WSP02689

• File Number: 8040.970
• Description: Basin Outlook Reports
• State: CO
• Date: 1/1/1999
• Author: USDOA
• Title: Colorado Basin Outlook Report
• Water Supply Pro - Doc Type: Publication

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YAMPA, WHITE, AND NORTH PLATTE RIVER BASINS
Streamflow Forecasts - March 1, 1999

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<<=====. Dr;er ====c= Future Condit;ons =====:= Vetter =====>>

Forecast Point Foreeaat ...======e=_======== Chance Of Exceedi ng * c=====:=:=====c=======
Period 90X 70X 50X (Nost Probsblel 3DX lOX 30-Tr Avg.
( lDOOAFI (IDOOAFI (1000AFI (X AVG.1 (1000AFI (IDOOAFl (1000Af)
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North Platte River nr Northgate APR'SEP 166 237 286 106 335 406 271
l8remie River nr Woods APR'SEP n 111 138 102 165 204 135
Tampa R abv Stagecoach Res APR'JUL 18,4 25 29 85 33 40 34
YIIIq)8 River at Ste.moat Springs APR-JUL 196 246 280 103 314 364 273
Elk River nr Milner APR-JUL 203 261 3D5 102 352 427 300
Elkhesd Creek nr Elkhesd APR.JUL 18.2 27 36 92 47 71 39
ELKHEAD CREEK blw Msynsrd Gulch APR-JUL 31 48 60 102 n 89 59
Fort;flcat;on Ck nr Fortlficat;on MAR-JUN 3.2D 5.94 7.80 92 9,66 12,40 B,50
YIIIpB River nr Maybell APR-JUL 663 841 970 102 1099 1278 947
lHtle Snake River or Slater APR,JUL 98 127 150 97 174 214 155
LITTLE SHAKE R nr Dixon APR-JUL 203 270 315 96 360 427 329
LITTLE SNAKE R nr Lily APR.JUL 229 298 345 96 392 461 358
Uhite River nr Meeker APR.JUL 167 210 245 88 286 360 279

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YAMPA, WHITE, AND NORTH PLATTE RIVER BASINS
Reservoir Storsge (1000 AFI ' End of February

YAMPA, WHITE, AND NORTH PLATTE RIVER 8ASINS
Yatershed Snowpack Analysis - March 1, 1999

Reservoi r

u.oble I
Capacity

*** Usable Storage ***
Thh last
Year Year Avg

Vetershed

N...,.,r
of
Data Sites

This Year as % of

-----------------
-----------------

last Yr Average

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STAGECOACH

33.3
9.1

28.2
'7.6

25,6
7.6

25.8
6.1

LARAMIE RIVER BASIN

2

107

YAMCOLO

NORTH PLATTE RIVER BASIN

5

128
106
118
101

96

ELK RIVER BASIN

97

YAMPA RIVER BASIN 10

93

WHITE RIVER BASIN 5

94

90

LITTLE SNAKE RIVER BASIN 7

104

97

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.90%, 70%, 30%, and 10% chances of exceed;ng are the probabilities that the actual volume will exceed the volumes in the table.

The average Is corrpJtecl for the 1961-1990 base period.

(1) The values listed U'lder the 10% .nd 90% Chance of Exceeding are actually 5% and 951 exceedance levels.
(2) . The value ;s natural volume - actual volume may be affeeted by upstream water management.