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<br />-". ,,,,,,-,----;-,
<br />
<br />002455
<br />
<br />Table 4 PrincIpal reservOIrs In the Yampa River BaSIn, active storage capacItIes and uses
<br />
<br />Capacity
<br />Reservoirs (AF)
<br />
<br />Stillwater Reservoir 6,088
<br />
<br />Yamcolo Reservoir' 8,500
<br />
<br />Allen Basin Reservoir 2,250
<br />Stagecoach Reservoir' 33,275
<br />
<br />Lake Catamount
<br />Fish Creek Reservoir
<br />Steamboat Lake
<br />
<br />7,422
<br />4,167
<br />26,364
<br />
<br />Pearl Lake 5,657
<br />Elkhead Reservoir 13,700
<br />TOTAL 1107,423 I
<br />
<br />Year
<br />Built
<br />
<br />1935
<br />
<br />1981
<br />
<br />1953
<br />1988
<br />
<br />1977
<br />1942
<br />1961
<br />
<br />1959
<br />1974
<br />
<br />Principal Intended Use(s)
<br />
<br />Supplemental irrigation supply
<br />
<br />Supplemental irrigation supply, M&I (excludes
<br />1,000 AF of dead storage)
<br />
<br />Supplemental irrigation supply
<br />
<br />Includes 11,000 AF' for Tri-State G&T,
<br />15,000 AF for recreation and 4,000 AF for M&I
<br />
<br />Used primarily for recreation
<br />
<br />M&I; annual releases have averaged 1,000 AF
<br />
<br />5,000 AF for Hayden Station (Xcel); 21.364 AF '
<br />for recreation and instream flow (2,000-3,300 AF)
<br />
<br />Used exclusively for fisheries and recreation
<br />
<br />Includes 1,668 AF M&I and 8,754 AF industrial
<br />
<br />I
<br />
<br />'Irrigation supply (4,000 AF) exchanged from Stagecoach to Yamcolo for 4,000 AF of
<br />industrial supply contracted to Tri-State from Yamcolo and delivered from Stagecoach.
<br />
<br />Table 5. Historic and current depletions from the Yampa Basin in Colorado by sector
<br />
<br /> Average annual depletions (AF) Hydrologic Basis
<br />Sector Historic Current Chanl!e of Current Depletions
<br />Agriculture (irrigation) 8].116 87,765 6,649 ] 975-] 998 average'
<br />Municipal & Industrial (M&D 4,0]2 5,20] 1,]89 ] 998 consumption
<br />Thermo-electric Generation 8,680 ]6,947 8,267 1985-] 998 average
<br />Exports (trans-basin diversions) 2,388 2,815 427 1975-1998 average
<br />Reservoir Evaooration 7,649 12,543 4,894 Includes stock oonds
<br />TOTAL 103,845 125,271 2],426
<br />
<br />. Taken directly from CROSS calcu]ated data set. Estimated depletions prior to 1975 used
<br />1975-1998 average calculated demands for the same month and hydrologic condition, without
<br />constraint of net cumulative decree. Does not include any fallow lands that may be irrigated in
<br />the future.
<br />
<br />Current depletions identified herein include about 6,400 AF/year by Tri-State Generation and
<br />Transmission Association, Inc., for Craig Station Unit 3. Under the terms ofa Water Management
<br />Plan (Knutson ] 992) developed pursuant to a ] 980 bioIogica] opinion for Craig Station Unit 3
<br />(USFWS 1980), Tri-State agreed to bypass up to 1,000 AF/year of its Wessel Canal direct-flow
<br />water right to augment instream flows for fish. Water is bypassed ifriver flows fall below certain
<br />flow targets: ]50, ] 10 and 1]5 cfs in August, September. and October, respectively.
<br />
<br />Management Plan for Endangered Fishes in the Yampa River Basin
<br />
<br />]9
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