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

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GUNNISON RIVER BASIN
Streamflow Forecasts - February 1, 2004

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I <<====== Drier ====== Future Conditions Wetter .-.-.>>
I
Forecast Point Forecast I ============z======= Chance Of Exceeding * ..=..-..-.-----.--..=-
Period I 90% 70% 50% (Most Probable) 30% 10% 30-Yr Avg.
I (lOOOAF) (lOOOAF) I (lOOOAF) (% AVG.) (lOOOAF) (lOOOAF) (1000AF)
====-===============================================================1====================--- ==...===_...=..==...============.=_=3
Taylor River blw Taylor Park Resv APR-JUL 51 76 I 92 89 108 133 103
I
Slate River nr Crested Butte APR-JUL 66 80 I 89 100 98 112 89
I
East River at Almont APR-JUL 120 156 I 180 94 202 242 192
I
Gunnison River nr Gunnison APR-JUL 220 295 350 90 405 480 390
Tomichi Creek at Sargents APR-JUL 7.9 17.0 24 75 31 40 32
Cochetopa Creek b1w Rock Creek APR-JUL 4.6 9.6 13.0 75 16.4 21 17.3
Tomichi Creek at Gunnison APR-JUL 24 43 60 74 79 113 81
Lake Fork at Gateview APR-JUL 60 93 115 91 137 170 126
Blue Mesa Reservoir Inflow APR-JUL 330 510 630 88 750 930 720
Paonia Reservoir Inflow MAR-JON 43 74 100 100 130 181 100
APR-JUL 37 72 102 100 138 200 102
N.F. Gunnison River nr Somerset APR-JUL 189 252 300 98 352 436 305
Surface Creek nr Cedaredge AFR-JUL 11.0 14.3 17.0 99 20 26 17.1
Ridgway Reservoir Inflow APR-JUL 66 82 95 93 110 136 102
Uncompahgre River at Co1ona AFR-JUL 80 105 123 89 143 175 139
Gunnison River nr Grand Junction APR-JUL 790 1150 1400 90 1650 2010 1560

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

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GUNNISON RIVER BASIN
Watershed Snowpack Analysis - February 1. 2004

I
I
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Usable I *** Usable Storage *** I Number This Year as , of
Capacity I This Last I Watershed of ...._._........=_
I Year Year Avg I Data Sites Last Yr Average
....._-======-==========================================================1========================......_._=__....===.=======_.a..=
BLUE MESA 830.0 382.5 290.9 493.3 I UPPER GUNNISON BASIN 15 137 99
I
8.2 I
I
3.4 I
I
1.8 I
I
113.4 I
I
4.7 I
I
60.2 I
I
66.7 I
I

Reservoir

CRAWFORD

14.3

3.1

4.0

FRUITGROWERS

4.3

1.6

1.4

FRUITLAND

9.2

0.1

0.5

MORROW POINT

121. 0

110.9

1l0.4

PAONIA

18.0

3.5

4.5

RIDGWAY

83.2

70.8

61.3

TAYLOR PARK

106.0

71.8

40.5

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SURFACE CREEK BASIN

3

155

108

UNCOMPAHGRE BASIN

4

135

104

TOTAL GUNNISON RIVER BASI

19

136

100

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

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

(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.