WSP08119

• File Number: 8200.700
• Description: Colorado River Basin - General Publications
• State: CO
• Basin: Colorado Mainstem
• Water Division: 5
• Date: 2/1/1993
• Author: DOI-BOR
• Title: Validation of Precipitation Management by Seeding Winter Orographic Clouds in the Colorado River Basin - BOR R-93-03 - Draft
• Water Supply Pro - Doc Type: Report/Study

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TABLES

Table

4.1 Instrumentation needed for direct detection experiments . . . . _ _ .
9.1 CREST program costs in thousands of 1993 dollars with no escalation
9.2 CREST program labor in FTE's (full-time equivalents) . . . . . . . .

FIGURES

Figure

1 Conceptual model of orographic cloud With SLW zone and AgI seeding plume
2 Grand Mesa experimental area and surrounding terrain . . _ _ . . _ _ . . . .
3 Wasatch Plateau experimental area and surrounding terrain . . . . . . . . _ _ .
4 Map and cross-sectional view of composite terrain for proposed experimental areas
showing approximate instrument locations _ . . . . . . . . . . . . _ . . . . . .
5 Reproduction of figure 2 from Super and Heimbach (988) showing north-south
mean distributions of IPC and SLW content, with the origin 17 km east of the
seeding site, for indicated numbers of passes and altitudes on January 15, 1985
6 The CREST program timeline . _ . . . . . . . _ . . _ . . . . . _ . . . _ . . . _ .

APPENDIXES

Appendix

A Colorado River Basin experimental site selection .
1. Overview of experimental area characteristics _
2. Site selection factors .
2.1 High terrain . . . . _ . . . _ . . . .
2.2 Aircraft sampling . . . . . . . . _ .
2.3 Surface instrumentation and access
2.4 Seeding agents. . . . . . . . _ . .. .. . .
2.5 Time and distance for ice particle growth and fallout
2_6 Precipitation measurements ..... _ . . . . .
3. The ideal experimental barrier . . _ . _ _ . . . . . _ . .
4. Procedures for selecting the best experimental sites. . . . .
4_1 Exclusion of barriers that are too small, too low, or have wilderness areas
4.2 Rating factors . . . . . . . . . . . . . . . .
4_2.1 Practical low-level aircraft sampling.
4.2.2 Airspace conflicts. .
4_2.3 Winter road access
4.2.4 Snowmobile access
4.2.5 Conifer forest cover
4_2_6 Along-the-wind extent
4.2.7 Proximity to adequate airport
4.2.8 Societal opposition ......
4.2.9 Shadowing by upwind mountains
4_2.10 Proximity to a town _ .
4.2.11 Major axis . . _ _ . . .
4.2_12 Wilderness area effects
4.2_13 Avalanche danger . _ .

5. Selection of best experimental areas
5.1 White River Plateau. .
5_2 Grand Mesa . . . . . .
5.3 Uncompahgre Plateau _
5.4 Boulder Mountain .
5.5 Wasatch Plateau. .
5.6 Chuska Mountains

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