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WSP05537
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Last modified
1/26/2010 2:18:47 PM
Creation date
10/12/2006 1:06:13 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
1/1/1967
Title
Report on the Narrows Unit Colorado South Platte Division Missouri River Basin Project part 1
Water Supply Pro - Doc Type
Report/Study
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<br />I" i"H''':" <br />J;,j..J <br /> <br />. <br /> <br />Plan of Development <br /> <br />Three dikes would be required across low areas to maintain a <br />minimum crest elevation of 4453, the dam crest elevation, around the <br />reservoir. The dikes were designed with a crest elevation of 4453, <br />a crest width of 30 feet, an upstream slope of 2 to 1 protected by <br />a 24-inch layer of rock riprap on six inches of gravel bedding, and <br />a downstream slope of 2 to l. The Riverside Dike would be a 6,100- <br />foot extension of the left abutment of Narrows Dam constructed <br />generally in conjunction with the south bank of the existing Riverside <br />Canal. Relocated State Highway 144 would be on its crest. The 475- <br />foot-long Saddle Dike would be located about one-half mile south of <br />the right abutment of Narrows Dam on its projected axis. The Layton <br />Dike would begin about one mile south of the right abutment of Narrows <br />Dam near the southeast edge of the existing Bijou Reservoir No.2. It <br />would extend 6,l60 feet around the south edge of that reservoir and <br />would be north of the existing Layton Lateral. <br /> <br />. <br /> <br />Electrical power for operating the facilities at the damsite <br />could be supplied by either the Morgan County Rural Electric Association <br />or the Public Service Company of Colorado since both organizations <br />have transmission lines in the vicinity. No arrangement has been made <br />for service with either, but the plan assumes that such an arrangement <br />will be consummated at an appropriate time. The plan does provide for <br />approximately three-fourths of a mile of l3.8 kv. line to be con- <br />structed from the point of delivery to the outlet works and to per- <br />manent operating facilities. <br /> <br />Relocations in the reservoir area would involve the main Chicago- <br />Denver line of the Union Pacific Railroad, State Highway 144, a <br />county road, power and telephone lines, oil and gas pipelines, and a <br />30-grave cemetery. <br /> <br />Subject to negotiations with the railroad company, it is planned <br />to construct 32.22 miles of new line around the north side of the <br />reservoir to replace 30.34 miles of existing railroad along the north <br />bank of the river. For estimating the relocation cost, current <br />standards of construction as furnished by the Railroad Company were <br />used. Credit for betterments over equivalent replacement will be <br />obtained during negotiation. Salvage value of the old line also <br />should reduce the total cost of the relocation. <br /> <br />The cost estimate for relocation of State Highway No. l44 <br />reflects some improvement of the road to bring it to current <br />standards. The additional cost over that for equivalent replace- <br />ment would be $l39,OOO. Morgan County is reconstructing the county <br />road to be relocated and the cost 9f relocation is based on the <br />county standards. <br /> <br />. <br /> <br />20 <br />
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