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WSP07461
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Last modified
1/26/2010 2:27:26 PM
Creation date
10/12/2006 2:24:16 AM
Metadata
Fields
Template:
Water Supply Protection
File Number
8143.600.30
Description
John Martin Reservoir - Other Studies
State
CO
Basin
Arkansas
Water Division
2
Date
9/1/1982
Author
Dept of Army
Title
John Martin Dam and Reservoir - Small Hydropower Addition Reconnaissance Report
Water Supply Pro - Doc Type
Report/Study
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<br />~) <br />[" ..'1 <br /> <br />. PRELIMINARY. <br /> <br />This project was built b~LiS.JJ:;:~J oTQecR~a'il~I<;?n~ is authorized to <br />divert a maximum of 120,000 acre-feet per year into the Arkansas River Basin. <br />The project is restricted to a longterm (34 year) average annual diversion of <br />about 69,200 acre-feet. As of 1981, the project is essentially fully <br />operational. The effect of these diversions on the inflow to John Martin will <br />perhaps be noticed after a few years of operational experience is gained with <br />the use of the transmountain flows. <br /> <br />:.0 <br />CJl <br />J-I. <br /> <br />IV. <br /> <br />Hydropower Addition Project Arrangement. ~ <br /> <br /> <br />Location of Powerhouse. ~ <br /> <br />A. <br /> <br />1. This study evaluation only considered the feasibility of modifying <br /> <br /> <br />the existing outlet conduits to accommodate the necessary hydroelectric <br /> <br /> <br />equipment. No consideration was given to constructing a separate outlet <br /> <br /> <br />conduit to be used exclusively for power generation. The normal irrigation <br /> <br /> <br />releases are made through any of the six existing outlet conduits, however, <br /> <br /> <br />the larger sluicing conduits are preferred over the two regulating conduits <br /> <br /> <br />because of the larger capacity. The choice of which sluicing conduit to be <br /> <br /> <br />used for releases is made by rotating their use periodically to help remove <br /> <br /> <br />sediment deposits that form at the inlet and outlets of the conduits. The <br /> <br /> <br />discharge rating curves for the sluicing and regulating conduits are shown on <br /> <br />plate 2. <br /> <br />2. The concrete portion of the dam was originally constructed with <br /> <br /> <br />approximately forty feet of steel lining incorporated into the upstream end of <br /> <br /> <br />the outlet works conduits. Consideration was given to locating the turbine at <br /> <br /> <br />the end of the existing lining to eliminate the need for new steel penstock, <br /> <br /> <br />however, it was assumed that the cost of additional concrete excavation <br /> <br /> <br />required for the machinery and the loss in available head would outweigh the <br /> <br /> <br />new penstock cost. <br /> <br />3. This analysis assumed that the least costly location for the <br /> <br /> <br />turbine and associated equipment would be near the exit portal of the <br /> <br /> <br />northernmost sluicing conduit (located in monolith :<17).. In addition to <br /> <br /> <br />reducing the amount of concrete excavation required for installation, this <br /> <br />6 <br />
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