Table Of ContentHYDROLOGICAL DIMENSIONING AND OPERATION OF RESERVOIRS
Water Science and Technology Library
VOLUME 39
Editor-in-Chief
V. P. Singh, Louisiana State University, Baton Rouge, U.S.A.
Editorial Advisory Board
M. Anderson, Bristol, U.K.
L. Bengtsson, Lund, Sweden
J. F. Cruise, Huntsville, U.S.A.
U. C. Kothyari, Roorkee, India
S.E. Serrano, Lexington, U.S.A.
D. Stephenson, Johannesburg, South Africa
W.G. Strupczewski, Warsaw, Poland
HYDROLOGICAL
DIMENSIONING AND
OPERATION OF RESERVOIRS
Practical Design Concepts and Principles
by
IMREY.NAGY
Budapest Technical University & Committee for Water Resources Development,
Hungarian Academy ofS ciences, Hungary
KOFI ASANTE-DUAH
Anteon Corporation, Environment Division,
San Diego, California, U.S.A.
and
ISTVAN ZSUFFA
Department for Hydrology and Water Management,
Budapest Technical University, Hungary
Springer-Science+Business Media, B.V.
A C.I.P. Catalogue record for this book is available from the Library of Congress.
ISBN 978-90-481-5942-0 ISBN 978-94-015-9894-1 (eBook)
DOI 10.1007/978-94-015-9894-1
Cover illustration: Network flow representation of spatial and temporal configuration
for multireservoir systems
Printed on acid-free paper
All Rights Reserved
© 2002 Springer Science+Business Media Dordrecht
Originally published by Kluwer Academic Publishers in 2002.
Softcover reprint of the hardcover 1st edition 2002
No part of the material protected by this copyright notice may be reproduced or
utilized in any form or by any means, electronic or mechanical,
including photocopying, recording or by any information storage and
retrieval system, without written permission from the copyright owner.
~ To a O:::J uSo.... r UJ E~ xt~ raa o~ rdis:: n~ a~ ry tL F~ aE milies
TABLE OF CONTENTS
Preface xiii
CHAPTER 1: INTRODUCTION 1
1.1. Water Resources Management 2
1.1.1. Planning and Design of Water Resources Systems 3
1.1.2. Water Resources Systems Analysis 3
1.1.3. Why Build Dams? 4
1.2. The Need for Flow Regulation Systems 5
1.2.1. Balancing Water Supply with Water Demands 5
1.2.2. The Water Balance of Reservoirs as a Tool in Reservoir Design
and Management 8
1.2.3. Regional Imbalance Between Water Supply and Water Demand:
Transboundary River Management Issues 10
1.3. Impact of Reservoir Projects on the Temporal and
Spatial Variation of Streamflow Quantity and Quality 11
1.3.1. Environmental Impact Issues Associated with Dam
and Reservoir Projects 11
1.4. Using Storage Reservoirs in Flow Regulation
and Water Management Schemes 13
CHAPTER 2: THE HYDROLOGY OF FLOW REGULATION 15
2.1. Flow Allocations 15
2.2. Hydrological Problems Resulting from Water Deficiency 16
2.3. Hydrological Problems Caused by Water Excess 17
2.4. Types of Flow Regulation 19
2.4.1. Daily Flow Regulation 19
2.4.2. Weekly Flow Regulation 20
2.4.3. Seasonal or Annual Flow Regulation 22
2.4.4. Multiannual Flow Regulation 22
2.5. Optimizing Flow Regulation Schemes 25
2.6. General Characteristics of Flow Regulation Systems 25
vii
viii
CHAPTER 3: PLANNING FOR DAMS AND RESERVOIRS: HYDROLOGIC
DESIGN ELEMENTS AND OPERATIONAL CHARACTERISTICS OF
STORAGE RESERVOIRS 29
3.1. The Reservoir Design Problem 30
3.1.1. Reservoir-Site Selection 31
3.1.2. The Case for Multipurpose Reservoirs 32
3.2. Multireservoir System .Layout and Analyses 33
3.3. Hydrological Basis for the Determination
of Reservoir Storage Capacity 35
3.3.1. A Model of Capacity Allocation and Survey of Water Demands
in Multipurpose Reservoirs 37
3.3.2. Estimating the Active Storage Necessary for Flow Regulation
