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

SAN MIOV5L, DOLORES, ANIMAS, AND SAN JUAN RIVER BASINS
Streamflow Forecasts - May 1, 2004

............................_*............-_.................................--...................................................

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

I <<...... Drier ...... Future Conditions
I
Porecast I .................... Chance Of Exceeding *
Period II 90% 70% I 50% (Most Probable)
(lOOOAF) (lOOOAF) (lOOOAF) (% AVG.)
~=...........=............................-.........................I..........~............
Dolores River at Dolores APR-JUL 122 153 I 175 66
McPhee Reservoir inflow APR-JUL 143 180 205 64
San Miguel River nr Placerville APR-JUL 68 87 100 76
Gurley Reservoir Inlet MAY-JUL 5.2 7.6 9.3 63
MAY 6.90 78
JUNE 2.10 45
JULY 0.33 25
MAY-JUL 1.25 1.59 1.82 60
MAY 1.22 74
JUNE 0.50 48
JULY 0.10 26
MAY-JUL 0.61 1.16 1.53 62
MAY 1.00 76
JUNE 0.43 49
JULY 0.10 37
APR-JUL 30 38 43 81
APR-JUL 39 49 56 81
APR-JUL 211 268 310 77
APR-JUL 162 179 190 83
APR-JUL 103 137 170 83
APR-JUL 455 560 625 78
APR-JUL 230 310 350 80
APR-JUL 42 49 53 91
APR-JUL 14.4 16.5 18.0 72
APR-JUL 14.0 22 28 70
MAY 13.0 82
JUNE 7.3 53
JULY 2.00 44

Forecast Point

Cone Reservoir Inlet

Lilylands Reservoir Inlet

Rio Blanco at Blanco Diversion
Navajo River at Oso Diversion
San Juan River nr Carracus
piedra River nr Arboles
Va11ecito Reservoir Inflow
N~vajo Reservoir Inflow
Animas River at Durango
Lemon Reservoir Inflow
La Plata River at Hesperus
~ancos River nr Mancos

Wetter .....>>
...............-......
30% 10% 30-Yr Avg.
(1000AF) (1000AF) (1000AF)
......-....-.................~.......
196 226 265
230 265 320
113 132 132
11.0 13.4 14.8
8.83
4.67
1.32
2.02 2.42 3.06
1.64
1.04
0.38
1.93 2.43 2.45
1.32
0.87
0.27
48 56 53
63 73 69
356 428 405
203 218 230
205 235 205
690 790 800
410 470 440
57 64 58
19.7 22 25
34 42 40
15.9
13.7
4.60

is....................... ................ .... ... ........ ................................ ........ ..... ........... ..... ....... ..... .-.. '.
SAN MIGV5L, DOLORES, ANIMAS, ANP SAN JUAN RIVER BASINS I SAN MIGtlEL, DOLORES, ANIMAS, AND SAN JUAN RIVER BASINS
Reservoir Storage (1000 AF) - End of April I Watershed Snowpack Analysis - May 1, 2004
Q......................................~.........................................................................................'.
Usable I *** Usable Storage *** I Number This Year as % of
Reservoir Capacity I This Last I Watershed of .................
I Year Year Avg I Data Sites Last Yr Average
......a..............................................................a..I.........................................................
GROUNDHOG 21.7 10.4 5.9 14.2 I ANIMAS RIVER BASIN 9 173 91
JACKSON GULCH 10.0 6.3 5.1 7.4 I DOLORES RIVER BASIN 6 166 68
LEMON 40.0 17.0 9.0 23.4 I SAN MIGUEL RIVER BASIN 5 145 72
MCPHEE 381.2 228.7 193.7 304.6 I SAN JUAN RIVER BASIN 4 154 91
NARRAGl1INNEP 19.0 19.0 17.1 17.1 I TOTAL SAN MIGtlEL, DOLORES 23 165 84
VALLECITO 126.0 88.6 54.4 70.3 I SAN JUAN RIVER BASINS
...........................................................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 maybe affected by upstream water management.