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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YAMPA, WHITE, AND NORTH PLATTE RIVER BASINS
Streamflow Forecasts - February 1, 2004

._=_._==c===========================================================c===.=========........=~.=_.=.=....==..._..=====.._.__....====

<<==c=== Drier ====== Future Conditions Wetter ..-..>>
Forecast Point Forecast ===-================ Chance Of Exceeding * ._za._..._.=====._..__
Period 90% 70% 50% (Most Probable) 30% 10% 30-Yr Avg.
(lOOOAF) (lOOOAF) (lOOOAF) (% AVG.) (lOOOAF) (lOOOAF) (lOOOAF)
=~~a..==============================================z=============== ================z___=== ===:==-.--======.-.----..=--=:=====--
NORTH PLATTE RIVER nr Northgate AFR-SEP 118 185 230 85 275 340 270
LARAMIE RIVER nr Woods APR-SEP 36 75 102 76 129 168 135
Yampa R abv Stagecoach Res APR-JUL 11. 6 19.0 24 83 29 36 29
Yampa River at Steamboat Springs APR-JUL 139 185 220 79 255 300 280
Elk River nr Milner APR-JUL 182 238 280 86 326 399 325
Elkhead Creek nr Elkhead APR-JUL 16.4 24 30 77 38 55 39
ELKHEAD CREEK blw Maynard Gulch AFR-JUL 21 38 50 85 62 79 59
Fortification Ck nr Fortification MAR-JUN 2.26 4.70 6.40 85 8.10 10.50 7.50
Yampa River nr Maybell APR-JUL 470 665 800 81 935 1130 990
Little Snake River nr Slater AFR-JUL 110 136 156 98 177 210 159
LITTLE SNAKE R nr Dixon AFR-JUL 204 275 325 99 375 445 330
LITTLB SNAKB R nr Lily AFR-JUL 230 305 355 97 405 480 365
White River nr Meeker AFR-JUL 165 206 240 83 279 349 290

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*** I
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Avg I

YAMPA, WHITE, AND NORTH PLATTE RIVER BASINS
Reservoir Storage (1000 AF) - Bnd of January

YAMPA, WHITE, AND NORTH PLATTE RIVER BASINS
Watershed Snowpack Analysis - February 1, 2004

Reservoir

Usable I
Capacity I
I

*** Usable Storage
This Last
Year Year

Watershed

Number
of
Data Sites

This Year as % of

Last Yr

Average

STAGECOACH 33.3 29.0 25.4 25.1 LARAMIE RIVER BASIN 3 127 77
YAMCOLO 9.1 5.5 2.5 6.2 NORTH PLATTE RIVER BASIN 11 108 82
TOTAL NORTH PLATTE BASIN 13 111 82
ELK RIVER BASIN 2 127 93
YAMPA RIVER BASIN 12 112 89
WHITE RIVER BASIN 6 135 97
TOTAL YAMPA AND WHITE RIV 17 117 90
LITTLE SNAKE RIVER BASIN 8 132 100

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* 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.