WSP12943

• File Number: 8040.800
• Description: Water Resources for Colorado
• State: CO
• Date: 4/1/2003
• Author: US Dept of Agriculture - Natural Resoruces Conservation Service
• Title: Colorado Basin Outlook Report April 1, 2003
• Water Supply Pro - Doc Type: Data

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SAN MIGUEL, DOLORES, ANIMAS, AND SAN JUAN RIVER BASINS
Streamflow Forecasts - April 1, 2003

Forecast Point

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I <<_.g=== Drier ==.==~ Future Conditions ==~===. Wetter c====>>
I
Forecast I a===_==_============ Chance Of Exceeding * ======================
Period I 90% 70% 50% (Most Probable) 30% 10% 30-Yr Avg.
I (1000AF) (1000AF) I (1000"F) (t AVG.) I (1000AF) (1000AF) I (1000AF)
---===_.=-===-==========-================================-===~=m====I==================_=_a=I==.====_==D======__==_=========_==_==
Dolores River at Dolores APR-JUL 82 140 / 180 68' I 220 280 265
McPhee Reservoir inflow APR-JUL 101 166 I 210 66" / 255 320 320
San Miguel River nr Placerville APR-JUL 45 75 / 95 72~ I 115 145 132
Gurley Reservoir Inlet APR-JUL 7.2 9.7 I 11. 5 70" I 13.3 15.8 16.5
APRIL/ 1.50 90 I 1.66
MAY / 6.30 71 I 8.83
JUNE I 3.10 66 4.67
JULY / 0.60 46 1.32
APR-JUL 1.64 2.20 I 2.50 71- 2.80 3.40 3.53
APRIL I 0.42 91 0.46
MAY I 1.22 74 1.64
JUNE I 0.68 65 1.04
JULY I 0.18 47 0.38
APR-JUL 1.00 1.60 I 2.00 70- 2.40 3.00 2.86
APRIL I 0.36 90 0.40
MAY I 0 . 95 72 1. 32
JUNE I 0.57 66 0.87
JULY I 0.12 44 0.27
APR-JUL 17.0 27 I 34 64 · 41 51 53
APR-JUL 19 ~ 0 32 I 41 59 . 50 63 69
APR-JUL 135 194 I 240 59' 291 375 405
APR-JUL 49 85 I 110 48 . 135 171 230
APR-JUL 55 91 I 115 56. 139 175 205
APR-JUL 125 290 I 400 50 ~ 510 675 800
APR-JUL 154 220 I 265 60. 310 375 440
APR-JUL 11. 0 23 I 31 53' 39 51 58
APR-JUL 9.8 13.8 I 16.5 66.... 18.8 23 25
APR-JUL 7.4 18.0 I 25 63 32 43 40
APRIL I 5.00 86 5.80
MAY I 10.4 65 15.9
JUNE I 7.5 55 13.7
JULY I 2.10 46 4.60

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
Vailecito Reservoir Inflow
Navajo ReServoir Inflow
Animas River at Durango
Lemon Reservoir Inflow
La'Plata River at Hesperus
Mancos River nr Mancos

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SAN MIGUEL, DOLORES, ANIMAS, AND SAN JUAN RIVER BASINS I SAN MIGUEL, DOLORES, ANIMAS, AND SAN JUAN RIVER BASINS
Reservo~r Storage (1000 AF) - End of March / Watershed Snowpack Analysis _ April 1, 2003
......----.-.-....--..=.-.----=....-..----.-.----.------=--.===-=-._=---==--=====---------====._._==--_...=__=__a_.=._....==._.___
Usable I *** Usable Storage *** I Number This Year as % of
Reservoir Capacity/ This Last I Watershed of ======_=====___==
I Year Year Avg I Data Sites Last Yr Average
...._.==--=======~====-================-==-=.===.=====================-=, ==================-==========._=======--==.===--~==.==.==
GROUNDHOG 21.7 3.8 11.1 12.2 I ANIMAS RIVER BASIN 9 199 70
JACKSON GULCH 10.0 4.5 2.3 5.1 I DOLORES RIVER BASIN 7 254 81
LEMON 40.0 6.3 13.0 21. 2 I SAN MIGUEL RIVER BASIN 5 186 85
MCPHEE 381.2 168.0 206.7 273.6 I SAN JUAN RIVER BASIN 3 267 73
NARRAGUINNEP 19.0 7.9 17.6 15.5 I TOTAL SAN MIGUEL, DOLORES 23 219 75
VALLECITO 126.0 41.8 57.2 62.0 I AN JUAN RIVER BASINS
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* 90t, 70%, 30%, and 10% chances of exceeding are the probabilities that the actual volume will exceed the volume$ 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.