Laserfiche WebLink
<br /> ANCHORAGe HOUSTON <br />I ATLANTA l.OS ANGEL<;S <br />BETHESD,' N[W YORK <br />CHICA<,Q PHOENIX <br /> CINCINNATI com~a <br /> CRANFORD SALTL IS-') <br />I 010; NVF.fl SAN F <br />FAIROANI(S SANTA BARGARA <br />HONOLULU "EATTl.E <br /> WASHINGTON, D. C. <br /> <br />- <br /> <br />CALGARY <br /> <br />GUAM <br /> <br />PERTH <br />SEOUL <br />SINGAPORE <br />SYDNEY <br /> <br />JAKARTA <br /> <br />DAMES 8 MOORE <br /> <br />..JOHANNESBURG <br />LAGOS <br /> <br />TEHRAN <br /> <br />lONDON <br /> <br />TORONTO <br /> <br />CONSULTANTS IN THE ENVIRONMENTAL AND APPLIED EARTH SCIENCES <br /> <br />MADRID TOKYO <br />VANCQUVER,B.C <br /> <br />I <br /> <br />605 PARFET STREET <br />CABLE: DAMEMORE <br /> <br />DENVER, COLORADO 80215 (303) 232-6262 <br />TWX: 910-931-2600 <br /> <br />I <br /> <br />June 30, 19'75 <br /> <br />I <br /> <br />Department of Natural ReSOurces <br />Colorado Water Conservation Board <br />102 Columbine Building <br />1845 SherD~n Street <br />Denver, Colorado 80203 <br /> <br />I <br /> <br />Gentlemen: <br /> <br />I <br /> <br />Flood St.udy <br />Narrows Dam <br />South Platte River <br /> <br />I <br /> <br />We are pleased to present our report on the review of the <br /> <br /> <br />Narrows Project inflow design flood and spillway desij;n, as prepared <br /> <br /> <br />by the U. S. Bureau of Reclamation. This letter sunnnarizes our <br /> <br /> <br />results, and the attached report contains the details of our studies. <br /> <br />I <br /> <br />I <br /> <br />Our princi,pal conclusions may be sunnnarized as follows: <br /> <br />I <br /> <br />a) <br /> <br />That the lDF can be reduced in volume by approxi- <br />mately 25 percent. <br /> <br />That this reiluction, in combination with rather <br />spec.ific design changes in the spillway, can <br />achieve a redue-tion in construction cost of dam <br />and spillway from $59.2 million to $39 million, <br />with a resulting reductioIlLin investmen.t cost, <br />" Su'l"C no......:a~ f S2/" 'II' <br />:~ncludJ.ng .(~O percent \ '1 ~ I [, }, o. ... . In}. lone <br />Of this reduction $5 million i.s attributable to <br />the reduc.t i.on in IDF ~ and '$19 mi.ll.iori is due to <br />the design changes. <br /> <br />b) <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />The remai.nd.er of thi.s l~~tter summari.zes the rattonale through <br />which we reach these princIpa.l coneJ.usionsd <br /> <br />I <br /> <br />I <br /> <br />I <br />