343'343'343+7343~1343~1343~1343~1343~1343~13437343'343'3431343~1343~1343~13232343'34373438343~80~00~00~00~0010.10~0010~1Feetaboveconfluence withLakeOntarioFeetabovecorporate limitsThiswidthextendsbeyondcorporate limitsFEDERALEMERGENCY MANAGEMENT AGENCYTOINOFSGRIBA,NY;(oswEGoco.)FLOODWAYDATAOSWEGORIVERANDWINECREEK

FLOODINGSOURCEFLOODWAYBASEFLOODWATERSURFACEELEVATION CROSSSECTIONDISTANCEWIDTH(FT.)SECTIONAREA(SQ.FT.)MEANVELOCITY(F.P.S.)REGULATORY (NGVD)WITHOUTFLOODWAY(NGVD)WITHFLOODWAY(NGVD)INCREASE(FEET)WineCreek(Continued)

JKL3,75513,92514,6051293338722792,9757,2862~10~20~0343.7345~1345~1343~7345~1345~1343.9345~234520~2p.10~1WalkerCreekABCDEFGHIJKLM15,030215,310216i470217,320217,965218,450218,885219,050219,42021977P19945220i150220,300240152201425510735200918513923128284791705952373471149593293945151001,1922~5Oi910~51~23.1.2~1640.72~21~81~47~30~6342~0324~0329.5334.0335.4337~7340~1342.2342'345'346~1346~3354'342'324'329'334'335.4337.7340~13422342'345'34613463354'3420324~1329.8334.9336~1338'340'34323432346~8347~0347.3354'0~00.1Oi309070.90.61~01~00'0'0~90.21Feetabovecorporate limitsFeetaboveconfluence withLakeOntarioFEDERALEMERGENCY MANAGEMENT AGENCY'OIHOFSCHtBA,NY.;.(oswEGoco.)Ft.000NAY OATAWINECREEKANDWALKERCREEK

FLOODINGSOURCEFLOODWAYBASEFLOODWATERSURFACEELEVATION CROSSSECTION1DISTANCEWIDTHIFT.)SECTIONAREA{SQ.FT.)MEANVELOCITY(F.P.S.)WITHOUTWITH(NGVVA)FLOODWAY"FLOODWAY{NGVD)(NGVD)INCREASE{FEET)LycomingCreekABCDEFGHIJKLMN0PQRS7609151,6102,4602,8303,2803,8704,1104,6154,7605i2405,9506,3606,8057,5457,9958,1358,3808,74047151104619913066162402745593964737878874042842366361859476752194315923558601382i0033,4372,6383,3104,7345,4291,9551,9671,9225,0756+21~21~75.22'1~93~21~38+30'0~30~40~30~2020~50~50~50~2256~2260~4260~6261~0263'264'265'265'266'277'277'277~2277'277~2277'277.3281~7281~7281~7256'260+4260'261~0263'264'265'265.5266'277'277~2277.2277'277'277~3277~3281~72817281~7256~2260o4260~6261~2263~4265~0,266~0266.3267'277~2277~22772277'2772277~3277~3281~7281~7281070'0'0'0'0.40'0'0~80~50~00~00~00~00~00~00~00~00~00~01Feetaboveconfluence withLakeOntarioFEDERALEMERGENCY MANAGEMENT AGENCYTOWNOFSCRlBA,-NY

-'oswEGo co.).FLOODIAYDATALYCOMINGCREEK'.

CROSSSECTIONDISTANCE1FLOODINGSOURCEWIDTH{FT.)FLOODWAYSECTIONAREA(SQ.FT.)MEANVELOCITY(F.P.S.)REGULATORY (NGVD)WITHFJ.OODWAY (NGVD)WITHOUTFLOODWAY{NGVD)BASEFLOODWATERSURFACEELEVATION INCREASE(FEET)LycomingCreek(Continued)

TUVWXYZAAABACADAEAFAGAHAIAJAK9,1609,62010,38010,54010,86011,26011,96012,20513,23513,885.14,59515,29515,97516,37516,55517,04517,35517,51557012070222107396851446114058435791254821371291832t6144764441,6168061642,3036933216022t8312,2876281464,4356185421i306042.4250'1469041.63~51~9040'1~87'0'1~82~0.8281~7281~7284.6287'287~7288~3295.4296'305~1312~23147316.6317~53175323~53237323.93292281~7281.7284+6287~4287'288e3295'296'305~1312~2314~7316+6317~5317~5323'323~7323'329'2817281~7285~1287'2881289'296~1297'305'312~2315~23275318.4318~53235323'324'329.2000.00.50~3040~90~70~90.80'0.50'0'100'0~10'00il"Feetaboveconfluence withLakeOntarioFEDERALEMERGENCY MANAGEMENT AGENCYTOWN.OFSCBIBA,NY(oswEeoca.)----.FLOODWAY.DATA.LYCOMING CREEK

FLOODINGSOURCEFLOODWAYBASEFLOODWATERSURFACEELEVATION CROSSSECTIONDISTANCE1WIDTHIFT.)SECTIONAREAISO.FT.)MEANVELOCITYIF.P.S.)REGULATORY FLOODWAYWITHFLOODWAYINGVD)INCREASE{FEET)CliffRoadCreeABCDEFGHIJKLMN0PQRS3451,1251,5901,9702,5252,9253,0403,2203,4203,7204,0904,3754,5254,7805,0305,1605,4105,5806,090225366264714385462169182302313450239220241154140410118268735491811135391,7287016696769141,6469511,2429394074631,3363~81~6610'2.53'0'0'0'0'0'0'0'0~40'0.41~10~90'249+9253.9259+1263~8265'270'276~2277'277'277'277'277'277'277+6277'277+6277'277'277~7249'253~92591263.8265.9270~8276'277'277'277'277.5277'277'277'277'277'277'277'2777249'253'259~1263~9266~7271~7276~2277+4277'277'277'277'277~7277'277.7277~7277'277'277F90'0'0~00~10'0'0'0+0000'0.10.1Oo10~10.10~10~10~20~21Feetaboveconfluence withLakeOntarioFEDERALEMERGENCY MANAGEMENT AGENCYTOWNOFSCBIBA.NY(ose~eoco.)FLOODWAYDATACL)'FFROADCREEK

