WSP03366

• File Number: 8442.400
• Description: Drought Preparedness
• State: CO
• Basin: Statewide
• Date: 2/1/2001
• Author: Various
• Title: Water Supply and Utilization Report
• Water Supply Pro - Doc Type: Report/Study

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WESTERN DIVIS.ION SYSTEM
RESOURCES DIVISION
LOVELAND, COLORADO

JULY 1, 2001
WATER SUPPLY AND UTILIZATION REPORT
WESTERN DIVISION SYSTEM
PICK-SLOAN MISSOURI BASIN PROGRAM

PRECIPITATION WELL BELOW AVERAGE
TEMPERATURES AVERAGE TO ABOVE AVERAGE

Precipitation was well below average over the ColoradO-Big Thompson project
(Project) during June. The poudre watershed was the lowest at 20 percent of
average. The Green Mountain watershed was the highest at 71 percent of
average.

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Temperatures over the Project were average to above average for June. One new
record was set in Fort Collins: June 30 had a high temperature' of 970F which
broke the old record of 960F set back in 1953.

PRECIPITATION

June Precipitation October June Precipitation
2001 Avg],/ . WY2001 Avgy
Watershed (Inches) . (Inches) % of Avg (InChes) (Inches) % of Avg
Gr..en Mtn. .95E 1. 33 71E 10.26E 12.33 83E
Willow Crk. .82 1.46 56 7,69 12.25 63
L. Granby .82 1.46 56 7.69 12.25 63
L. Estes .48 1. 86 26 9.18 11. 82 78 .
St. Vrain .48 1. 86 26 9.18 11. 82 78
Poudre .37 1. 84 20 8.06 10.01 81

1/ 30 year average, 1966-1995
E estimated

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INFLOWS BELOW AVERAGE

Inflows were below average over the Project during June. The inflow to' willow
Creek Reservoir was the lowest at 32'percent of average. The .inflow to Green
Mountain was the highest at 71 percent of average. Water year to date
(October-June) inflows have been 86 percent of average.

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RESERVOIR. INFLOW

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June Inflow October-June Inflow
Reservoir 2001 Avg y WY 2001 Avg 1.1
. (KAF) (KAF) % of 'Avg (KAF) (KAF) % of Avg
Green Mtn.* 86.0 121. 3 71 240.2 253.8 95
Willow Crk. 6.2 19.5 32 29.6 50.4 59
L. Granby 50.8 96 .2 53 144.6 183.2 79
L. Estes 2/ 19.3 32.7 59 52.2 57.1 91

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*Total runoff of the watershed above Green Mounta~n does not ~nclude
depletions by Denver and Colorado Springs.
1/ 30 year av..rag.., 1966-1995
I/ Lak.. Est..s Comput"d Inflow

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