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SWSIReportNov2006
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SWSIReportNov2006
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Last modified
10/18/2011 11:31:30 AM
Creation date
10/12/2007 10:07:22 AM
Metadata
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Template:
Drought Mitigation
Title
Colorado Water Supply Conditions Update
Date
11/20/2006
Description
Water Availability Task Force Meeting Presentation
Basin
Statewide
Drought Mitigation - Doc Type
Presentation
Document Relationships
ClimateUpdateNov2006
(Attachment)
Path:
\Drought Mitigation\Backfile
LongTermOutlookNov2006
(Attachment)
Path:
\Drought Mitigation\Backfile
NRCSNov2006
(Attachment)
Path:
\Drought Mitigation\Backfile
WATFAgendaNov2006
(Attachment)
Path:
\Drought Mitigation\DayForward
WATFMeetingSummaryNov2006
(Attachment)
Path:
\Drought Mitigation\DayForward
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<br />COLORADO BASIN <br /> <br />Basinwide Conditions Assessment <br />The SWSI value for the month of October was 1.4. <br />Flow at the gaging station Colorado River near Dotsero was <br />1245 cfs, as compared to the long-term average of 1300 cfs. <br />Storage in Green Mountain, Ruedi, and Williams Fork <br />reservoirs totaled 1020/0 of normal as of the end of October. <br /> <br />Outlook <br />October was a wet month for the Colorado River <br />basin, with precipitation above 1500/0 of average for the <br />entire basin (information from National Weather Service). <br />Several locations on the western side of the basin received <br />record monthly rainfalls, in large part driven by an intense <br />storm that occurred on October 6. Twenty-four hour rainfall <br />records were surpassed throughout far western Colorado <br />and eastern Utah, with some locations receiving over two <br />inches of rain over night. Flash flooding was prevalent and <br />the mainstem Colorado River jumped from 4000 cfs to a <br />peak of 15,000 cfs overnight at the Utah state line. <br />River flows are above average throughout much of <br />the basin, with the western, lower tributaries benefiting the <br />most from the heavy rainfall. Early mountain snowpack is <br />average to above average for the Colorado River basin, with <br />a few tributaries showing below average snowfall, such as <br />the Fryingpan River basin. <br /> <br />Administrative/Manaaement Concerns <br />The 2006 Irrigation Water Year ended without an <br />administrative river call from the Grand Valley. As the new <br />Water Year begins, the Shoshone Power Plant river call <br />remains on, with no swing right. <br /> <br />I- <br />W <br />S <br /> <br />w <br />:3 <br /><( <br />> 0.0 <br />>< <br />w <br />o <br />z <br />- -1.0 <br />>- <br />a:: <br />o <br />-2.0 <br /> <br />ill <br /><D <br />LL <br />ill 500,000 <br />U <br /><( <br />g 400,000 <br />---l <br />LL <br />~ 300,000 <br />i= <br /><( <br />~ 200,000 <br />:J <br />U <br /> <br />Q) <br />~ 80,000 <br /><D <br />t; <br />ctl <br /><D- <br />~ 60,000 <br />o <br />U3 <br /><D <br />::c <br />~ 40,000 <br />:J <br /> <br />7 <br /> <br />Nov-06 <br /> <br />COLORADO BASIN SINSI HISTORY <br /> <br />4.0 <br /> <br /> <br />3.0 <br /> <br />2.0 <br /> <br />1.0 <br /> <br />-3.0 <br /> <br />-4.0 <br />Jan-97 Jan-98 Jan-99 Jan-OO Jan-01 Jan-02 Jan-03 Jan-04 Jan-05 Jan-06 <br /> <br />MONTH / YEAR <br /> <br />COLORAOO RIVER NR. OOTSERO, FLOW BY WATER YEAR <br /> <br />700,000 <br /> <br /> <br />600,000 <br /> <br />100,000 <br /> <br />o <br />Oct <br /> <br />Nov <br /> <br />Dee <br /> <br />Jan <br /> <br />Feb <br /> <br />March <br /> <br />April <br /> <br />--e- \!VET (1984) <br /> <br />----a- A VG <br /> <br />~ 2007 <br /> <br />~ DRY (2002) <br /> <br />REPRESENTATIVE RESERVOIRS <br /> <br />120,000 <br /> <br /> <br />100,000 <br /> <br />20,000 <br /> <br />o <br /> <br />Green rvbuntain <br /> <br />Ruedi <br /> <br />Wiliams Fork <br /> <br />II Avg. 10/31 Contents <br /> <br />1110/31/06 Contents <br />
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