FLOODINGSOURCEFLOODWAYBASEFLOODWATERSURFACEELEVATION CROSSSECTIONDISTANCE1WIDTHIFT.)SECTIONAREAISO.FT.)MEANVELOCITY(F.P.S.)WITHOUTREGULATORY FLOODWAYINGVD)INGVD)WITHFLOODWAYINGVD)INCREASEIFEET)CliffRoadCreek(Continued)

TUVWXYM6,5306,9007,1907,9708,6009,1309,3559i620721087076473160721102793191651431492532574~11~61.42~73~13'1.71~7278~7283.92847287'296.4301.3302.73038278'283'2847287'296.4301~3302'303'278+7284.1285~0288~1296.4302'303'304'0~00420~00'0.00.70.70~7LakeviewCreekABCDEF2553757551,2251,9402,330841076635243563006062871359332472'132~85~90~83~2249.0253,92540259~1261~7262'246~02253~9254'259~1261~7262424900254'2548259'262'263'0.00~80~8Oe70.70.8Feetaboveconfluence withLakeOntarioElevations computedwithoutconsideration ofbackwater effectsfromLakeOntarioFEDERALEMERGENCY MANAGEMENT AGENCYTOWNOFSCRIBA,NY(osweeoco.)-FlOODIAYDATA.CLIF.F.ROAD GREEKANDLAKEVIEWCREEK

100YEARFLOODPLAINFLOODWAYFRINGEFLOODWAYFLOODWAYFRINGESTREAMCHANNKLFLOODELEVATCONFINEDWlIONWHENTHINFLOODWAYENCROACHMENT ENCROACHMENT

,cg~<.,ps').

gSURCHARGE~

'Vg0TI>,@44~@j(4PY".>4L~>kP>i8AREAOFFLOODPLAINTHATCOULDSEUSEDFORDEVELOPMENT 8YRAISINGGROUNDFLOODELEVATION EEFOREENCROACHMENT ONFLOODPLAINLINEA~8ISTHEFLOODELEVATION BEFOREENCROACHMENT LINEC~DISTHEFLOODELEVATION AFTERENCROACHMENT

~SURCHARGE NOTTOEXCEED10FOOTIFEMAREOUIREMENTI ORLESSERAMOUNTIFSPECIFIED 8YSTATE.FLOOOWAYSCHEMATIC elevations betweenthe10-and100-yearfloods.Thisdifference doesnothaveavariation greaterthanthatindicated inthefollowing tableformorethan20percentofthereach.AverageDifference Between10-and100-YearFloodsVariation Lessthan2feet2to7feet7.1to12feetNorethan12feet0.5foot1~0foot2.0feet3.0feetThelocations ofthereachesdetermined forthefloodingsourcesoftheTownofScribaareshownontheFloodProfiles(Exhibit1)andaresummarized intheFloodInsurance ZoneDataTable(Table4).21 0

FLOODINOSOURCEPANEL{10YR.){50YR.)0.2%I500YR.)ELEVATION DIFFERENCE BETWEEN1A%(100-YEAR)

FLOODANDFHF20NEBASEFLOOD3ELEVATION INGVD)LakeOntarioReach1-0'-0~2+0.4005249OswegoRiverReach110-1~8-0~7+1~0020VariesWineCreekReach110-1~2-0'+0'010VariesWalkerCreekReach1Reach2Reach3050505-2~0-2'-1~1-0~1-0'-0'+03+1.8+0'020025010A4A5A2VariesVariesVariesLycomingCreekReach1Reach2Reach3'50505-1~3-2'-1~2-0'-0'-0'+0'+F8+0.5015025010A3A5A2VariesVariesVariesFloodInsurance RateMapPanelWeightedAverageRoundedtothenearestfoot-seemapFEDERALEMERGENCY MANAGEMENT AGENCY,.TBNNBFSCRIBA,NY(OSWEGOCO.)--,FLOOD)NSORANCF.

ZONEDATALAKEONTARIO;OSWEGORIVER,WINECREEK,WALKERCREEKANDLYCOMINGCREEK

FLOODINGSOURCEPANEL101C(10YR.)(60YR.)0~(600YR.)ELEVATION DIFFERENCE BETWEEN1.0%(100-YEAR)

FLOODANDFHFZONEBASEFLOODSELEVATION (NGVD)'liffRoadCreekReach1Reach2Reach3Reach405050505-1~1-0.5-1+8-0.8-0~3-0.2-0.2-0~2+0.6+0'+0'+0'010005020010A2A1A4A2VariesVariesVariesVariesLakeviewCreekReach105-100'+0'010VariesHarborBrookReach1<10-0'0'+0'005A1VariesFloodInsurance RateHapPanelWeightedAverageRoundedtothenearestfoot-seemapFEDERALEMERGENCY MANAGEMENT AGENCYTOINOFBCBIBA.IIY(oswEGoco.)FLOODINSURANCE ZONEDATACLIFFROADCREEKLAKEVkEWCREEKAQDHARBOhBR00

