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WSPC65
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Last modified
1/26/2010 4:15:40 PM
Creation date
4/22/2007 10:13:16 AM
Metadata
Fields
Template:
Water Supply Protection
File Number
8240.200.46.L
Description
Colorado River Threatened-Endangered - RIPRAP - Ruedi Reservoir - General Reports-Maps-Data-Etc
State
CO
Basin
Colorado Mainstem
Water Division
5
Date
6/23/2000
Author
Various
Title
Ruedi Reservoir Annual Reports 2000-2003 - BOR-US FWS - Water Released for Endangered Fish - With Related Correspondence - 06-23-00 through 05-23-03
Water Supply Pro - Doc Type
Report/Study
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<br />003080 <br /> <br />Page 4 <br /> <br />1999 CWCS Ruedi Report <br /> <br />because flows have been moderated for several years, recent fluctuations in the flow are much <br />more apparent and can impact routines established by the fishing community. <br /> <br />Two concerns have been expressed related to the fluctuations in the flows; access and game <br />species viability. First, both commercial outfitters and private fisherman express difficulty in <br />wading the entire surface area of the Fryingpan once flows exceed 250 cfs, limiting the portion <br />of river that is accessible for fishing and access to the opposite shoreline. This, compounded by <br />the fact that access to about half of the fourteen miles of river are controlled by private lands, can <br />lead to overcrowding along portions of the shoreline and diminish the user's experience. During <br />the 1999 period of release for the endangered fish (Sept. 1 through Nov. 2), there were a total of <br />21 days, Oct. 13 through Nov. 1, when flows were more than 5 cfs above 250 cfs. The impacts <br />of endangered fish releases on Fryingpan fishing in 1999 are limited, however, in the long-term, <br />interest in fishing the Fryingpan during the later portion of the season by both local and non-local <br />users may decrease. <br /> <br />The Roaring Fork and Colorado Rivers also support a substantial commercial fishing industry <br />based on float fishing from rafts and drift boats. There is some limited benefit to these activities <br />from the fish releases in terms of additional volume within the rivers, which keep temperatures <br />lower and water at levels sufficient for boating. No effects were expressed or observed related to <br />this activity during this past season, and no cumulative effects are foreseen. <br /> <br />No negative impacts to the fisheries ofthe Fryingpan or Roaring Fork Rivers have been observed <br />due to endangered fish releases from Ruedi Reservoir, nor are any future or cumulative effects <br />anticipated. The Colorado Division of Wildlife feels there are even some potential benefits from <br />the releases. For example, releases in August and September help maintain flows along the <br />Roaring Fork, which traditionally drops very low at this time of year and results in large fish die- <br />offs. <br /> <br />Hydropower Production <br /> <br />Ruedi Water and Power Authority (RWPA) is licensed by the Federal Energy Regulatory <br />Commission (FERC) to operate a hydropower facility at Ruedi Dam and Reservoir in <br />coordination with Reclamation. The FERC license recognizes that RWPA's hydropower <br />production objectives are subordinate to the operation of Reclamation's facilities, but allows <br />R WP A to make beneficial use of any flows that result from the operation of Ruedi Dam and <br />Reservoir. <br /> <br />RWPA's facility has a maximum capacity of approximately 250 cfs. Releases above this level <br />must bypass the facility. In the absence of releases for the endangered fish, Ruedi releases <br />during the late summer are required to be the lesser of 110 cfs or inflow, which is often below <br />110 cfs. Consequently, increased flows due to releases for endangered fish up to 250 cfs are an <br />opportunity for increased power production, which, if utilized, benefits R WP A. Releases above <br />250 cfs in the summer and fall may result in less generation later during the winter. <br /> <br />During 1999, endangered fish releases were above the minimum required release of 110 cfs or <br />inflow for all 63 days of the releases. A total of20,057 acft was released above what would have <br />been released if flows had been kept at the minimum. For 53 of the 63 days, releases were above <br />
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