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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SOUTH PLATTE RIVER BASIN
Streamflow Forecasts - February 1, 2004

<<====== Drier ===:Zs_ Future Conditions Wetter :l:S:Z_=>>
Forecast Point Forecast ==================== Chance Of Exceeding * ..c............__:..__
Period 90\ 70\ 50\ (Most Probable) 30\ 10\ 30-Yr Avg.
(lOOOAF) (lOOOAF) (lOOOAF) (\ AVG.) (lOOOAF) (lOOOAF) (lOOOAF)
_.=._-==============================================-=============== =================--===- ======......==~====.==....=._=.c=...=
Antero Reservoir inflow APR-JUL 1.7 2.7 3.7 21 5.1 8.2 17.5
Spinney Mountain Reservoir inflow APR-JUL 9.6 13.6 17.2 30 22 31 57
Elevenmile Canyon Reservoir inflow APR-JUL 2.4 8.1 15.2 26 22 33 59
Cheesman Lake inflow APR-JUL 23 31 37 33 45 59 114
South Platte River at South Platte APR-SEP 23 83 123 48 163 225 254
Bear Creek abv Evergreen APR-SEP 6.5 10.5 14.6 58 20 33 25
Bear Creek at Morrison APR-SEP 6.4 11.2 16.5 53 24 43 31
. Clear Creek at Golden APR-SEP 62 83 98 73 113 134 134
St. Vrain Creek at Lyons APR-SEP 37 52 62 74 72 87 84
Boulder Creek nr Orodell APR-SEP 35 43 48 91 53 61 53
South Boulder nr Eldorado Spgs APR-SEP 24 30 34 74 38 44 46
. Big Thompson River at mouth nr Drake APR-SEP 68 86 98 84 110 128 117
CACHE LaPOUDRE at Canyon Mouth APR-SEP 134 185 220 80 255 305 275

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_._..=.===============================_z=_~================================_=s========_===_.=_==____...___..=.=s__......===_=:....
*** Usable Storage *** I
This Last I
I Year Year Avg I Data Sites Last Yr Average
.........-..-.-==.....-==---=-=......................=.......=.==....==.1.=......._.........._...._=.........-....................
ANTERO 20.0 0.0 0.0 16.4 I BIG THOMPSON BASIN 7 114 74
BARR LAKE 32.0 21.1 15.0 24.0 I BOULDER CREEK BASIN 5 100 61
BLACK HOLLOW 8.0 2.8 2.1 3.9 I CACHE LA POUDRE BASIN 8 108 71
BOYD LAKE 49.0 30.8 6.0 32.1 I CLEAR CREEK BASIN 4 101 78
CACHE LA POUDRE 10.0 1. 4 2.2 7.2 I SAINT VRAIN BASIN 4 94 55
CARTER 108.9 34.7 94.1 84.6 I UPPER SOUTH PLATTE BASIN 15 92 53
CHlIMBERS LAKE 9.0 6.1 2.6 3.0 I TOTAL SOUTH PLATTE BASIN 43 102 65
CHEESMAN 79.0 59.3 48.2 59.7 I
COBB LAKE 34.0 5.2 2.5 13.9 I
ELEVEN MILE 97.8 71.0 44.5 95.9 I
EMPIRE 38.0 20.8 15.2 22.8
FOSSIL CREEK 12.0 4.6 5.0 6.8
GROSS 41.8 27.4 17.8 26.0
HALLIGAN 6.4 3.8 2.5 4.3
HORSECREEK 16.0 10.1 1.1 11.6
HORSETOOTH 149.7 111.6 15.5 99.0
JACKSON 35.0 23.8 24.1 26.1
JULESBURG 28.0 15.2 15.8 18.8
LAKE LOVELAND 14.0 10.6 8.0 8.7
LONE TREE 9.0 6.9 5.9 6.4
MARIANO 6.0 0.9 0.5 4.2
MARSHALL 10.0 6.0 3.3 5.1
MARSTON 13.0 15.4 4.8 12.8
MILTON 24.0 8.2 3.0 15.5
POINT OF ROCKS 70.0 34.3 18.9 57.0
PREWITT 33.0 6.4 2.3 19.3
RIVERSIDE 63.1 34.6 18.0 41.7
SPINNEY MOUNTAIN 48.7 24.1 14.5 33.3
STANDLEY 42.0 38.8 19.8 33.1
TERRY LAKE 8.0 5.8 1.4 5.3
UNION 13.0 10.1 5.6 10.6
WINDSOR 19.0 8.8 0.4 10.8

SOUTH PLATTE RIVER BASIN
Reservoir Storage (1000 AF) - End of January

Reservoir

Usable I
Capacity I

SOUTH PLATTE RIVER BASIN
Watershed Snowpack Analysis - February 1, 2004

Watershed

Number
of

This Year as \ of

* 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.