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<br />Tabl~ 6 lists the water surface elevations for th~ 10-. 50-,
<br />
<br />100- and 500-year flood ~vents at ~ross s~~tion points.
<br />
<br />Flooded Area
<br />
<br />In Colorado. the lOo-y"ar freqllcocy flood has becnsc1ccted to
<br />delineate and reg"lat~ floodpl,~ins. Therefore. the flood area maps sha..'
<br />only the boundary of the lOO-year floodplaIn. Thell".appinghasa2feet
<br />contaurintervalandllnchequalt0400feetscale. If needed, thelO-,
<br />50- and 500-y~ar Cloods can readily he delineated on th"s" ..aps \ldng
<br />the information presented in Table 6.
<br />
<br />Aspect
<br />
<br />Backwater Effect
<br />
<br />Channel
<br />
<br />The 100-year floodplain as delineated on the Flooded Area ll\ap~
<br />meets the requitements of House Bill 1041. Upon offitial approval of
<br />this report by the Colorado Wat"r Conservation Board, the ar"" olltlined
<br />by the 100-year flood boundary will be designated a floodplain area and
<br />the local officials may r"gulate it accordingly.
<br />
<br />Cloudburst
<br />
<br />Flood Elevations
<br />
<br />Wnter ~llrfa<.'"", elevation.. for the 10-, 50-, 1.00-, :lOd ;OO-y<,ar
<br />floods Can be found in four different locations in this repott. These
<br />locations include; (1) The_flood frequency-elevation anddischar!o\edata
<br />presented in Table 6 for selected points alons the river reaches ; (2)
<br />th<!UIIlitsofthelOO-yeatfloodinplanpres"nteJinPl..te,,3through
<br />14; 0) the flood profiles :Ire sho\o'tl in Plates t5 thrOllgh ZZ; and Plates
<br />ZJ through 31 shows the ;.'llt'H ~llrface elevation for different frequen-
<br />cies at typical cross ~ections throughout the study reach.
<br />
<br />Correlation
<br />
<br />Conflllencc
<br />
<br />Conveyance Capa-
<br />
<br />d.ty
<br />
<br />The flood profiles may he lls~d in areas where controversy
<br />aris"" "ver the lOo-year flood boundary "u the Flooded An'" Platt'$.
<br />Since the Flood Profiles give the elevation.. "nddhtance or at"tioning
<br />
<br />" '
<br />"v",,,..,,v,..,
<br />
<br />pui"" cia' i,i1';h ""'c,,. "lcv"~,,v,,~ ~.." ,,,. ,,"HV"'y..,<i cu c;,~
<br />
<br />ground.
<br />
<br />Ues}ganted Flood-
<br />plain
<br />
<br />'"
<br />
<br />GLOSSARY
<br />
<br />Is the general basin orientation from a higher to a
<br />lowerpo:lnl in rellltion to east, ",,,al. north alld south
<br />directions.
<br />
<br />Ihe dse in sutf"c~ elevation of flo...ing ...arer up-
<br />stream fraro and aa a result of an nhstruction of flow.
<br />
<br />A natural or artificial watercourse of perceptible
<br />extent with defInite bed and banks to confine and cOn-
<br />duct continuoualy or periodically flowing water.
<br />
<br />A sudden and extremely heavy downpOllr of rain that is
<br />s~ll in areal extent; of short duration; and may be
<br />accompanied by lightning. thunder, ~nd strong gusts of
<br />wind.
<br />
<br />The process of cst"-hH.shing a relation bet..eell a
<br />variable and onc or mote related variables.
<br />
<br />A point where two or morC streams meet.
<br />
<br />". eh",,,,el con\ley"-nce capacity is the rHe of dl~-
<br />charge, In cubI~ feet per second, ...hich can [l~
<br />in n water course with the water su~face not
<br />
<br />>,
<br />
<br />gr~ater than the height of the channel banks.
<br />FloodwlIY conveyanc"cap"city is the rate of dls-
<br />charge In thp overlfow portion of th" fluodway
<br />\olhh:h call I'a"~ through ~ sp,,_cificd nrea at depthS
<br />and velocities I\ov"rned by the hydr.~l [c dimensions
<br />
<br />or tic" rl~u..l"i"y.
<br />
<br />The .uelldesignatcd "a" [l,,,,dplainby official action
<br />of the board af county ~ot1'II1l1.~sioner~ ur dly council
<br />...:itl1 the prinT "nncurrenceof the Coloradnliater Cnn-
<br />~erV"ll<ln BoaTd.
<br />
<br />"
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