WSP04019

• File Number: 8282.982
• Description: Colorado River Basin Pilot Project
• Basin: Colorado Mainstem
• Date: 1/1/1975
• Author: EG&G
• Title: Colorado River Basin Pilot Project Final Comprehensive Operations Report 1970 - 75 Season
• Water Supply Pro - Doc Type: Publication

caAPT1!::R 1

CHAP'1'll:R 2

CHAPTER 3

CONTENTS

INTRODUCTION, . , . , . . . . . . . . . .
1.1 Purpose and Objectives. . . . . . . .
1. 2 Background for Project Location and
Design. . . . . . .
1. 3 Project Area . . .
1. 4 Expected Results. .

OPERATIONAL PLAN . .
2.1 Randomization Plan.
2.2 Experimental Day. .
2. 2. 1 Definition of an Experimental Day
2.2.2 Criteria for an Experimental Day
Operational Seeding Plan. . . . . . . . . .
Generator Selection Procedure. . . . . . .
2.4. 1 Mean Flow for Targeting. . . . .
2.4. 2 Offset Values for Low Level Flow
2.4.3 Depth of the Generator Network .
2.5 Suspension Criteria. . . . . . . . . . . . .

OPPORTUNITY RECOGNITION FORECASTING.
3.1 Forecast Procedures for Experimental
Day Recognition. . . . . . . . . . . . . .
3.2 Objective Prediction Techniques. . . . .
3. 2. 1 Discrimination of Precipitation,
and Non-precipitation Events. .
3.2.2 Quantitative Assessment of
Precipitation . . . . . . . . . .
3. 2, 3 Precipitation in Relation to 700
mb Wind and Terrain Slope. . .
3. 2.4 Avalanche Appraisal . . . . . .
3. 2.4. 1 Initial Data Sources .
3. 2. 4. 2 Avalanche Frequency
3. 2. 4. 3 Attendant Upper Air
Features and
Precipitation. . . . .
3. 2.4. 4 Data Stratifying
Routines. . . . . . .
3. 2.4. 5 Resulting Conditional
Probabilities of Ava-
lanche Occurrence. .
3.2.4.6 Suspension Criteria.
3.3 Opportunity Recognition Forecast
Verification. . . . . . . . . . .
3.3.1 Forecast Verification. . .

2.3
2.4

4

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