WSP12945

• File Number: 8040.800
• Description: Water Resources for Colorado
• State: CO
• Date: 1/1/2003
• Author: US Dept of Agriculture - Natural Resoruces Conservation Service
• Title: Colorado Basin Outlook Report January 1, 2003
• Water Supply Pro - Doc Type: Data

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SAN MIGUEL, DOLORES, ANIMAS, AND SAN JUAN RIVER BASINS
Streamflow Forecast.s - January 1, 2003

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Lilylands Reservoir Inlet

1 <<====== Drier ====== Future Conditions
1
Forecast 1 ==================== Chance Of Exceeding * ======================
Period I 90% 70% I 50% (Most Probable) I 30% 10% 1 30-Yr Avg.
1 (1000AF) (1000AF) 1 (1000AF) (% AVG.) I (1000AF) (1000AF) 1 (1000AF)
=========~==========================================================1=======================1=====================================
Dolores River at Dolores APR-JUL 93 151 1 210 79 1 268 326 265
McPhee Reservoir inflow APR-JUL 102 176 1 250 78 I 323 400 320
San Miguel River nr Placerville APR-JUL 51 79 1 107 81 1 135 162 132
Gurley Reservoir Inlet APR-JUL 2.2 8.0 I 12.0 73 1 16.0 22 16.5
APRIL 1 1. 25 75 1 1. 66
MAY 1 6.50 74 1 8.83
JUNE I 3.50 75 I 4.67
JULY I 0,75 57 I 1.32
APR-JUL 0.39 1.69 1 2,57 73 I 3,45 4.75 3.53
APRIL 1 0.25 54 1 0.46
MAY 1 1.60 98 1 1.64
JUNE 1 0 . 65 63 1 1. 04
JULY I 0.15 40 I 0.38
APR-JUL 0.77 1.06 I 2.00 70 I 2.94 4.32 2.86
APRIL 1 0.15 38 1 0.40
MAY 1 1.10 83 I 1.32
JUNE 1 0,50 58 I 0.87
JULY I 0.15 56 I 0.27
APR-JUL 11.7 26 I 35 66 1 44 58 53
APR-JUL 13.8 34 1_ 48 70 1 62 82 69
APR-JUL 160 228 I 280 69 I 338 433 405
APR-JUL 44 107 1 150 65 I 193 256 230
APR-JUL 42 98 1 136 66 1 174 230 205
APR-JUL 163 370 1 510 64 1 650 857 800
APR-JUL 124 247 I 330 75 1 413 536 440
APR-JUL 14,0 31 I 42 72 I 53 70 58
APR-JUL 6.2 13.6 1 18.6 74 I 24 31 25
APR-JUL 2,1 18,7 1 30 75 1 41 58 40
APRIL I 6.00 103 I 5.80
MAY I 15.0 94 1 15.9
JUNE 1 7.0 51 I 13.7
JULY I 2.00 44 1 4.60

Wetter =====>>

Forecast Point

Cone Reservoir Inlet

Rio Blanco at Blanco Diversion
Navajo River at Oso Diversion
San Juan River nr Carracus
Piedra River nr Arboles
Vallecito Reservoir Inflow
Nav~jo Reservoir Inflow
Animas River at Durango
Lemon Reservoir Inflow .._._..._,.
La Plata River at Hesperus
Mancos River nr Mancos

====================~.===============--=.===============_====..a._._...._=_==========_===_======._====._._===============__=======

GROUNDHOG
JACKSON GULCH
LEMON
MCPHEE
NARRAGUINNEP
VALLECITO

SAN MIGUEL, DOLORES, ANIMAS, AND SAN JUAN RIVER BASINS 1 SAN MIGUEL, DOLORES, ANIMAS, AND SAN JUAN RIVER BASINS
Reservoir Storage (1000 AF) - End of December 1 Watershed Snowpack Analysis - January 1, 2003
=-===-...======--.-.-.=-======--.-.-=-=---.-.===-=-======_._=..==...==az=====...==_=._==_===_=====_=========_.a=====_....___==_=_.
Usable I *** U$able Storage *** I Number This Year as % of
Capacity 1 This Last 1 Watershed of ====~~=~=========
1 Year Year Avg 1 Data Sites Last Yr Average
==-=...===-================================_===m==_=_===_.._======m=====I ==m==._==.___=============_==================_~.~==m=====
I
I
1
I
I
I

21. 7
10.0
40.0
381. 2
19.0
126.0

3.8
2.5
5,8
159,1
7.8
32,5

11.1
2.3
13.0
206.4
18.0
54.8

12.0
4,6
20.1
271.1
12.7
58.6

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

7
4
3
3
16

124
116
112
171
128

80
103
95
76
84

Reservoir

* 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.

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(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,