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<br />Hood In.urance
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<br />fi~<."I""j
<br />~ncroach~ent on flood plains, such as artificial fill, reduces ~he flood~
<br />carrying cap'lcity, lllcre".",. the flo"d heIght. of stcea",s, ..aJ Increases
<br />flood ha~ards b. ar.."s ""yood the encro"chment it.elf. EncrO'lchmcnts can he
<br />con~rolLBd in >:ontng regul,,~ion6, aad for thh purpoae, Ch,~ffee County uSeS
<br />the flood.....y c"ncept.
<br />
<br />1h" unincorporated areas of Chaff",,- County are p,u:tlcipating in the federal
<br />Emergency ?1.anag"",ent Agency's National Flood Insurance Program. nood
<br />in~ur,~nce Is ",wlllahle to "....ncr. ~nd "ccupsnts of all building", mobile
<br />ho<<,,,., and the(rcontents.
<br />
<br />Structural Flood Control Mensures
<br />
<br />There are no existing or currently planned flood control sttuetllres In the
<br />Ch"-lk Creek watershed. Suggestions reg~rding structural ,""ssures are
<br />Inclllded 1n the report section on "~lood Damage Reduction Measu(es."
<br />
<br />The floodw"y 1s the chan~el of a stream plus any adjacent fiood plain areas
<br />that must be kept fr"-e of encroachrnent In order that the 100-y",,<flood may
<br />he c~rried IItthollt ~"h8tantl" I Increase. in flood h"lght~. A theor,,~ical
<br />floodwayw,,"s cornputed for the Chalk Creek Studysrea. llccau"cofthe large
<br />amount of comp"tatlonal data, floodllay Information h included In Apper\d\x
<br />II separate tothi. report. D"ta lte in tabular fo.....andinelude floodll"'y
<br />lIidths, cross section\1l floll area, ~nd average ""locitles. Computations are
<br />f"raoincreClSelnrl"eof"atersurf\1ceelevatioosinO.5'increroentsfrom
<br />O.O'tol.5'abovethc IOo-yearflood.
<br />
<br />Flood Warning and Flood Forecaatlng Systems
<br />The Nat1on"-l Oceaalc and Atmospheric AdOlinlstratlon (SOAA) throug hits
<br />National Weather ServIce (NWS), m,.~int,1lns year-around surveillance of
<br />wcather ...ad flood conditIons. Dally '.."ather fore~asts aro 1s."ucd through
<br />the NWS .~nd d[ssernlna~ed by radIo and televis10n s~at1on.. A general alert
<br />to the danger ,,( n..sh floodIng t. o~" of th" servie,," provIded by the
<br />~atinnal We~ther Service.
<br />
<br />R~wM,ljE;;DATIO;;S
<br />
<br />General foreca"t" of ~"U"'t'Ilelt ru<loff fo( the Arkansa~ Rh~r "r~ "",d" c"-
<br />operativeLy but published "ep.~r"tely by the NWS and the Soil Conscrv.1t1on
<br />Survlce. StreanlflOl. forecasting 1s based on several f"ctors 1nd\ldtllg
<br />precipitation., "'at~r content tn the "",,,nt.11n. ~no"pack, and 0011 moisture
<br />con.dltloM on the water~h<'d. Thc fOrec,1Sts .nc I,,~de prl."""rlly for enJ.mat-
<br />1ng"'at"r supply for irri11"tton. lndusnial, ",,'nidp.,l :'nd other uses:
<br />I"'...evec, tile (bta L~ <1150 u~~d t~ Lndtc"~e p".enti.al floodln;: frol:l ~n~wl:IClt
<br />""nun.
<br />
<br />Th~ foll~wi"g "~cemrne"d~tionq ~r~ i~cluded for ~~~~lder~tlon i~ r~du~tng
<br />potcnt1d flood and "..,dflQ'" d"",,~ge'"
<br />
<br />,. Cl,,,Cfee C(.>u"q "l",,,lJ ",,1.>en;, llot.. f'iuod iial.ard 3<lldy"u "he Colorado
<br />
<br />Water Conservat1on Board for des1gn"t10~ artd app(ov"l.
<br />
<br />2. Chafh'e COlJ~t\. ~h<>LLld bi)ll'...~>"t ., flood I'l,'!" ","1Mg~::W~: pl~n fer the
<br />Hudy H~" .,~d '""'~crshcd" ...111<11 ar.' trtblltary to th<' n"dy 'rea.
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