and Water Supply 40
3.3.3. Hydroelectric Power Potential of Storage Reservoirs 41
3.3.4. Storage-Space for Flood Mitigation:
The Reservoir Flood Storage Capacity Design 41
3.3.5. Siltation of Reservoirs and Sediment Reserve Storage 44
3.3.6. Adjustment of Storage Estimates for Net Evaporation Losses 48
3.3.7. Other Secondary Factors Affecting Reservoir Size-Selection 51
3.4. Hydrologic Data Requirements and Analyses 53
3.4.1. Selecting a Distribution for Use in the Hydrologic Design Process 54
3.4.2. Bayesian Techniques for Parameter Estimation with Limited Data 55
3.4.3. Design of Reservoir Storage for Stochastically Varying Water Demand 57
3.5. Deterministic vs. Stochastic Methods in the Reservoir Design Problem 57
3.5.1. Deterministic Methods and Models in Reservoir Design 58
3.5.2. Stochastic Problems in the Design of Reservoirs 58
3.6. Guidelines for the Hydrological Dimensioning of Reservoirs 59
CHAPTER 4: PRINCIPLES AND CONCEPTS IN THE HYDROLOGIC
DESIGN AND OPERATION OF STORAGE RESERVOIRS 61
4.1. Utilization of Reliability-Based Techniques
in the Hydrologic Design Process 61
4.1.1. The Concept of Reservoir Efficiency Functions 62
4.1.2. The Efficiency Function as a Basis for Storage Determination 65
4.1.3. General Types of Reliability Parameters
vs. Reservoir Efficiency Functions 68
4.1.4. Storage Allocation in Multipurpose Reservoirs 71
4.2. Topographical Characteristic of the Reservoir 72
4.3. Modeling Methodology for the Systems Simulation
of Reservoir Design Problems 75
4.3.1. A Flood Storage Submodel 80
4.4. Optimal Release Policies in the Operation of Multipurpose Reservoirs 81
4.4.1. Stochastic Approach to Establishing an Optimal Release Policy 82
4.5. The Value of Hydrologic Information
in the Management of Reservoirs 83
IX
CHAPTER 5: SYSTEMS APPROACH IN THE HYDROLOGIC DESIGN
AND OPERATION OF STORAGE RESERVOIRS 85
5.1. Hydrologic Models in Water Resource Systems 85
5.1.1. Time Series Models in Hydrologic Modeling 88
5.1.2. Modeling Techniques 89
5.2. Design of Reservoir Storage-Capacity with
Inadequate Hydrologic Data 90
5.2.1. The Need for Synthetic Data: Stochastic Generation
of Synthetic Data and Flow Generation Strategies 91
5.2.2 Multivariate Stochastic Models 92
5.3. Evolution and Philosophy of Stochastic Simulation
in Reservoir Systems Modeling and Design 93
5.4. Deterministic-Stochastic Hybrid Models 95
5.5. Risk and Uncertainty in Reservoir Design 95
5.5.1. Model Verification and Perfonnance 96
5.5.2. Reservoir Perfonnance Reliability 97
5.5.3. Uncertainty Assessment via Sensitivity Analysis 99
5.6. The Hydro-Economics of Reservoir Design 100
5.6.1. Economic Concepts in Reservoir Planning 100
5.6.2. Benefit-Cost and Cost-Effectiveness Analyses
versus Optimal Design from Marginal Analysis 101
5.7. Optimization Techniques as a Design Tool
for Water Resource Systems 102
5.7.1. The Optimization Problem 102
5.7.2. Solution Techniques for the Optimization Problem 103
5.7.3. Multiobjective Optimization in Reservoir Design 104
5.7.4. The Net-Benefit Function Under Optimality Conditions 105
5.8. Optimization Under Uncertainty and Risk 106
CHAPTER 6: HYDROLOGIC ANALYSIS OF FLOOD FLOWS 109
6.1. Design Flood Determination 109
6.1.1. The Selection of an Acceptable Risk Level 110
6.1.2. The Calculation of the Risk of Overtopping III
6.1.3. Hydro-Economic Impact Analysis 112
6.1.4. Modeling the Flood Flows 113
6.2. The Probability of Occurrence of Flood Flows 115
6.2.1. Estimation of the Probability Distribution Function
of the Maximum Flood Flows for Large Rivers 116
