WSP06278

• File Number: 8040.970
• Description: Drought Preparedness
• State: CO
• Basin: Statewide
• Date: 6/1/2002
• Author: USDA
• Title: Colorado Basin Outlook Report
• Water Supply Pro - Doc Type: Report/Study

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YAMPA. WH;ITE, AND NORTH PLATTE RIVER BASINS
Streamflow Forecasts - June 1, 2002

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I <<----..- Drier ---..-- Future Conditions Wetter __a==:>:>
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Forecast Point Forecast I ........_....._....__..__.... Chance Of EXceeding * ..........-.----.-.........--=..
Period I 90' 70% 50' (Most Probable) 30% 10% 30-Yr Avg.
. . I (1000AF) (lOOOAP) I (+OOOAF) (t AVG.) I (1000AP) (lOOOAF) J (1000AF)
.....__.._____________..__.__...........___._____.........___..__..------..--~-~--I=--a-===~~--~--~==-===..J--======-=-=---=-~-----===-..-===--.~-
North Platte River nr Northgate JUN-SEP 27 31 I 34 21! 47 67 159
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Laramie River nr Woods JUN':'SEP 8.5 10.9 I 12.6 14! 24 42 89
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Yampa R abv Stagecoach Res APR-JUL 8.1 10.4 I 12.0 41 I 16.7 24 29
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'lampa River at Steamboat springs APR-JUL 107 115 I 120 43 I 135 157 280
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Elk River nr Milner APR-JUL 98 119 I 134 41 J 150 176 325
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Elkhead Creek nr Elkhead APR~JUL 8.0 9.9 I 11.5 30 I 13.3 16.5 39
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ELKHEAD CREEK blw Maynard Gulch APR-JUL 14.3 17.7 I 20 34 I 27 .37 59.
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Fortification Ck nr Fortification MAR-JUN 1.38 1.81 I 2.10 28 I 3.14 4..67 7.50
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Yampa River nr Maybell APR-JUL 273 304 1 325 33 I 389 484 990
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Little Snake River 'nr slater APR-JUL 30 .44 I 55 35 I 67 87 159
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LITTLE SNAKE R nr Dixon APR-JUL 70 91 J 105 32 I 147 209 330
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LITTLE SNAKE R nr Lily APR-JUI" 74 95 I 110 30 I 154 219 365
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White River nr Meeker APR'-JUL 83 98 f 110 38 I 124 147 290
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YAMPA, WHITE, AND NORTH PLATTE RIVER BASINS
Reservoir Storage (lOOQ AF) - End .of May

YAMPA, WHITE, AND NORTH P~TTE RIvER BASINS
Watershed Snowpack Analysis. - June 1, 2.002

Reservoir

Usable 1
capacityl
I

*** Usable Storage
This Last
Year Year

Watershed

Number
of
Data Sites

This Xear as " of

Last Yr

Average

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STAGECOACH 33.3 28,0 32.0 29.9 LARAMIE RIVER BASIN 2 0 0
YAMCOLO '.1 6.. ..5 7.7 NORTH PLATTE RIVER BASIN 3 54 21
TOTAL NORTH PLATTE BASIN 5 .7 15
ELK RIVER BASIN 2 0 0
YAMPA RIVER BASIN , .2 10
WHITE RIVER BASIN . 0 0
TOTAL YAMPA AND WHITE .IV 12 2. 7
LITTLE SNAKE RIVER BASIN 6 50 "

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* 90%, 70t, 30t, and 10% chances of exceeding are the probabilities that the actual vol~me will exceed .the volumes in the table.

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The average is computed for the 1971-2000 base period.

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(l) The values listed under the 10\ and 90% Chance of Exceeding are actually 5% and 95%- e.xceedance levels.
(2) The value is natural volume ~ actual volume may be affected by-upstream water management.

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