WSPC03885

• File Number: 8200.700
• Description: Colorado River Basin General Publications - Augmentation-Weather Modification
• 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 - Draft
• Water Supply Pro - Doc Type: Report/Study

003175

CONTENTS

9. Program costs and schedule. .
9.1 Program budget overview.
9,2 Program schedule

10. References

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Executive Summary. . . . . . . ,

1. Introduction , . . , , . . . . .
1. 1 Need for additional water.
1.2 Cloud seecling as a water augmentation option
1.3 Program purpose and overview. . . . . . , .. .....
1.4 Reclamation authority to develop cloud seeding technology

2. Background ,."...........,.
2.1 Weather modification policy statements
2.2 Overview of past investigations. . . . .
2.3 Opportunity to advance the technology

3. General approach to the proposed program
3.1 Fundamentals of winter orographic stonus and cloud seecling
3.2 Seeding hypothesis .. . . . . . . . .
3.3 Overview of experimental approaches
3.4 Site selection process . . . . . . . . .

4. Direct detection experimental phase . . .
4.1 Seeding impacts and suspension criteria.
4.2 Scheduling during the direct detection phase
4.3 Differences between experimental areas .
4.4 Numerical modeling. . . . . . . . . . . . . .
4.5 Seeding sites and agents ......... . .
4.6 Observations of hypothesized processes . . .
4:6.1 Existence of excess SLW over the barrier
4.6.2 Reliable production of seeding agents . .
4.6.3 T&D of AgI and propane-created ice crystals
4,6.4 Seeded zone temperature ......,... .
4.6,5 Transport of seeding-created ice particles toward the target.
4.6.6 Ice particle growth environment. . . . . . . . . . .
4.6.7 Snowflake fallout trajectories . . , . . . . . . . . .
4.6.8 Seeding-induced snowfall on the target . . . . . . .
4.7 Procedures during a typical clirect detection experiment.

5. StatisticaVphysical experiment phase .... .
5.1 Overview of statistical experimental design
5.2 Role ofcovariates . . . . . . . . . . . .
5.3 AdclitionaI experimental considerations
5.4 Experimental observations
5.5 Streamflow modeling . . .

6, Transferability investigations.

7. Project organization and management

8. Environmental compliance activities

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