6.2.2. Estimation of the Probability Distribution Function
of the Maximum Flood Flows for Small Rivers 118
6.2.3. Estimation of the Probability Distribution Function
of Maximum Floods in the Case of Medium-sized Rivers 120
6.3. Estimation of Flood Flows Using Limited Data 122
6.4. Estimation of Flood Attenuation by Reservoirs 122
x
CHAPTER 7: METHODS OF APPROACH FOR DESIGNING OPTIMAL
STORAGE CAPACITIES AND OPERATIONAL STRATEGIES FOR
MULT IRESERVOIR SYSTEMS 125
7.1. A Review and Classification of Reservoir Capacity-Yield
Estimation Procedures 125
7.2. Critical Period Techniques 126
7.2.1. Reservoir Capacity-Yield Estimation
by Mass-curve Procedure 127
7.3. Probability Matrix Methods 129
7.3.1. Basic Principles of Reservoir Sizing
Using Probabilistic Methods 130
7.4. Reservoir Storage Requirements from Stochastic Data 131
7.4.1. Basic Elements of Stocahstically-Generated Data 132
7.5. Choosing Between Deterministic vs. Probabilistic
vs. Simulation Methods 137
CHAPTER 8: DETERMINATION OF THE OPTIMAL RESERVOIR
STORAGE CAPACITY AND OPERATIONAL PARAMETERS
FOR A RIVER DAM 139
8.1. Screening Models for Multireservoir Systems Design 140
8.1.1. A Cost-Efficient Reservoir Capacity Design
in Multireservoir Systems 141
8.2. Reservoir Network Analyses for Model Development 142
8.3. Formulation of the Reservoir Model and Modeling Methodology 146
8.3.1. Using Monte Carlo Techniques in the Optimal Design
of Reservoir Systems 151
8.4.1. A Multisite Multiseason Flow Generation Strategy 151
8.4.1. The Multivariate Autoregressive AR(l) Model
for the Multisite Annual Generation Scheme 152
8.4.2. The Disaggregation of Annual Streamflow Data 156
8.4.3. Implementation of the Flow Generation Algorithm 157
8.5. Storage-Capacity Allocation to Reservoir Sites 157
8.5.1. Determination of the Reservoir Sizing Factors 158
8.5.2. Incorporating a Reliability Measure 159
8.5.3. Matrix of ,D isa ggregated' Water Demands 160
8.5.4. Matrix of Storage Volumes 162
8.6. Cost-Efficient Capacity Allocations in the Design
of Multireservoir Systems 163
8.7. An Optimal Solution for the Multireservoir System Design 165
8.7.1. The Overall Model Implementation Process 166
8.8. Optimal Storage Capacity Decisions for MuItireservoir Systems 167
CHAPTER 9: HYDROLOGICAL SIZING OF RESERVOIRS
FOR FLOOD PROTECTION 169
9.1. Determination of the Characteristic Hydrograph 169
xi
9.2. Spillway and Sluice Gate Considerations in the Design
and Operation of Flood Retention Reservoirs 170
9.2.l. The Case for a Regulated Sluice 171
9.2.2. The Case for a Closed Sluice 174
9.2.3. The Case for an Opened Sluice 174
9.2.4. Comparison of the Dimensioning Methods 177
9.3. Approximate Evaluation of the Efficiency Function 179
9.4. Emergency Flood Storage 182
9.4.l. Impacts of Emergency Storage in the River System 183
9.5. Design and Operation of an Emergency Flood Control Program 184
CHAPTER 10: APPLICATION OF THE MORAN MODEL
IN RESERVOIR STORAGE DESIGN 187
10.1. The Moran Model 187
10.2. A Proposed Mathematical Model 190
1O.2.l. Determination of the Transition Probabilities 192
10.2.2. Model Application -An Example 201
10.3. A Probabilistic Model for the Determination
of the Reservoir Efficiency Function 204
10.3.l. The Basic Hypotheses 204
10.3.2. The Basic Relationships 205
10.3.3. Determination of the Transition Probability Matrix 206
10.3.4. Determination of the 'Behavior Function' 207
10.4. Concluding Remarks 208
LIST OF REFERENCES AND BIBLIOGRAPHY 209
Literature Cited 209
Additional Suggested Literature 217
Index 221
