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WSP02949
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Last modified
1/26/2010 12:47:50 PM
Creation date
10/11/2006 11:27:18 PM
Metadata
Fields
Template:
Water Supply Protection
File Number
8240.200.44.A.1
Description
Green Mountain Reservoir
State
CO
Basin
Colorado Mainstem
Water Division
5
Date
1/1/1999
Author
CWCB
Title
Green Mountain Reservoir Historic Users Pool (HUP) Draft Operating Criteria
Water Supply Pro - Doc Type
Publication
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<br />inflow into Estes Park for this period was !!be. e IF. el'll.ge !It 140 percent. The February I <br />snowpack water content measurement was -M4 percent of average which resulted in an April- <br />July most probable runoff forecast volume of 105,e99 acre-feet. <br /> <br />Precipitation over the Big Thompson River Basin in February eentimlecl ,...ell !!be. e average <br />at~ percent. March precipitation for the Lake Estes watershed was ab/lYe a.el'll.ge!lt 159 <br />percent of the 1966-1995 average. April I snowpack water content measurements were +53 <br />percent of average. The April-July most probable runoff forecast volume relftftiftea Ilt 19S,999 <br />acre-feet. <br /> <br />April was dry with precipitation at +:39 inches or 'B percent of average. However, inflows <br />were H5 percent of average. May I snow water content measurements aeerell3ea t6 <br />+4e percent of average and the April-July most probable runoff forecast volume was aeereasea <br />te 95,809 acre-feet. <br /> <br />May was wet with precipitation at B9 inches or m percent of average. The Big Thompson <br />River inflow, in excess of the minimum required outflow below Lake Estes, was diverted as <br />skim water through Olympus Tunnel on April 9 and continued when Olympus Tunnel capacity <br />was available through September. For water year 1998, 5;m acre-feet of water was diverted <br />as skim water through the east slope system. Sinee Lllke GUllIby '..113 at eal'llf)it) !lilt! 31'illiftg <br />arid Ol)n~~tt.) TttnllCl .na3 at ~aJ'a~ity .nth n~Jt :dol'G tntl1~6tmtft:in di\Cf'3ian .98.<<;[, MJ611t <br />62,8ee litre fcet of !l{ailable; 3ktill nater ..83 hYPa3Jea. The. JiM eh8rg~ de.li.ery of CDT <br />inigat1ol'l .yater inelC~ea the tm161tl1t ofb] I'tt:JJea Jkim natty dttt t6 OI).Ln.pll3 Tttn1X.l bemg <br />at eal'llf)it, ..i/h CBT Pwjeet ..llter. Operation skim was only I~ percent of the 1966-1995 <br />average. <br /> <br />The inflow peaked on Jtlne II at ~ ft'/s, and this was 98 percent of the 30 year average. <br />June precipitation was Be percent of average and inflows were ++5 percent of average. <br /> <br />Releases to the river below Olympus Dam peaked at m ftl/s on June 7. Dtte t6 the hi!ft <br />int16 ~.:J t6 Lalre E3k.J ana Ol)"n~ 'fttlmcl at '8.1'~ y'/itk cnT Project y/ftter fr6tl'l the nest <br />:dol'e, it nMt ne~'JJll!) to MttIoc rdeMtJ to the Dig Themp3611 Ri"er great,! than tftt: reqt:1:iKd <br />mi:ninltiftl fIe n. <br /> <br />August precipitation at Lake Estes was nmek "de.. a.erllge at 96 percent of average. Total <br />precipitation for the water year (October-September) was ~ inches or +63- percent of <br />average. The inflow above Lake Estes was 198,299 acre-feet for water year 1998, and this <br />was HG percent of average. . <br /> <br />Estes Powerplant generation totaled 92,799,999 kilowatt-hours for the water year and was <br />19,289,999 kilowatt-hours below average. <br /> <br />filC1l1011C: CBTAoP98.DFT <br /> <br />15 <br /> <br />Proliminory Woridns Draft July S. t999 <br />
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