WSP11390

• File Number: 8040.970
• Description: Basin Outlook Reports
• State: CO
• Date: 1/1/2000
• Author: USDOA
• Title: Colorado Basin Outlook Report
• Water Supply Pro - Doc Type: Publication

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UPPER COLORADO RIVER BASIN
Streamflow Forecasts - April 1, 2000

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I <<====== Drier =~==== Future Conditions Wetter =====>>
I
Forecast POint Forecast I ==================== Chance Of Exceeding ===========~==========
Period I 90\ 70\ 50% (Most Probable) I 30% 10% I 30-Yr lwg.
I (lOOOAF) (lOOOM) I (lOOOM) (% AVG.) I (lOOOAF) (lOOOAF) I (lOOOM)
"""""""="""===="===="""=="=="==""==""==""==""====""===="======""====1"====""=========="=====1================"====================
Lak.e Granby Inflo.... APR-JUL 168 197 I 220 103) 245 288 214
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Willow Creek Reservoir Inflow APR-JUL 37 47 I 54 108 I 62 74 50
1 I
wi lliams Fork Reservoir inflow APR-JUL 69 81 I 89 101) 98 112 88
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E.F. Troublesome Creek nr Troublesorn APR-JUL 13.7 17.5 I 20 108 I 23 26 18.5
1 I
Dillon Reservoir Inflow APR-JUL 106 135 I 155 103! 175 204 151
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Green MOWltain Reservoir inflow APR-JUL 227 252 I 270 103 1 289 317 262
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Muddy Creek. b1w Wolford Mtn. Resv. APR JUL .:2 54 I 64 100! 76 98 64
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Eagle River b1w Gypsum APR JUL 207 251 I 285 92 I 324 392 310
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Colorado Riv~r nr Dotsero APR-JUL 878 1159 I 1350 99! 1541 1822 1362
1 I
Ruedi Reservoir Inflow APR-JUL 90 108 I 122 90 I 138 166 136
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Roaring Fork at Glenwood Springs APR-JUL 452 537 I 600 89! 666 769 671
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Colorado River nr Cameo APR-JUL 1466 1903 I 2200 96 I 2497 2934 2287
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UPPER COLORADO RIVER BASIN
Reservoir Storage (l000 AF) - End of March

UPPER COLORADO RIVER BASIN
Watershed Snowpack Analysis - April 1, 2000

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Usable! ... Usable Storag~ Number This Year as % of
Reservoir Capacityl This Last Watershed of ======"'=====~====
I Year Year Avg I Data SHes Last Yr Average
===="============"======"====="=====""==================================1============"============================================
DILLON 250.8 218.0 . 219.3 202.9 I' B~l)E: RIVER BASIN 8 113 100
I
LAKE GRANBY 465. 364.4 366. 226.2 I UPPER COLORADO RIVER BASI 34 126 99
1
GREEN MOUNTAIN 139.0 64.6 62.0 56.0 I HUDDY CREEK BASIN 4 141 117
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HOMESTAKE 43.0 38.7 34.4 18.8 I PLATEAU CREEK BASIN 116 87
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RUEDI 102.0 66.4 65.8 61.7 I ROARING FORl< BASIN 8 151 90
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VEGA 32.0 17.7 14.7 12.4 I WILLIAMS FORl< BASIN' 12] 9]
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WILLIAMS FORK 96.8 67.2 72.9 r.ll.O I' ""ILLOh" CRE:EK BASIN 5 139 120
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WILLOW CREEK 90 6.6 .1 6.6 I TOTAL COLORADO RIVER BASI 44 129 97
I

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. 90%. 70%, 30%, and 10% chances of exceeding are the probabilitie9 that the actual volume Will exceed the volumes in the table.

The average is computed for the 1961-1990 base period.

(1) The values listed under the 10% and 90% Chance of Exceedlng are actually 5\ and 95% exceedance levels.
(2) The value is natural volume - actual volume ~y be affected by upstream water management.