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<br />retard flow and raise water surface olevatlons upstrean. HIgh cliff
<br />ty~e b,mks that line much ot the stream are rough ond varyIng in
<br />cross section t~at generate turbulence in the water and slows Its
<br />prognlS5,
<br />
<br />ThenorthtrlbutarytoCottonwoodCrookhllsnebrldges
<br />or man made obstructions to Impede flow, but the south tributary has
<br />4 culverts thatoostrllCt flew. Table 2 isa listing of all bridges
<br />orculvertsthatcrassCottonwoodCreekandifsfrlbutaries.
<br />
<br /> ~
<br /> "
<br /> e
<br /> "
<br /> B
<br /> ~
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<br /> 0
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<br /> 5
<br /> m
<br /> "
<br /> e
<br /> 0
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<br /> <
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<br />W 0
<br />" 8
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<br /> 0
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<br /> 8
<br /> "
<br /> 0
<br />
<br />Other Factors Affectin"l Floodin"l
<br />TwO small raservolrsare located in the upstream roaches
<br />of Cottonwood Creek. These reservoirs ara beneficIal in increasIng
<br />I nflltration rates and reducing p",,,,k runoff froo floods of small
<br />ITklgnltude. Large floods ",re relatively unaffected by "ttle small
<br />storage capacl ty, and because of I nildequate earthen d3m!; ~nd spIll H
<br />ways, they could Impose greater hazard on properties downstream.
<br />
<br />Flood Dimaqe Prevention I~""suras
<br />Several flood damage prevention me<lsures have been taken,
<br />by local Interest, for the reachoT Cotton"'oodCreek from Academy
<br />Boulevard eastward fer ~pproximately or\€ mi I". A sh"et pile retaIn-
<br />ing wall has been construc"ted across the creek above Academy 8oulo-
<br />vard to prevent erosIve degradation of the stream. Also along the
<br />northernSldaofthestreom, looveesot local sand C1nd gravel mllte-
<br />rial Mave been con~tructcd to protect adjacent reslduntlai ar~~~.
<br />
<br />Theieveetrommlle 1.70 to mile 2.08 has been partly stabilized
<br />wlthsparsegra5ses,butfhe levee from mile 2,27 to mIle 2.46 has
<br />bee.~ recently constructed arld has no stabi I i zin,) material to pro-
<br />tect it from eroSion.
<br />Both the need for und means of preservl ng f loodway Idnd~
<br />ans. recelvirlg consideration in the coordinated land use planning
<br />that presently Involves the Pikes Poak Area Oouncll of Governments
<br />{PPACOG) and its portlclpatlrlg local government entities in EI Paso
<br />Ccwn+y. Ovo,"" II roglon~ I poli eles, p Ianni ng g0di s, and proposed im-
<br />Plernentatlon(includingregul<ltionty local laws to maintain drainage
<br />
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