WSP05271

• File Number: 8040.970
• Description: Basin Outlook Reports
• State: CO
• Date: 1/1/2001
• Author: USDOA
• Title: Colorado Basin Outlook Report
• Water Supply Pro - Doc Type: Publication

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YAMPA, WHITE, AND NORTH PLATTB RIVER BASINS
Streamflow Forecasts - May 1, 2001

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Forecast Point Forecast 1 a.aaa..=....c=c=a... Chance Of Exceeding .~~~.a._a__a_....===~.
Period I '" 70\ 5" (Most Probable) I 30\ '" 30-Yr Avg.
I (1000AP) (1000AP) I (lOOOj\p) ('I AVG.) I (IOOOAP) (IOOOj\P) (lOOOAP)
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North Platte River nr Northgate Ml\Y-SEP 61 " 1 122 54 147 183 228
I
Laramie River nr Woods M1t,Y-SEP 66 " 111 87 129 156 127
Yampa R abv Stagecoach Ra. APR-JUL 16.5 23 28 82 33 40 "
<ampa River at Steamboat Springs APR-JUL 163 185 200 73 215 237 273
Elk River nr Milner APR-JUL 136 170 195 65 222 265 300
Xlkhead Creek nr B1khead APR-JUL 13.8 17.2 20 51 23 29 "
ELKHEAD CREEK blw Maynard Gulch APR-JUL 17.3 27 34 58 41 51 "
Fortification Ck nr Fortification Ml\R-JUN :iI.52 3.40 4.00 47 5.28 7.15 8.50
YlUIlpa River nr Maybe1l APR-JUL 475 '" 670 71 ,., 865 947
Little Snake River nr Slater APR-Jt]L 65 85 100 65 116 142 155
LITTLB SNAKE R nr Dixon j\PR-JUL 104 167 210 64 253 316 329
LITTLE SNAKE R nr Lily APR-Jl,JL 11' 175 22. 62 265 330 358
White River nr Meeker APR.Jl,JL 143 '" 190 68 213 253 27'

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YAMPA, WHITE, AND NORTH PLATTE RIVER BASINS
Reservoir Storage (1000 AP) - End of April

YAMPj\, WHITE, AND NORTH PLATTE RIVER BASINS
Watershed Snowpack Analysis . May 1, 2001

Usable I ~** Usable Storage Number This Year a8 '" of
Reservoir Capacityl This Last Watershed of .....~~a....~~~"'~.
I Year Year Avg I Data Sites Last Yr Average
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STAGECOACH 33.3 29.6 26.8 28.8 I LARAMIE RIVER BASIN 4 88 72
I
YAMCOLO 9.1 7.5 8.8 6.9 I NORTH PLATTE RIVER BASIN 5 77 73
1
I TOTAL NORTH PLATTE BASIN 8 80 74
I
I ELK RIVER B~SIN :z 102 59
1
I YAMPA RIVER BASIN 11 84 65
I
I WHITE RIVER MSIN 4 114 89
1
I TOTAL YAMPA AND WHITE RIV 14 90 69
t
I LITTLE SNAKE RIVER BASIN 8 104 71
1

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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 1961-1990 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.