Znlacustrine areas,reachesarelimitedtothedistanceforwhichthedifference betweenthe10-and100-yearfloodelevations doesnotvarymorethan1.0foot.Usingthesecriteria, theLakeOntarioshoreline qualifies asonereach.ThelocationofthisreachisshownontheFloodInsurance RateMap5.2FloodHazardPactorsThePHPistheFEMAdeviceusedtocorrelate floodinformation withinsur-anceratetables.Correlations betweenpropertydamagefromfloodsandtheirPHFsareusedtosetactuarial insurance premiumratetablesbasedonFHFsfrom005to200.TheFHFforareachistheaverageweighteddifference betweenthe10-and100-yearfloodwater-surface elevations expressed tothenearest0.5foot,andshownasathreeMigit code.Forexample,ifthedifference betweenwater-surface elevations ofthe10-and100-yearfloodsis0.7foot,theFHPis005;ifthedifference is1.4feet,theFHPis015;ifthedifference-is5.0feet,thePHPis050.Nhenthedifference betweenthe10-and100-yearwater-surface elevations isgreaterthan10~0feet,accuracyfortheFHPistothenearestfoot.5.3FloodXnsurance ZonesAfterthedetermination ofreachesandtheirrespective FHFs,theentireincorporated areaoftheTownofScribawasdividedintozones,eachhavingaspecificfloodpotential orhazard.,Eachzonewasassignedoneofthefollowing floodinsurance zonedesignations:

ZoneA:SpecialFloodHazardAreasinundated bythe100-yearflood,determined byapproximate methodssnobasefloodelevations shownorPHPsdetermined.

ZoneA1,A2,A3,SpecialFloodHazardAreasinundated bythe100-yearA4andASflood,determined bydetailedmethods;basefloodele-vationsshown,andzonessubdivided according toFHF.ZoneB:AreasbetweentheSpecialFloodHazardAreaandthelimitsofthe500-yearflood,including areasofthe500-yearfloodplainthatareprotected fromthe100-yearfloodbydike,levee,orotherwatercontrolstructure; also,areassubjecttocertaintypesof100-yearshallowfloodingwheredepthsarelessthan1'foot;andareassubjectto100-yearfloodingfromsourceswithdrainageareaslessthan1squaremile.ZoneBisnotsubdivided.

ZoneC:Areasofminimalflooding.

Table4,"FloodInsurance ZoneData,"summarizes thefloodelevation dif-ferences, FHFs,'flood insurance zones,andbaseflood,elevations forthefloodingsourcesstudiedindetailintheTownofScriba.5.4FloodInsurance RateMapDescription TheFloodInsurance RateMapfortheTownofScribais,forinsurance

purposes, theprincipal resultoftheFloodInsurance Study.Thismap(published separately) containstheofficialdelineation offloodinsurance zonesandbasefloodelevation lines.Basefloodelevation linesshowthelocations oftheexpectedwhole-foot water-surface elevations ofthebase(100-year) flood.Thismap"isdeveloped irraccordance withthelatestfloodinsurance mappreparation guidelines published bytheFEMA6o0OTHERSTUDIESFloodInsurance Studiesarecurrently beingpreparedfortheTownsofOswego,NewHaven,Volney,Granby,Schroeppel andLysanderandfortheCityofFulton(References 22,23,24,25,26,27and28).AFloodInsurance Studyhasalreadybeenpublished fortheCityofOswego(Reference 12)~Thedatapertaining toHarborBrookwereadoptedfromthisstudy.AllofthesestudieshaveanalyzedindetailportionsoftheOswegoRiver,withtheexception oftheTownofOswegoandtheTownofNewHavenstudies.Theresultsofthoseanalyseswillbefullycompatible withtheresultsofthisstudy.Znaddition, sincetheTownsofMinetto,Volney,andNewHavenandtheCityofOswegoarealladjacenttoScriba,thefloodboundaries, floodwaylimitsandfloodprofilesfortheirrespective studiesmustbereconciled.

Thefinalresultsofthesestudieswillmatchexactlywiththeresultsofthisstudy.Thisstudyisauthoritative forpurposesoftheFloodInsurance Program,andthedatapresented hereeithersupersede orarecompatible withpreviousdeter-minations-7.0LOCATIONOFDATASurvey,hydrologic, hydraulic, andotherpertinent datausedinthisstudycanbeobtainedbycontacting theofficeoftheInsurance andMitigation DivisionoftheFederalEmergency Management Agency,RegionalDirector, RegionIZOffice,26FederalPlaza,Room19-100,NewYork,NewYork10278.8o0BIBLIOGRAPHY ANDREPLACES1.U.SDepartment ofCommerce, BureauoftheCensus,1970CensusofOffice,Washington, D.C.,1971.25

2~OswegoCountyplanningBoard,~Osweo~CountData,Oswego,NewYork,1977'~OswegoCountyPlanningBoard,Wetlandsof0~seeo~Count,NewYork:Antn~ntornr and~analsis,Fulton,NewYork,May1973.4eU.S.Department ofCommerce, NationalOceanicandAtmospheric Administration, Climatography oftheUnitedStates,No.60-30,ClimatesoftheUnitedStates,NewYorkbyA.B.Pack,SilverSpring,Maryland, June1972~5.U.SArmyCorpsofEngineers, BuffaloDistrict~ReortofPloodf~TroicalStorm~A>es,June1972:~osweoRiverBasin,Buffalo,NewYork,August1973~6~St.Lawrence-Eastern OntarioCommission, LakeOntarioandtheSt.byDJPalm,Ph.DWFWatertown, NewYork,March1975.7e~aucrierandOntario,PlanSO-901,Detroit,Michigan, Septemher 1974~8~Ottawa,Quebec,Canada,'1976.9.TownofScriba,NewYorkTownBoard,Ordinance, "Protection ofConstruction inAreasSusceptible toFlood",TownofScriba,NewYorkf1978~10~U.S.Department ofHousingandUrbanDevelopment, FederalInsurance Adad.nistration, FloodNazardBo~~zor~Ma,Townofscriha~osweoC~ountNewYork,Washington, DCeFJuly19,197411~WaterResources Council,"Guidelines forDetermining FloodPlowFre-quency,"Bulletin17A,Washington, D.CMFJune1977.12~U.S.Department ofHousingandUrbanDevelopment, FederalInsurance Administration, pipedInsurance

