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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YAMPA, WHITE, AND NORTH PLATTE RIVER BASINS
Streamflow Forecasts - April 1, 2003

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Wetter =====>> I
I
=~=.========.==~~=== Chance Of Exceeding * ==~========Z~========s I
90t 70t sot (Most Probable) 30t lOt I 30-Yr Avg.
I (lOOOAF) (lOOOAF) I (lOOOAF) (t AVG.) I (lOOOAF) (lOOOAF) I (lOOOAF)
.-..==._==.=--.===~=~-==.====--=============.========c===-==z_~===..I=.===============a=_===lz=======.=~=====~=_========.==.====*=
NORTH PLATTE RIVER nr Northgate APR-SEP 102 160 I 200 74 I 240 300 270
I ,
I 100 74 I
I I
I 26 90 I
I
,
I

<<-=-=-- Drier ======

Future Conditions

Forecast Point

Forecast
Period

LARAMIE RIVER nr Woods

APR-SEP

37

74

126

163

135

Yampa R abv Stagecoach Res

APR-JUL

16.1

22

30

36

29

Yampa River at Steamboat Springs

APR-JUL

180

220

245

88

270

310

280

Elk River nr Milner APR-JUL 158 210 250 77 293 363 325
Elkhead Creek nr Elkhead APR-JUL 15.7 23 30 77 39 57 39
ELKHEAD CREEK blw Maynard Gulch APR-JUL 30 42 50 85 58 70 59
Fortification Ck nr Fortification MAR-JUN 2.20 4.70 6.40 85 8.10 10.60 7.50
Yampa River nr Maybell APR-JUL 515 700 820 83 945 1125 990
Little Snake River nr Slater APR-JUL 85 108 126 79 145 175 159
LITTLE SNAKE R nr Dixon APR-JUL 150 215 260 79 305 370 330
LITTLE SNAKE R nr Lily APR-JUI; 171 240 285 78 330 400 365
White River nr Meeker APR-JUL 127 156 180 62 207 255 290

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

YAMPA, WHITE, AND NORTH PLATTE RIVER BASINS
Watershed Snowpack Analysis - April 1, 2003

,
I
._._-.~.===-=..~.==-_._=====.=-=_..~---=====...===.-=====---===-=-==-=-=----_.-.===-_._.==-----====---_======_=_=_==__=m__=_as_.._
*** I
,
Avg I

Usable I
Capacity'
,

*** Usable Storage
This Last
Year Year

Watershed

Number
of
Data Sites

This Year as t of

Reservoir

Last Yr

Average

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STAGECOACH 33.3 26.0 26.8 24.6 LARAMIE RIVER BASIN 4 177 100
YAMCOLO 9.1 3.0 5.1 6.9 NORTH PLATTE RIVER BASIN 9 152 98
TOTAL NORTH PLATTE BASIN 12 158 98
ELK RIVER BASIN 2 121 89
YAMPA RIVER BASIN 11 137 95
WHITE RIVER BASIN 4 133 85
TOTAL YAMPA AND WHITE RIV 14 135 91
LITTLE SNAKE RIVER BASIN 8 133 96

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* 90t,70t, 30t,. and lOt 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 u~der the lOt and 90t Chance of Exceeding are actually 5t and 95t exceedance levels.
(2) - The value is natural volume - actual volume may be affected by upstream water management.