WMOD00285 ‎(2)‎

• Title: Feasibility Study of Wintertime Cloud Seeding to Augment Arizona Water Supplies
• Date: 1/1/1987
• State: AZ
• Weather Modification - Doc Type: Report

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CONTENTS

E xecut i ve Summa ry

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1. Introduction

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2. Literature Search on Weather Modification

3. Weather Modification Techniques. . . . . . .

3.1 Background .....................

3.2 Winter cloud types with modification potential ...
3.3 Treatment methodology . . . . . . . . . . . . . . . .

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4. Applicability of Cloud Seeding to Arizona Mountains . . .
4.1 Winter storm patterns. . . . . . . . . . . . . . . · . .
4.2 Upper air data .................
4.3 Precipitation event analyses .... . . . . . . ·
4.4 Discussion of results . . . . . . . . . . . . . . . . . .

5.

Environmental Considerations ................

5.1 Introduction ......................
5.2 Potential environmental effects. . . . . . . . . . . . .
5.2.1 Effects related to seeding agent and supporting

activities ...................
5.2.2 Effects related to increase in precipitation ...
5.2.2a Wildlife. . . . . . . . . . . . . . . .
5.2.2b Erosion ......... . . .
5.2.2c Recreation. . . . . . . . . . . . .
5.2.2d Snow removal from highways . . . . . . . . .
5.2.2e Cultural resources . . . . . . . . . . .
5.3 Additional considerations. . . . . . . . . . .

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6. Legal and Socioeconomic Impacts of Weather Modification. . .

6.1 Introduction ......................
6.2 Permission to modify the weather in Arizona . .

6.3 Question of ownership . . . . . . . . . . . . . . · .
6.4 Questions of liability .................

6.5 Socioeconomic effects .................
6.6 Burden of proof. . . . . . . . . . . . . . · .

6 .7 Summa r,Y . . . . . . . . . . . . . . . . . . . . · . ·

7. Estimation of Streamflow Yield from Cloud Seeding. . . .
7.1 Introduction. . . . . . . . . . . . . . . . . . · . .
7.2 Precipitation. . . . . . . . . . . . . . . . . . · . . .
7.3 Runoff .........................
7.3.1 Background ....................
7.3.2 Increases in runoff on the San Francisco River ..
7.4 Development of three enhancement scenarios .....
7.5 Central Arizona Project Simulation Model .. . . . .
7.5.1 Model primary features .. . . . . . . . . .
7.5.2 General assumptions. . . . . . . . . . . . . .

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