HYDROELECTRIC PRACTICE
CONTENTS PART I: SUMMARY AND REVIEW 1 SEDIMENT DYNAMICS POST-DAM REMOVAL: STATE OF THE SCIENCE AND PRACTICE 1 1 PROBLEM STATEMENT 1 2 THE FUTURE OF DAM REMOVAL 1 3 SCOPE 1 4 KEY DAM REMOVAL SEDIMENT ISSUES ADDRESSED IN THE MANUAL 1 5 BUREAU OF RECLAMATION EXPERIENCES 1 6 COMPUTER MODEL VERI? CATION AND FIELD TESTS 1 7 CURRENT AND ONGOING RESEARCH REFERENCES 2 SUMMARY AND SYNTHESIS OF EXPERIMENTAL RESEARCH ON STORED SEDIMENT RESPONSE TO DAM REMOVAL 2 1 INTRODUCTION 2 2 DAM REMOVAL EXPERIMENTS AT ST ANTHONY FALLS, MINNESOTA 2 3 DISCUSSION 2 4 CONCLUSIONS ACKNOWLEDGMENTS PART II: FIELD STUDIES 3 STREAM ECOSYSTEM RESPONSE TO SMALL DAM REMOVALS 3 1 INTRODUCTION 3 2 DAMS AND GEOMORPHOLOGY 3 3 ECOLOGICAL RESPONSE TO DAM REMOVAL 3 4 DISCUSSION 4 BUREAU OF RECLAMATION CASE STUDIES OF DAM REMOVAL 4 1 INTRODUCTION 4 2 CASE STUDIES 4 3 CONCLUSIONS 5 CHANNEL EVOLUTION UPSTREAM OF DAM REMOVAL SITES 5 1 INTRODUCTION 5 2 BACKGROUND 5 3 METHODS 5 4 DAM REMOVAL ANALOGIES 5 5 CHANNEL INCISION AND EVOLUTION MODELS 5 6 RESULTS: THE CHANNEL EVOLUTION MODEL UPSTREAM OF DAMS (CEMUD) 5 7 CONCLUSION 6 THE GEOMORPHIC EFFECTS OF EXISTING DAMS AND HISTORIC DAM REMOVALS IN THE U S MID-ATLANTIC REGION 6 1 INTRODUCTION 6 2 THE TRANSIENT EFFECTS OF DAM REMOVAL: MANATAWNY DAM REMOVAL 6 3 ESTIMATING TIME SCALES OF CHANNEL RECOVERY FROM HISTORIC DAM REMOVALS 6 4 LONG-TERM EFFECTS OF DAM REMOVAL: STUDIES IN PENNSYLVANIA AND MARYLAND PART III: PHYSICAL MODELING 7 PHYSICAL MODELING OF THE REMOVAL OF GLINES CANYON DAM AND LAKE MILLS FROM THE ELWHA RIVER, WASHINGTON 7 1 INTRODUCTION 7 2 METHODS 7 3 RESULTS AND ANALYSIS 7 4 DISCUSSION 7 5 CONCLUSIONS PART IV: NUMERICAL MODELING 8 MODELING AND MEASURING BED ADJUSTMENTS FOR RIVER RESTORATION AND DAM REMOVAL: A STEP TOWARD HABITAT MODELING 8 1 INTRODUCTION 8 2 STUDY SITES 8 3 MODEL AND METHODS 8 4 RESULTS 8 5 DISCUSSION 8 6 CONCLUSION 9 MOVEMENT OF SEDIMENT ACCUMULATIONS 9 1 INTRODUCTION 9 2 MODEL DESCRIPTION 9 3 RESULTS 9 4 CONCLUSIONS 10 GUIDELINES FOR NUMERICAL MODELING OF DAM REMOVALS 10 1 INTRODUCTION 10 2 CONCEPTUAL MODELS 10 3 NUMERICAL MODELS 10 4 SEDIMENT TRANSPORT AND DEPOSITION ALONG THE DOWNSTREAM RIVER CHANNEL 10 5 MODEL UNCERTAINTY AND ADAPTIVE MANAGEMENT 10 6 CONCLUSIONS 11 SEDIMENTATION STUDIES FOR DAM REMOVAL USING HEC-6T 11 1 INTRODUCTION 11 2 REMOVAL OF WASHINGTON WATER POWER DAM 11 3 EFFECTS OF MOUNT ST HELENS ERUPTION: PUMPING SPIRIT LAKE 11 4 CONCEPTUAL MODEL OF CHANNEL AND FLOODPLAIN EVOLUTION 11 5 PRINCIPLES OF RIVER MORPHOLOGY 11 6 FEATURES IN HEC-6T 11 7 SUMMARY AND CONCLUSIONS