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SWSIReportAug2008
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SWSIReportAug2008
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Last modified
10/17/2011 1:25:21 PM
Creation date
8/21/2008 11:24:47 AM
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Template:
Drought Mitigation
Title
Colorado Water Supply Conditions Update
Date
8/21/2008
Description
August SWSI Report
Basin
Statewide
Drought Mitigation - Doc Type
Presentation
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YAMPAIWHITE BASIN <br />Basinwide Conditions Assessment <br />The SWSI value for the month was 1.8. Flow at the <br />gaging station Yampa River at Steamboat was 498 cfs, as <br />compared to the long-term average of 372 cfs. <br />July precipitation was well below average for the <br />Yampa, White, and North Platte River basins. Precipitation <br />for the month, as measured at the SNOTEL sites operated <br />by the NRCS, was reported at approximately 35% of <br />average for both the YampalWhite River basins and the <br />North Platte River basin. Year-to-date precipitation remains <br />above average, however, and is reported at 104% of <br />average for the combined Yampa, White, and North Platte <br />River basins. <br />Warm weather continued throughout July and no <br />remaining snowpack was reported at the NRCS SNOTEL <br />sites at the end of the month. Due to high winter snowpack, <br />however, average to above-average runoff for the Yampa, <br />White, and North Platte River basins was predicted by <br />NRCS for July. Most streams were running slightly above <br />average for the month, as predicted by NRCS, but were <br />approaching average conditions by the end of July. <br />Outlook <br />Yamcolo Reservoir and Elkhead Reservoir were <br />reported at approximately 65% and 95% of capacity, <br />respectively, at the end of July. Fish Creek Reservoir <br />reached 100% of capacity the first week in July, was spilling <br />most of the month, and was reported at 99.8% of capacity at <br />the end of the month. Water stored in Fish Creek Reservoir <br />is used primarily for municipal purposes, Yamcolo Reservoir <br />for irrigation purposes, and Elkhead Reservoir for municipal, <br />industrial, and recreation purposes, as well as fish recovery <br />releases. <br />Administrative/Management Concerns <br />Calls were placed on the following streams, which <br />remained under administration at the end of the month: <br />Middle Hunt Creek (May 29), Bear River (June 6), <br />Talamantes Creek (June 13), West Fish Creek (June 20), <br />Little Bear Creek (July 7), and South Hunt Creek (July 9). <br />Division 6 continues to monitor streamflow on the lower <br />Yampa River in anticipation of potential releases from <br />Elkhead Reservoir by the Colorado River District in late <br />summer/early fall. Releases are made to augment flows and <br />enhance habitat for the endangered fish species in the critical <br />habitat reach of the Yampa River (from Craig to the <br />confluence with the Green River at Echo Park). District 44 <br />water commissioners are responsible for protecting the water <br />released from Elkhead Reservoir through the Yampa River <br />critical habitat reach. <br />Public Use Impacts <br />Area reservoirs are open for the season, with good <br />fishing reported. <br />Aug-08 <br />8 <br />
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