~Stud,~Citof0~seeo,~Osweo~Count,NewYork,USGovernment PrintingOffice,Washington, D.C,May16F1977.13~U.S.Department ofAgriculture, SoilConservation Service,Technical Watersheds, Washington, DCFApril1973.14~StateofNewJersey,Department ofEnvironmental Protection, DivisionofWaterResources, incooperation withtheU.S.Geological Survey,SpecialReport30,~ccnitude and~Frecuenc ofFloodsinNewbernewithEffectsofUrbanization byStephenJ.Stankowski, Trenton,NewJersey,1974~26

15,U.S.Department ofCommerce, FederalHighwayAdministration, Runoff~~Estimates forSmallRuralWatersheds,washington, D.C.,October1977.16.U.SDepartment oftheZnterior, Geological Survey,Water-Supply Paper1677,~Manitudeand~Frex~encofFloodsintheUnitedStates,Part4.StLawrenceRiverBasinbyS.WWiitala,Washington, D.C.,1965~17.U.S.Department ofCommerce, BureauofPublicRoads,PeakRatesofRun-offfromSmallWatersheds, Washington, D.C.,October1977~18'SArmyCorpsofEngineers, DetroitDistrict,

~ReortonGreatLakesm'-'19.U.S.armyCorpsofEngineers, Hydrologic Engineering Center,HEC-2WaterSurfaceProfiles, Generalized

~Comter~ProramD,avis, California, October.1973.~Ma)~in,Scale1:4,800,ContourZnterval5Feet:TownofScriba,NewYork.U.S-Department oftheZnterior, Geological Survey,7.5MinuteSeriesNewYork,1956'swego East,NewYork,1954'exas, NewYork,1955;WestofTexas,NewYork,1955.22.FederalEmergency Management Agency,FederalZnsurance Administration, FloodZnsuzance Study,TownofO~eceo,~osweo~Count,NewYork(Unpublished)

~23.FederalEmergency Management Agency,FederalZnsurance Administration, PipedZnsuzance Stu(g,TownofNewHaven,~osweo~Count,NewYork(Unpublished)

~24.FederalEmergency Management.

Agency,FederalZnsurance Administration, FloodInsurance Study,TownofV~olne,~osweo~Count,NewYork(Unpublished)

~25.FederalEmergency Management Agency,FederalZnsurance Administrationf FloodInsuzance

~Stud,Townof~Grant,~osweo~Count,NewYork(Unpublished)

~26.FederalEmergency Management Agency,FederalZnsurance Administrationf (Unpublished)

~27

27.FederalEmergency Management Agency,FederalInsurance Administration, FloodZnsurance Study,Townof~Lsander,

~Osweo~Count,NewYork(Unpublished)

~28.FederalEmergency Management Agency,FederalInsurance Administration, FloodZnsurance Stu(2Z,~Citofpulton,~osweoCoun~,NewYork(Unpublished)

~NewYorkStateDepartment ofTransportation, 75MinuteSeriesPlanimetric

~MasfScale1:24,000, ContourInterval10Feet:NewHaven,SecondEdition,1975>OswegoEast,SecondEdition,1975;Texas,SecondEdition,1975;WestofTexas,SecondEdition,1975~OswegoCountyDepartment ofpublicWorks,~Naof0~seeo~Count,NewYork,Scale1InchEcpxals2Miles,TheNationalSurvey,Chester,Vermontf19'74~theEEC-2~EzideRoutines,

~TraininDocumentNo.6,Davis,California, June1974mU.S.llrmyCorpsofEngineers, Eydzologic Engineering Center,~FloodwaDetezmination U~sinComputerProrramSEC-2,~TzaininDocumentNo.5,Davis,California, May1974-U.S.~YCorpsofENgineers, southatlanticDivision~yzoodwa~esicenConsiderations, September 1978~U.SDepartment oftheInterior, Geological Survey,Bulletin68,Characteristics ofNewYorkLakes,part1,Gazetteer oflakes,PondsandReservoirs byP~E.GreesonandF.LRobi.nson, washington, D.C.,1970~StateofNewYork,Scale1:500,000, Reston,Virginia, 1975~28

ICCIOIalIL'JjRK266IOLljOg280276270265SIXIYEARFLOOD100YEARFLOOD60YEARFLOOD10YEARFLOODSTREAQSEDCROSSSECTIONLOCATION27S270OZoK172oQoCO~U.wOoKOI-16.016.617.017.6IILO~IIL610.011.6.20.020.621A)STREAMDISTANCEINTHOUSANDS OFFEETABOVECONFLUENCEWITHLAKEONTARIOOlP

