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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SAN MIGUEL, DOLORES, ANIMAS, AND SAN JUAN RIVER BASINS
Streamflow Forecasts - February 1, 2004

._.c_.====._=_==========================================================================_===EZ__===_=====_====S____==============_

<<====== Drier ====== Future Conditions Wetter =_.==>>
Forecast Point Forecast ==================== Chance Of Exceeding * ===___a____=__====_===
Period 90% 70% 50% (Most Probable) 30% 10% 30-Yr Avg.
(lOOOAF) (lOOOAF) (1000AF) (% AVG.) (1000AF) (lOOOAF) (1000AF)
=.....=====:=..-============================================:==-===: =============s========= ___s=...========_..a=====__===.==.===
Dolores River at Dolores APR-JUL 155 210 245 93 280 335 265
McPhee Reservoir inflow APR-JUL 180 250 295 92 340 410 320
San Miguel River nr Placervil1e APR - JUL 80 107 125 95 143 170 132
Gurley Reservoir Inlet APR - JUL 8.4 12.9 16.0 97 19.5 24 16.5
APRIL 1.66 100 1. 66
MAY 8.50 96 8.83
JUNE 4.50 96 4.67
JULY 1.34 102 1.32
Cone Reservoir Inlet APR-JUL 1.47 2.70 3.50 99 4.30 5.50 3.53
APRIL 0.46 100 0.46
MAY 1.62 99 1.64
JUNE 1.04 100 1.04
JULY 0.38 100 0.38
Lilylands Reservoir Inlet APR-JUL 1.42 2.20 2.70 94 3.20 4.00 2.86
APRIL 0.40 100 0.40
MAY 1.20 91 1.32
JUNE 0.80 92 0.87
JULY 0.30 111 0.27
Rio Blanco at Blanco Diversion AFR-JUL 30 45 55 104 65 80 53
Navajo River at Oso Diversion APR-JUL 39 57 70 101 83 101 69
San Juan River nr Carracus APR-JUL 257 354 430 106 513 648 405
Piedra River nr Arboles APR-JUL 159 210 245 107 280 330 230
Vallecito Reservoir Inflow APR-JUL 139 178 205 100 230 270 205
Navajo Reservoir Inflow APR-JUL 520 720 855 107 990 1190 800
Animas River at Durango AFR-JUL 280 375 440 100 505 600 440
Lemon Reservoir Inflow APR-JUL 33 47 57 98 67 81 58
La Plata River at Hesperus AFR-JUL 9.2 15.6 20 80 24 31 25
Mancos River nr Mancos AFR-JUL 12.4 25 33 83 41 54 40
APRIL 6.00 103 5.80
MAY 15.0 94 15.9
JUNE 9.0 66 13.7
JULY 3.00 65 4.60

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Reservoir

SAN MIGUEL, DOLORES, ANIMAS, AND SAN JUAN RIVER BASINS I SAN MIGUEL, DOLORES, ANIMAS, AND SAN JUAN RIVER BASINS
Reservoir Storage (1000 AF) - End of January I watershed Snowpack Analysis - February 1, 2004
_=_..=====s._.======_=========================================================.=======-===..==..._====.-......_--==--...._=...=-=.
Usable I *** Usable Storage *** I Number This Year as % of
Capacity I This Last I Watershed of ==_..___.sa=...==
I Year Year Avg I Data Sites Last Yr Average
..._a_======_======_=_:=============================================z===I==.====~===..~=.=._=.=_=~.===.==.=z._======__~s..===c====
I
I
I
I
I
I

21.7
10.0
40.0
381. 2
19.0
126.0

7.0
2.9
9.4
170.9
10.9
52.4

3.8
2.6
6.3
160.2
7.8
35.6

12.0
4.6
20.2
274.4
12.7
59.4

ANIMAS RIVER BASIN
DOLORES RIVER BASIN
SAN MIGUEL RIVER BASIN
SAN JUAN RIVER BASIN
TOTAL SAN MIGUEL, DOLORES
AN JUAN RIVER BASINS

9
7
5
4
24

157
134
146
222
162

97
93
98
127
103

GROUNDHOG
JACKSON GULCH
LEMON
MCPHEE
NARRAGUINNEP
VALLECITO

a_.=___=======:==========================================================.-==:==:==.-=.-.--==-=...-.....-==:-=._...=-===-=====----

* 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.