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<br />, <br />I <br />, <br /> <br />comprehensive flood damage p~ventlon planning, probably the most <br />effective "tool Is in the area of development policies. "Flood con- <br />sclouS" governmental policies that limit the&xtenslon ot public <br />ro1lds, utilitIes, and other services into flood prone areas can play <br />an ImporHnt IndIrect role insh<lplngoverall development. Private <br />development often follolol5 The extension of public services. By 10- <br />eatIng public faclli"tles awey from flood prone arMs, a soft-sell <br />negative Influence Is projected which encouraglls -the occupancy of <br />hIgher and safer ground. Other actions that can be taken by local <br />governmental units Include the preservatIon of tloodways through <br />urb<'ln ranewal; providIng favorable tllxadJustrnentsto tMdsheld for <br />open spaca uses; and malnta!nlng necessary actions tor the city and <br />countytoremalnintheN6tional Flood Insurancef'rogram. Inare8S <br />of flnllnca, lending InstItutions, both federel and private, can 1,,- <br />fluence flood plaIn development by withholding mortgage guar::lntees <br />or other funding from tnose who contempll'lte projects that will In- <br />tensIfy known flood problems. <br /> <br />GLOSSARY OF TERMS <br /> <br />, <br />, <br />, <br />, <br /> <br />Flood. AnovertlOJ>/of lands, not norrnally covered by water, that <br />::lrousedorusablebyman. Floodshevetwoessentialchar"cterls- <br />tIcs; the Inundation of land 15 temporary; end the land Is adja- <br />cent to and Inundated by overflow from a river or stream, or an <br />OCtlan, lake, Or other body of shndIngwllter. <br />Normally, a "flood" Is considered as any temporary rise <br />In streamf low or stage, but not the pondi ng of 5urfaC41 "'~ter, that <br />results InsignIficant adverse effects In the vicinity. Adverse <br />effE,cts may Include damages tram overflow of I,,"d ~reas, te~orary <br />baCkwater effects in sewers and local dr::linagechannels, creation <br />of unsanlt~ry conditions or other unfavorable situations by deposit- <br />Ion of materials In stream channels during tlood recessIons, rise <br />of groundwater coincident with lncreasedstreaffiflow, and other <br />problems. <br /> <br />FurtherShdy <br /> <br />Flood Crest. <br />ofafloodat <br /> <br />Thel'll/lxIrr\iJmstage <br />a gIven locaTion. <br /> <br />or elevation reached by the waters <br /> <br />Continuing study and revIew of the floodways and <br />other areal des I gn~tlon ...hld rMY be defined I n connection wlth <br />flood plain zoning are parTlcul~rly Important in maintaining Il long <br />range land use planning program. Ccmrtunltyauthorltlesshouldperlo- <br />dlcally review and adjust the provisions governing the use of flood <br />plain I"nds whonovor new Infol""'llt!cn IndlcllTos Il change lnThelr <br />flood potential. <br /> <br />Flood Peak. The maximum instantaneous discharge of a flood at Il <br />given locatloo. Itusuallyoccursatorr>e<lrthetImeofthef!ood <br />crest. <br /> <br />Flood Plain. The relatively flat Ilrea or lowlands adjoining the <br />channel of a river, stream or watercourse, or ocean, lake or other <br />body of standing water, whIch has been or may be covered by flood- <br />water. <br /> <br />FlOOd Profi Ie. A graph showing th.. ndatlonshlp <.>1 w/:t..r surf~c" <br />elevation to locatIon, the l::lttergenerally expressed IlS distance <br />abov.. 'lOulh for a st",,,I'l of ...ater flow ing in 1In o~en channel. IT <br />IS generally drawn to show surface elevation for the crest of a spe- <br />cltictlocd,butmaybeproparec:forcandltionsatagiventlmeor <br />stage. <br /> <br />FlOOd S~age. ,'h~ S~a0G o~ elev/ltion at w~lc~ overflo>i of the ~aTU- <br />r~ I ban~$ of ~ stream or body of '~ater begl ns I n the Mach or araa <br /> <br />" <br /> <br />3C <br />