40labao5290ICRClVOUJO~286oIJ285O2152102652I.O21.622.023.624.02i.s25025$STREAMDISTANCEINTHOUSANDS OFFEETABOVECONFLUENCE WITHLAKEONTARIO28AILEOEND500YE'ARFLOODI00YEARFLOOD50YEARFLOOD10YEARFLOODSTREAMBEDCROSSSECTIONLOCATION216h.5<<te'8Cbo~oE3oCOug8~$g02P

a0Z340ICAlsdika0ChCI~eJIhIIII2:CJIIJzg3350I1.602.002.fi03.00STREAMDISTANCEINTHOUSANDS OFFEETABOVECORPORATE LIMITSS00YEARFLOODl00YEARFLOOD00YEARFLOODI0YEARFLOODSTREAMBEOCROSSSECTIONLOCATION32S0Z;us~<o'3u)U-eogDoxjZ.CC903P 0

7ILIWCh~aa330I~326OI31531011.816.21&.61$.0HL418.811.2IsaIILOSTREAMDISTANCEINTIIOUSANDS OFFEETABOVECONFLUENCE WITHLAKEONTARIO'IIL1LEOEND600YEARFLOOD100YEARFLOOD60YEARFLOOD10YEARFLOODSTREAMBEOCROSSSECTIONLOCATION315uO2o~c)o,<oo<nQofjo04P'

'~<hI'4350IILCRce4leg3ISILEGEND600YEARFLOODl00YEARFLOOD80YEARFLOOD10YEARFLOODSTREAMSEDCROSSSECTIOtlLOCATIONuZ4ZOlog<<ulzus),U-ea4-'o<<;PlJwcI-IIL418.8I9219.820.020ASTREAMDISTANCEINTtIOUSANDS OFFEETABOVECONFLUENCE WITHLAKEONTAttiO05P 0

216210al5K265I2152204AI@ilasCCOChcoalIk)CIllDiI2:CJg2600I92662452400.601.60~2AO2.603.003.604QSTREAMDISTANCEINTHOUSANDS OFFEETABOVECONFLUENCE WITHLAKEONTARIOLESEND600YEARFLOOD100YEARFLOOD60YEARFLOOD10YEARFLOODSTREAMSEOCROSSSECTIONLOCATION)I$Zpg<<Cill'$O)~45oVl~~

Ql~458ChC5CIIAuV-285Ig280I275270255500YEARFLOOD100YEARFLOOD50YEARFLOOD10YEARFLOODSTREAM8EDCROSSSECTIONLOCATION27627020uo8.00~8.508.00Q,5010410.5STREAMDISTANCEINTHOUSANDS OFFEETABOVECONFLUENCEVIITIILAKEONTARIO12.0

326325~Ale~keCS0hClaIMIILLJClla5315IW315z310OI310O12.513.0ILO<N.616.016.6IS.OIIL617.6LEGENDQOYEARFLOOD100YEARFLOOD60YEARFLOOD10YEARFLOODSTREAMSEDCROSSSECTIONLOCATION16.4STREAMDISTANCEINTHOUSANDS OFFEETABOVECONFLUENCE WITHLAKEONTARIO08P k

eI210210~OlallpgaC5CN'5CSClIhSCO255IWILg260I2552452400.20OAO0.50e'.801.001.20IAO1.601.80STREAMDISTANCEINTHOUSANDS OFFEETABOVECONFLUENCE WITHLAKEONTARIO6.2.20LEOEND-SOOYEARFLOOD100YEARFLOOD50YEARFLOOD10YEARFLOODSTREAMBEOCROSSSECTIONLOCATIONQAOP.OOy$cCOTaill>~o 0

C40illIkOYIIJZ280I~IL280Cl~baUUOz276oI276270286LEOEND500YEARFLOOD100YEARFLOOD50YEARFLOOD10YEARFLOODSTREAMBEO270265OZR.SO2o<<C'Eo)~uoC77oOg)2'.3.40,3.603.80i.004.208AOSTREAMDISTANCEINTHOUSANDS OFFEETABOVECONFLUENCE WITHLAKEONTARIOCI.CROSSSECTIONLOCATION1DP 0

ChILCJOCCOMMO290g2860276276210600YEARfLOOOIOOYEARfLOOO60YEAAfLOOOIOYEARFLOODSTAEALISEOCAOSSSECTIONLOCATION6.20SAO6.00I0.200.406.600.80MOTAOMOSTREAMDISTANCEINTHOUSANDS OFFEETABOVECONFLUENCE WITHLAKEONTARIO11P 0

3103IOOl~al~a4~40ClCCOIKDz3000I286LEOEND500YEAhFLOODI00YEAhFLOOD50YEAhFLOODI0YEARFLOODSTREAMBEOCROSSSECTIONLOCATION285rOIIIh.5~z~OoCll'+z)U-csB.q08.20BAO8.60'80NO8.20)QAO8.80STREAMOLSTANCEINTHOUSANDS OFFE'ETABOVECONFLUFNCEWITHLAKEQNTARIO8.80IBAD12P

~S255~tlle~sCS0ChCSlaz2500I2150.20OAO'.500.801.001.201AOSTREAMOISTANCEINTHOUSANDS OFFEETABOVECONFLUENCE WITHLAKEONTARIO600YEARFLOOO100YEARFLOOD60YEARFLOOD10YEARFLOOOSTREAMSEOCROSSSECTIONLOCATION246go)-h.8IJugOoWQaIL13P

'

VlCS276tlK210276UJLJJ2Cz266052.00c2.202AO2.60STREAMDISTANCEINTHOUSANDS OFFSETABOVECONFLUENCE WITHLAKEONTARIOLEGEND600YEARFLOODI00YEARFLOOD50YEARFLOODlDYEARFLOODSTREAMBEDCROSSSECTIONLOCATIONuZoI0~~6OoDH0OIIIIL~

