WMOD00592

• Project Name: Project Skywater
• Title: Project Skywater - Final Environmental Statement - Volume I
• Date: 1/1/1977
• Weather Modification - Doc Type: Report

CONTENTS - Continued

4.3.
4.4.

Field installations and support .................
~itigation of adverse impacts of
modified precipitation ........................

Page
4-3

4-4

4.4.1. Safety criteria for cloud seeding

operations ............................... 4-4

4.4.1.1.

Colorado River Basin Pilot

Pro j ect .............................

Pyramid Lake Pilot Project ............
High Plains Cooperative Program .......
Sierra Cooperative Pilot Project ......

4.4.1.2.
4.4.1.3.
4.4.1.4.

4.4.2.

Possible adverse wide-area and long-term
environmental impacts of precipitation

mod i fica t ion .............................

Identification of problem areas ............
Mitigation of adverse impacts of cloud
seeding materials ........................

4.4.3.
4.4.4.

4-4
4-7
4-8
4-9

4-9
4-10

4-12

4.4.4.1. Silver iodide ......................... 4-12

CK~PTER 5. UNAVOIDABLE ADVERSE EFFECTS

5. Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

5.1. Impact on disbeneficiaries ...................... 5-1

5.1.1.
5.1.2.

Orographic snowpack augmentation ...........
Su~mer convective showers ..................

5-1
5-1

5.2. Effects of augmented orographic

precipi tation .................................... 5-2

5.2.1.
5.2.2.
5.2.3.

Avalanches
Geomorphic
Effects of

effects ............................

runoff ........................................

5.3.

Effects of augmented showery

precipitation .................................

Effects of seeding operations ...................

Silver iodide ...................................

Unidentified adverse effects ....................

5.4.
5.5.
5.6.

ix

5-2
5-2
5-3

5-3
5-4
5-4
5-4