WMOD00196

• Contract/Permit #: 2003-01
• Sponsor Name: Gunnison County, City of Gunnison, Crested Butte
• Project Name: WM Evaluation Report
• Title: The Development, Conduct and Evaluation of a Cloud Seeding Program for the Gunnison River Basin, CO During the 2003-04 Season
• Date: 8/1/2004
• County: Gunnison
• State: CO
• Weather Modification - Doc Type: Reports

.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
'.
.
.
.
.
.
.
.
.
.
.
.
.

Table 2-1 Average monthly precipitation (inches)

[SITE DOCT !NOV IDEC IJAN \FEB I MAR I APR I
BUTTE (10160') 1.8 2_7 4.1 2.9 2.7 3.4 2.6
MC CLURE 3.4 2_7 3.3 3.0 2_8 3_9 2.9
PASS (9500')
NORTH LOST 3.4 3.2 4.2 3_2 3.4 4.2 4.3
TRAIL (9200')
SCHOFIELD 4.2 5.6 4.4 4.5 7.7 6.0 4_7
PASS (10,700')

Table 2-2 Average cumulative snow water content (inches at the first of each month)

II SITE DNOV IDEC IJAN IFEB I MAR IAPR I MAY I
BUTTE 1.2 3.6 6.4 9_5 12_6 15.7 7.6
MC CLURE
0.8 3.0 6.6 I1.0 14_9 18.4 14.1
PASS
NORTH LOST
1.0 4_0 7.2 10.8 15_0 18.2 13.2
TRAIL
SCHOFIELD
3_6 9.2 14.4 20.3 27.6 35.0 38.3
PASS

2.2 Storm Types

More than 30 significant storm events in Gunnison County were analyzed to

determine the weather patterns and types of storm systems likely to produce significant

snowfall during the winter season. It was found that these heavier precipitation amounts

3