~~4lE(I COMMUNITY

-PANELNUMBERboFBLakectbu~')Tributary No.iLokeuiewCreek0--liLT3606630005BiCONRAIL.co.--,-RPI>>QiQtoaLIn0002alN(BlackCreekTributary No.8000ciBlackCreekTributorYNo.9OAOQlbyt00b'bitdVnPONDTHISAREAOFTHECOMMUNITY ISSHOWNASINSETAONPANEL36066300058n0',Z.36066300108FuddyPood)TritutanPCROOLLB~PONDDeerRldeeCreek,TrbutaryPADDY,PONDviPaddyCreekVa~axNATIONALFLOODINSURANCE PROGRFIRMFLOODINSURANCE RATEMATOWNOFSCRIBA,NEWYORKOSWEGOCOUNTYPHINTED,JUFI3089TIEYYBERRY GDAVISPRCI:RTUBE~ARD.9ocketOESQ.

+'oofrclWUC'If~o tl~Omeg/~ofOocilmeiih R."O'ULATORY ROCKETFILEMAPINDEXPANELSPRINTED.5,10PROOF!SEPT16,1982COMMUNITY-PANEL NUMBERS3606630001-0010 EFFECTIVE DATE:federalemergency management agencyfederalinsurance administration ELEVATION REFERENCE MARKSELEVATION REFERENCE MARKSTHECORPORATE LIMITSHAVEBEENSHOWNOFFSHOREFORCLARITY.THEACTUALCORPORATE LIMITSCOINCIDEWITHTHESHORELINE.'O RPO'R(kTE KEYTOMAP500-YearFloodBoundary-100-YearFloodBoundary-ZoneDesignations*

ZONEA0ONEC0ZHALL'IGAOINSETATHECORPORATE LIMITSHAVEBEENSHOWNOFFSHOREFORCLARITY.THEACTUALCORPORATE LIMITSCOINCIDEWITHTHESHORELINE.

REFERENCE MARKELEVATION INFT.(NGVD)RM1270.32RM2255.43RM3272.11RM4252.07RM5274.67RM6284.47RM7270.75RM8274.04INationalGeodeticVerticalDatumof1929DESCRIPTION OFLOCATIONSoutheast cornerofconcretecurbattheAA.Fitzpatrick NuclearPowerPlant,approximately 250feetsouthofLakeOntanoChiseledsquarecutinnorthwest cornerofdockofPrivateRoadbridgeoverLycommgCreek,locatedapproximately 1900feetnorthalongPrivateRoadfromEastLakeRoadmterssctidn, ChiseledsquarecutintapofnorthheadwallofEastLakeRr)adbridgeoverLycommgCreek,locatedapproximately 700feetwestalongEastjakeRoadfromNineMilePointRoadintersection.

Chiseledsquarecutintopofsoutheast cornerofsouthheadwallofPrivateRoadculvertoverLakewewCreek,locatedapproximatety 1400feetnorthwest alongLa'keViewRoadfromintersection ofEastLakeRoadChiseledsquarecutintopofeastheadwallofParkhurst RoadculvertoverLycomingCreek,locatedapproximately 1850feetsouthalongParkhurst Roadfromintersection ofEastLakeRoad.Chrsbledsquarecutintopofsoutheast wingwallofLycom-mg)RoadbridgeaverLycomingCreek,locatedapproxi-matrjtv2400feetsouthalongLycorning Roadfrominter-sectionofEastLakeRoad.Boltsetin40inchmapletreeonsouthsideofEastLakeRoadnearLakewewCreekcrossing, locatedapproximately 300feetsouthwest.

alongCliffRoadfrommtersection ofLakeViewRoadBoltsetin40inchmapletreeonnorthsideofCliffRoad,locatedapproximately 300feetwestalongCliffRoadfromintersection ofEastLakeRoad.k(t(TSCOA"'OIIIE.A1 (EL249)ZONECREFERENCE MARKRM9RM10RM11ELEVATION INFT.INGVD)324.69306.54263.93DESCRIPTION OFLOCATIONBottsetinutilitypole38onsouthsideofMinorRoadnearculvertoverLycomingCreek,locatedapproximately 400feeteastalongMinorRoadfromimersection ofLycomingRoad.ChiseledsquarecutintopofsouthheadwallofCONRAILbndgeoverCliffRoadCreek,locatedapproximately 2600feetwestalongCONRAILfromintersection ofLakeViewRoad.Nailsetatintersection ofCONRAILandPnvsteRoad;locatedapproximately 1900feetnorthwest alongPrivateRoadfromintersection ofNorthRoadRM12RM13321.91354.54ChiseledsquarecutintopofsouthheadwallofMiddleRoadculvertoverWalkerCreek.locatedapproximately 1600feetwestalongMiddleRoadfromintersection ofCreameryRoad.BoltsetinutilitypoleN.M125onnorthsideofStateRoute104culvertoverWalkerCreek,locatedapproxunstety 450feeteastalongStateRoute104fromthemtersection ofCreameryRoad1NationalGeodeticVerticalDatumof1929PRIVATE~ROAD)ADLAI1.Ezg,tNay'RIVATE ROADLakeviewCreekZONEC'BZONEA1'ZONEA1LIMITOFDETAILEDSTUDYYZONEAi.ZONCZONEA26.'ZONE8(EL249)12490254OyQOONE..A20'799,g'+BONEA1266)~~nhtLER PARKROAD0'P9RIVATEwo1RMwsROAD27.27CLIFFRQAD,.ZONF00T6EiI0GErF,yZONEC///,/ZONE/BWg/pXRO/OZOEB2)gZON656.ONE(IprO/A~O~ROADZONECMINORWRM1~ACCESROADJLACCESSR~QOJO0D0RM2ZONEA3~nZONECc+0mra'e22~io~~ZONEA3'~ho2~5266)022--PBJVAT6A,STsZOZONE'A2:"JAFitzpatrick NuclearPowerPlant'NEZONE.ONECZONEBORM6ONEC+fZONE,C',p+.t.rZONE.BZONEA5'ZONE,NECupZONEC2/O7NEA'00ZONEA2~EbbZONEB3(SRRDAO~324MIN42R929IMITOFDETAILEDSTUDY~RODn0zlz!m,2100-YearFloodBoundary-

