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pl~in l~nd~ while eafsguarding th~ safety, health, and ~elfa~e of ths tot"l co",munity. Deeig""ltld flood"ays may t>~ re!;on'od by es- touli~liin\> ilncrOdC;hi".ent linc~ that clearly defi"" th" flnodw~y zone. The utilization of flood plein lands adjacent to the floodway is limited only by tho degree of flood risk deemed allowable (a deter- mination of local govern~ent) and the requirements of the city" normal 10ning criteria for the are". " ~ i thllt section of By general definition,,, ~oo~w"y s the flood plein "reo provided to convey e deeign frequency flood eO that remaining sections of the area Can be used more economically. The'"deaignflood"oftanselectedinCorlnect!onwithfloodwaydeter- minations is the IOO_year frequenoy Intermediate Regional Flood. In terms of maintaining a reasonable balance between the advantages " . , "00" 'o..eo and the disadvantages of ovsrly raducing potentle. ~ u. .., f'~~d'. heinhte end areal limite are con_ restricting land uoo, _".$ .~~ ~ sidered most practical for use in gaining the goale sought through T~ _~,,'_'_. .he aroa available for economic devel- selective zoning. 'u "'u^."'.. , opment, a floodlliay lese wide then that required for the unconfinsd flood can be designed to convey floodflows with an allowable rise of not more than 1 foot above the unconfined flood's water eurf~ce elevation. In euch event, developments in the fringe area would , d ~ "" "be otherwise protscts~ by floodproofing, need to be ra~se 0.. ~u, to the dosign ~~ter surface slevation of the flood~ay. Cities and counties within the State of Colorado ar~ elevations of lend to avoid flooding, sizo of floodweys, end other raquiro",ents effecting the health, ~elfare and safety of ths~ommunity. Those regulauons provlde an el't'ective means of controlling con_ struction and preserving floodweye in presently undevelopod fl~od plain area"" BuilrtinoCodes In addition to the more conventional construction stan_ dards set forth, building codes ~hould spocify provisions that as_ sure the structvrel integrity of buildings during flood periods. Requirements to 'reduce flooddamogas include elevation control, considerations of strength and deterioration susceptibility involv_ ing materials, proper anchorage, and floodproofing criteria. Floodproofino Floodproofing measures Can be effectively applied to both existing end propobeJ ~tructures in rslatively low_~isk hazard areas. Those may includo land filling ~nd elevetion of structures, eite adjustments, and structural design changes that raducs damage vulnerability. authorized , d . '. Assistancoend to anaot end enforce ~an use con"ro~ . the enactment of reeolutions, ordinances, and regulations to flood plain management ie ~v~ilable from the Color~do Kealth Reaul~tions These regulations Can serva to control ths uee of flOOd plaine for waste diepoeel and the construction of wator and sewage treatment facilitiee that may create health proble",s during floods. guidence on that relet.. Water Coneervation Board. forecastino and Evacuation Accurate, timely foreoasting of floods and critical stream stagas, coupled with temporary evacuation and other omergency actions, Can often seve li~ss in addition to reducing property losses. In the de~elopment of local community planning, provisiona should be made for alorting eree residents and coordinating oper~- tione of city_county public eervice egencie. throughout the flood Subdivision Reoulations Used bylccal goverMlents to specify themannar in which land may be divided, subdivision regulation~ may prescribe the width of streets, curb and gutter requirements, lot sizes, " ~