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WSP09766
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Last modified
1/26/2010 2:55:41 PM
Creation date
10/12/2006 3:54:48 AM
Metadata
Fields
Template:
Water Supply Protection
File Number
8443.100
Description
Narrows Unit - Project Description
State
CO
Basin
South Platte
Water Division
1
Date
8/1/1966
Author
US DoI BoR
Title
Narrows Unit Colorado South Platte Division Missouri River Basin Project Appendix IV - Agricultural and Project Economics
Water Supply Pro - Doc Type
Report/Study
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<br />, <br /> <br />, <br /> <br />I <br /> <br />* <br /> <br />Narrows Unit <br />Janllary 1967 <br /> <br />POWER AND MUNICIPAL WATER <br /> <br />No hydroelectric power generation is planned. No specific pro- <br />visions are included for municipal and industrial water; however, <br />future conversion from irrigation supply to municipal and indus- <br />trial water supply is not precluded should the need and desire <br />arise. <br /> <br />DISTRIBUTION SYSTEM <br /> <br />None. Released supplemental water would be carried in Souch <br />Platte River to the diversion works of cooperating irrigation <br />systems which are already in existence. <br /> <br />PROJECT FEATURES <br /> <br />Narrows Dam <br /> <br />Located on South Platte River about 7 miles northwest of <br />Fort Morgan, Colorado <br /> <br />~.... <br /> <br />. . . . . <br /> <br />Rolled earth fill <br />146 ft. <br />22,120 ft. <br />4453.0 m.s.l. <br />8,840,000 cu. yds. <br />21,600 c .f-s. <br /> <br />Height above streambed <br />Crest length . . . . <br />Crest elevation. . . . <br />Volume of embankment . . <br />Spillway capacity (:peak discharge) <br /> <br />Narrows Reservoir <br /> <br />Area top of joint use pool, elevation 4404.3 <br />Shoreline top of joint use pool <br /> <br />14,963 acres <br />40 miles <br /> <br />Narrows Reservoir capacity (acre-feet) <br /> <br />Elev. Initial 50-year* <br />Item (feet) conditions conditions <br /> <br />Streambed 4307.0 0 0 <br />Dead 4339.0 17,350 10,185 <br />Inactive 1+351.0 32,810 21,113 <br />Conservation 4399.0 373,025 355,227 <br />Joint use 4404.3 15,000 75,000 <br />Flood control 4428.5 475,000 475,000 <br />Total capacity 913,185 943,185 <br />Surcharge 4447.0 515,313 515,313 <br />* For space allocation purposes, all sediment is assumed to <br />accumulate below the top of the conservation pool. Sediment <br />accumulation is estimated to be 60,000 acre-feet after 100 years <br />of o:peration. <br /> <br />100-year* <br />conditions <br /> <br />o <br />4,916 <br />22,399 <br />335,870 <br />75,000 <br />475,000 <br />913,185 <br />515,373 <br /> <br />6 <br />
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