WSP12940

• File Number: 8040.800
• Description: Water Resources for Colorado
• State: CO
• Date: 2/1/2004
• Author: US Dept of Agriculture - Natural Resoruces Conservation Service
• Title: Colorado Basin Outlook Report February 1, 2004
• Water Supply Pro - Doc Type: Data

UPPER COLORADO RIVER BASIN
Streamflow Forecasts - February 1, 2004

<<====== Drier ------ Future Conditions Wetter z'===-=>>
Forecast Point Forecast ==================== Chance Of Exceeding * ===============DK____=
Period 90% 70% 50% (Most Probable) 30% 10% 30-Yr Avg.
(lOOOAF) (lOOOAF) (lOOOAF) (% AVG.) 1l000AF) (lOOOAF) (lOOOAF)
...a.___===:=:======:=======================================:======= ===============...===== =-======_.====---========-=======~===
Lake Granby Inflow APR-JUL 126 153 175 78 200 244 225
Willow Creek Reservoir Inflow APR-JUL 24 31 37 73 43 53 51
Williams Fork Reservoir inflow APR-JUL 59 71 80 84 90 105 95
Dillon Reservoir Inflow APR-JUL 58 98 125 75 152 191 167
Green Mountain Reservoir inflow APR-JUL 172 203 225 80 248 285 280
Muddy Creek blw Wolford Mtn. Resv. APR-JUL 31 42 53 88 66 92 60
Eagle River blw Gypsum APR-JUL 170 222 265 79 317 412 335
Colorado River nr Dotsero APR-JUL 525 870 1100 76 1330 1680 1440
Ruedi Reservoir Inflow APR-JUL 84 104 120 85 139 171 141
Roaring Fork at Glenwood Springs APR-JUL 469 573 650 92 731 860 710
Colorado River nr Cameo APR-JUL 1020 1540 1900 79 2260 2780 2420

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__....._=z==================================================================_======_.=._.===.....=:===::=......................=:.
*** I
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Avg I

UPPER COLORADO RIVER BASIN
Reservoir Storage (1000 AF) - End of January

UPPER COLORADO RIVER BASIN
Watershed Snowpack Analysis - February 1, 2004

Reservoir

Usable I
Capacity I
I

*** Usable Storage
This Last
Year Year

Watershed

Number
of
Data Sites

This Year as % of

Last Yr

Average

DILLON 250.8 221. 9 133.3 221. 3 BLUE RIVER BASIN 9 87 73
LAKE GRANBY 465.6 225.1 35.1 300.7 UPPER COLORADO RIVER BASI 37 95 79
GREEN MOUNTAIN 139.0 62.3 33.1 80.3 MUDDY CREEK BASIN 4 108 81
HOMESTAKE 43.0 21.8 17 .0 27.7 PLATEAU CREEK BASIN 3 155 108
RUEDI 102.0 67.2 46.8 73.7 ROARING FORK BASIN 8 121 93
VEGA 32.0 10.2 4.0 11.6 WILLIAMS FORK BASIN 4 102 87
WILLIAMS FORK 96.8 58.9 7.5 59.5 WILLOW CREEK BASIN 4 97 87
WILLOW CREEK 9.0 6.9 6.9 6.4 TOTAL COLORADO RIVER BASI 48 103 84

* 90%, 70%, 30%, and 10% chances of exceeding are the probabilities that the actual volume will exceed the volumes in the table.

The average is computed for the 1971-2000 base period.

(1) - The values listed under the 10% and 90% Chance of Exceeding are actually 5% and 95% exceedance levels.
(2) - The value is natural volume - actual volume may be affected by upstream water management.