WSP12948

• File Number: 8040.800
• Description: Water Resources for Colorado
• State: CO
• Date: 5/1/2004
• Author: US Dept of Agriculture - Natural Resoruces Conservation Service
• Title: Colorado Basin Outlook Report May 1, 2004
• Water Supply Pro - Doc Type: Data

..................................................................................................................................

UPPER COLORADO RIVER BASIN
Streamflow Forecasts - May I, 2004

...~.............................................._...............................................................................
<<...... Drier ..~... Future Conditions Wetter .....>> ,
,
Forecast Point Forecast .................... Chance Of Exceeding * ...................... ,
Period 90% 70% 50% (Most Probable) 30% 10% I 30-Yr Avg.
(1000AF) (1000AF) (1000AF) (% AVG.) I (1000AF) (1000AF) I (lOOOAF)
==...............=......=~.......__g=.......z...........D.........== .......................f....................................-
Lake Granby Inflow APR-JUL III 122 130 58 , 139 152 225
I
willow Creek Reservoir Inflow APR-JUL 16.4 22 27 53 32 40 51
Williams Fork Reservoir inflow APR-JUL 48 56 62 65 68 78 95
Dillon Reservoir Inflow APR-JUI, 72 88 100 60 112 128 167
Green Mountain Reservoir inflow APR-JUL 147 166 180 64 194 216 280
Muddy Creek blw Wolford Mtn. Resv. APR-JUI, 23 26 28 47 30 34 60
Eagle River blw Gypsum APR-JUI, 179 202 220 66 239 270 335
Colorado River nr Dotsero APR-JUI, 540 730 860 60 985 1185 1440
Ruedi Reservoir Inflow APR-JUI, 59 71 80 57 91 109 141
Roaring Pork at Glenwood Springs APR-JUI, 337 402 450 63 500 579 710
Cqlorado River nrCameo APR-JUL 865 1180 1400 58 1620 1940 2420

....................................................--............................................................................

I
I
..........................................................................................................................--......
*** I
I
Avg I

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

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

Reservoir

Usable ,
Capacity'
,

*** Usable Storage
This Last
Year Year

Watershed

NUIllber
of
Data Sites

This Year as % of

Last Yr

Average

........................................................................ .........................................................

DILLON 250.8 209.7 125.3 212.8 BLUE RIVER BASIN 9 53 62
LAKE GRANBY 465.6 163.4 32.2 259.5 UPPER COLORADO RIVER BASI 35 44 51
GREEN MOUNTAIN 139.0 68.5 35.,8 54.3 MUDDY CREEK BASIN 3 29 26
HOMESTAKE 43.0 13.6 17.2 16.8 PLATEAU CREEK BASIN 3 122 94
RUEDI 102.0 65.5 49.4 59.7 ROARING FORK BASIN 8 78 55
VEGA 32.0 16.2 8.8 16.6 WILLIAMS FORK BASIN 4 44 53
WILLIAMS FORK 96.8 63.8 12.5 55.3 WILLOW CREEK BASIN 3 37 62
WILLOW CREEK 9.0 6.6 6.5 5.9 TOTAL COLORADO RIVER BASI 46 54 56

..........................................................................................................=.......................

* 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.