'"'::",2E,IPJE,500-YearFloodBoundary-BaseFloodElevation LineWithElevation lnFeet**BaseFloodElevation inI-eetWhereUmformWithinZone**513(EL987)RM7>(Elevation Reference MarkZone0Boundary-RiverMile~M1.5*NReterenced totheNationalGeodeticVertiralDatunlof1929*EXPLANATION OFZONEDESIGNATIONS ZONEEXPLANATION Areasof100-yearflood;basefloodelevations andfloodhazardfactorsnotdetermined Areasof100-yearshallowfloodingwheredepth'rebetweenone(I)andthree(3)feet;averagedepthofinundaaion areshownbutnofloodhazardfactorsaredetermined.

Areasof100-yearshallowt)oodingwheredepthsarebetweenone(1)andthree(3)feet;basefloodelevations areshown,butnofloodhazardfactorsaredetermined.

Areasof100.yearflood;basefloodelevations andfloodhazardfactorsdetermined, Areasof100-yearfloodtobeprotected byfloodprotection systemunderconstruction; basefloodelevations 2ndfloodhazardfactorsnotdetermined.

Areasbetweenlimitsafthe100-yearfloodand500-yearflood;orcertainareassubjectto100-yearflood-ingwithaveragedepthslessthanone(1)footorwherethecontributing drainageareaislessthanonesquaremile;orareasprotected byleveesfromthebaseflood.(Mediumshading)Areasofminimalflooding.

(No'shading)

Areasofundetermined, butpossibte, floodhazards.Areasof100-yearroastalfloodwithvelocity(waveaction);basefloodelevations andfloodhazardfactorsnotdetermined.

'reasof100-yearcoastalfloodwithvelocity(waveaction);basefloodelevations andfloodhazardfactorsdetermined.

NOTESTOUSERAOAHA1-A30A99CDVV1-V30Certainareasnotinthespecialfloodhazardareas(zonesAandV}maybeprotected byfloodcontrolstructures.

Thismapisforfloodinsurance purposesonly;itdoesnotneces-arilyshowzltareassubjecttoftoodinginthecommunity orpllplznimetric featuresoutsidespecialfloodhazardareas.Foradjoining mappanels,seeseparately printedIndexToMapPanels.INITIALIDENTIFICATION:

FLOODHAZARDBOUNDARYMAPREVISIONS'LOOD INSURANCE RATEMAPEFFECTIVEstILOODINSURANE5RhlIMAPRFVISIONS ZONEA2/ONEB,/ZONEA1(EL249l

..',ZON/ZONEA2~NpppLIMITOFDETAILEDSTUDYRM1000g.ZONECPU}9oZONEA1~4(Et.249)wrZONECZONEZNEA1,qcQiNORTHROAOZONECQiRefertotheFLOODINSURANCE RATEIVIAPEFFECTIVE dateshownonthismaptodetermine whenactuarial ratesapplytostructures inIhezoneswhereclevations ordepthshavebeenestablished,Todetermine iffloodinsurance isavailable inthiscommunity, contactyourinsurance agent,orcailtheNationalFloodinsurance Program,at(800)6386620Qrr.pit-CO1000APPROXIMATE SCALE01000FEET0@NATIONALFLOODINSURANCE PNOUNANIMIDDLEZONEC~ee4ROAD~3"ZONECZONEA2p.ZONEIlBLIMITOFjRM.DETAILEDSTUDY+1234ZONEA49N.sZONEBZONEBZONEA5..'EwraZONEBZONEB'21ZONECWalkerCreek330MIDDLEROADPANEL6OF10(sEENMAIINDExFoRPANEL6a)DTPRINTED)FLOOOINSURANCE RATEINAPFIRNTOWNOFSCRIBA,,NR%'YQRKOSWEGOCOUNTY'ZONEBPRlVATE3(i1Vl,ZONEA20TBAIOGE>06355LIMITOFDETAILEDSTUDYQapZONECPRgCgRoICCI(lTCI0OIUCCgmg+

U-16-',UUCNEIPILEUEUU$1PROOFSEPT1611982CDNIIIUIIITY-PAIIEI.

IIIUNBER3606630005l3'FFECTIVE DATE:I'/FederalEmergency Management Agency,DEWBERRY&CcEFRAME.

