WMOD00374

• Contract/Permit #: 03-FC-81-0925
• Title: Numerical Simulations of Snowpack Augmentation for Drought Mitigation Studies in the Colorado Rocky Mountains - Final Report
• Date: 9/1/2005
• State: CO
• Weather Modification - Doc Type: Report

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Table 2.1. Operational Cloud Seeding Summary for DW Program

DW & Vail/DW Operational Seeding Summary for 2003-2004 Season
Note: The Vail/OW data are for Vail seeding generator sites used for the OW Program.
Operational Seeding Summary Parts Vail/OW OW V/OW+OW AGI
Event From To of Seeding Seeding Seeding Output Grams
No. Date Time Date Time Days Hours Hours Hours (grams) per Hr.
1 11/2/03 17:30 11/4/03 12:00 3 41.00 519.75 560.75 8,316.00 14.83
2 11/5/038:30 11/6/0316:30 2 56.75 380.00 436.75 5,060.00 11.59
3 11/7/03 8:30 11/8/03 18:00 2 41.75 105.75 147.50 846.00 5.74
4 11/10/03 7:30 11/12/039:00 3 122.75 742.00 864.75 7,010.50 8.11
5 11/13/037:00 11/15/039:00 3 101.50 679.75 781.25 8,156.00 10.44
6 11/16/0321 :30 11/18/03 11 :00 3 79.50 387.00 466.50 3,860.50 8.28
7 11/22/038:00 11/23/0312:00 2 24.00 232.75 256.75 2,315.50 9.02
8 11/25/03 10:00 11/27/0313:00 3 88.75 619.50 708.25 4,730.50 6.68
9 12/7/038:30 12/9/03 16:00 3 78.25 686.25 764.50 6,837.00 8.94
10 12/10/0323:00 12/12/0322:00 3 90.50 448.50 539.00 2,766.00 5.13
11 12/13/03 9:30 12/15/03 23:00 3 69.25 650.75 720.00 5,180.25 7.19
12 12/21/038:00 12/22/0318:30 2 63.50 498.00 561.50 4,205.50 7.49
13 12/25/03 23:00 12/28/03 10:00 4 58.75 615.25 674.00 4,620.50 6.86
14 12/29/03 21 :30 12/31/03 11 :30 3 86.50 321.00 407.50 2,185.50 5.36
15 1/1/0421 :30 1/4/049:30 4 72.00 869.00 941.00 7,411.00 7.88
16 1/16/0410:30 1/17/049:00 2 0.00 498.75 498.75 3,559.00 7.14
17 1/19/0421:30 1/21/049:00 3 0.00 588.75 588.75 4,772.00 8.11
18 1/25/047:00 1/25/0423:00 1 24.25 334.25 358.50 2,588.00 7.22
19 1/28/047:45 1/29/0423:00 2 51.00 417.00 468.00 3,410.00 7.29
20 1/30/04 20:30 2/1/04 14:00 3 43.50 849.75 893.25 7,896.00 8.84
21 2/3/04 10:00 2/6/04 10:00 4 22.00 1,167.50 1,189.50 8,887.00 7.47
22 2/7/0421 :00 2/9/04 23:00 3 28.50 659.00 687.50 5,606.50 8.15
23 2/11/048:00 2/11/04 23:00 1 0.00 194.00 194.00 1,181.25 6.09
24 2/19/04 11 :30 2/20/04 8:30 2 0.00 206.50 206.50 1,968.00 9.53
25 2/21/0412:00 2/22/04 22:30 2 0.00 305.75 305.75 3,999.00 13.08
26 2/23/04 20:00 2/24/04 22:00 2 0.00 231.75 231.75 3,396.00 14.65
27 2/27/04 18:00 2/29/0423:30 3 0.00 190.25 190.25 2,838.50 14.92
28 3/4/04 17:30 3/5/04 9:00 2 0.00 72.00 72.00 566.00 7.86
29 3/14/0421:00 3/15/04 9:00 2 0.00 53.50 53.50 642.00 12.00
Totals 75 1,244.00 13,524.00 14,768.00 124,810.00 8.45

Water Year 2004 (October 1,2003 - September 30,2004) over the
central Colorado Rocky Mountains started off significantly below the 1971-2000
average; the October 2003 precipitation was only around 40% of average. The
cloud-seeding activities for the DW Program began on November 2, 2003. There
were good opportunities for cloud-seeding activities during November, which was
the only month during the DW Program's operational period when the target area
precipitation was greater than the 1971-2000 average. December 2003 and
early January 2004 had about average precipitation over the target area; this was
followed by a 2-week dry spell in mid-January. February 2004 had good c1oud-

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