g//.0QQ000ou38ZONEA1ZONEA4XRM'168--UxZTERN/dzOSIIVEZONEBRM14n.Ptarv/oR-:-"Z//wUEPRIvATE,ORZ/ZONEBOIZONEBPRIVATEROADZONE.RO40ZONECZONEBr'LZPNNI'a I14+.LIMITOFDETAILEDSTUDY,,OI/Ui/p/UiII...RIUATE'lp~'ONtECr"ZONEA"',0RoZONEA/0:RoZONEB4A~niVA~EPRIVATElDRIVEPRIVATEi0RIVF.',0'iO@74x/i9'40//ZONECI'>icic,0')clljrn00tk)WZONEAL'.-040Q4IlnROADWHITTEMOREI,'ih0I)m2'iloROADZONEC,/tvl2,ZONECZONEA'0umm10,I0CONNERROAZOIROAD00310073xmZONEi',ZONEAh,sl,R-u"'0z002zz'mz'0ZmZrnm02ZmIct000tcKEYTOMAP'"ZOFEE8'00YearFloodBoundaryZoneDesiznationse WithDateofIdentification e.g.,12/2/74100YearFloodBoundary500-YearFloodBoundary-513~BaseFloodElevation LineWithElevation InFeeteeBaseFloodElevation inFeetWhereUniformWithmZoneveElevauonReference MarkRiverAgile(EL987)RM7x~M1.5eeReferenced totheNationalGeodeticVerticalDatumof1929"EXPLANATION OFZONEDESIGNATIONS ZONEEXPLANATION Areasof100-yea(flood;basefloodeievations andfloodhiltardfactorsnotdetermined Areasof100-yearshallowfloodingwheredepthsarebetweenone(I)andthree{3)feet;averagedepthsofinundation areshown,butnofloodhazardfactor.aredetermined.

Areasof100-yearshallowfloodingwheredepthsxgarebetweenone(I)andthree(3)feet;basefloodelevations areshown,butnofloodhazardfactorsaredetermined.

Areasof100yearflood.basefloodelevations floodhazardfactorsdetermined, Areasof100.yearfloodtobeprotected byfloodprotection systemunderconstruction; basefloodelevations andfloodhazardfactorsnotdetermined AreasbetweenlimitsoftheI'00-year floodand500.yearflood;orcertainareassubjectto100-yearflood-ingwithaveragedepthslessthanone(I)footorwherethecontributing drainageareaislessthanonesquaremile;orareasprotected byleveesfromthebaseflood.(Mediumshading)Areasofminimalflooding.

(Noshading)Areasofundetermined, butpossible, floodhazavc.Areasof100-yearcoastalfloodwithvelocity(waveaction);basefloodelevations andfloodhazardfactorsnotdetermined.

Areasof100-yearcoastalfloodwithvelocity(traveaction);basefloodelevations andfloodhazardfactorsdetermined.

AOAHAI-A30A990DVVI-V30NOTE5TOUSERCertainareasnotinIhespeciallioodirarardas(zoIsAaidV)maybcprotected byfloodcontrolstructures.

Thismapisforfloodinsuran,purposesonly;itdoesnorneces-sarilyshowallareas.subicrstoilomlingrnIhecommunity orallplanimetric feaiurgzdutsidc specialfloodhaardareasForadloining rnaPI>anclsf%vcl,trulcly dIndextriMaPPanels.INITIALIDENTIFICATION:

FLOODHAZARDBOUNDARYMAPREVISIONS FLOODINSURANCE RATEMAPEFFECTIVE FtODDINSURANCE RATEMAPREVISioNS;

ZONEAITGIl',0H.04'291xRM17ZONECZONEB',,ZONEA4RIDGEZONEBROAO'IS4,$.7IPRIVATEDRIVEDEERPRIVATEROAD%~""-."l.ROdRiorRPO0vyROADZONECFROIZONEAÃ0vtir'Oi2IIZONEC1404(c'BI@oi;ZONEAr74)DZPOZONECIrToraAsCree/yP,I..Oq,vI'"0,'ONECROAOxh0ZONEARefertotheFJDODINSURANCE RATEMAPEFFECTIVE dateshownonthismaptodetermine whenactuarial ratesapplytostructures inthe'oneswhereelevations ordepthshavebeenestablished.

Todetermine iffloodinsurance isavailable Inthiscommunity, contactyourinsurance agent,orcalltheNationalFloodInsurance Programat(600)6364I620.

APPROXIMATE SCALE1000000FEEINATIONALFLOODINSURANCE PROGRAM298ZONERM18I;ZONECZONEBDeerRidgeCreekTn/nrrary ZONEBCOF(PORATE L.ZONEAL'AZONE'2A.;fz'egZONECioIIPIloZZONEA'9o0ZONEACORPORATE LIMITSZONECZONEIAFI.OODINSURANCE RATEMAPTOWNOF8CRIBA,NEWYORKOSWEGOCOUNTYREFERENCE MARKRM14RM15RM16RM17RM161.,NeroELEVATION INFT,(NGVD)337.74342.99370.73309.74305.30oueticVerticalDatumof1929ELEVATION REFERENCE MARKSintersection ofCityLmeRoad.Boltsetmutdrtvpole51onnorthsrdeofHailRoasatla/meCrIocaiedapproximately 3300feete;.talongHailRoadfromntrrsecuotofCityLineRoarStandardUSLSdisk,stampedOS71935,setmwestendofwirldovvsi IutnorthsofPaqeMernonaiChapel,locatedastsrtofQlditateRoute57sole6050onwestsideof()IdStateRoute67,ioratedapproximately 1500feetnorthalongOldStateRoutq57frommiersection ofDeerIPKnailsetinuulrtypole156onrestsideofIIStateRoute57,hiedapproximaieiy 2'I00feetsouthalong0dStateRoute57frommtersectron ofDterRdgeRoad.DESCRIPTION OFLOCATIONBaitsetmupoleN.M'IonBelchDove,Ircatedapproxmately450feeteastalongBelchDnvPKnailsetnutnRrdgeRoadPRCXPERTU~F-C~IID0-""TIooVif'~AT)oO~o~mOO%~11fttQLoeo1OO1DO<IREEPANEL10OF10'(SEEMAPINDEXFORPANELSNOIPRINTED)PROOFSEPT1611982CDMMUItITY PANELNUMBER3606630010BEFFECTIVE DATE:federalemergency management agency

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