The Environmental Effects of Dams
Dams as Physical Barriers| Upstream Migration of Adult Anadromous Fish |
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| Non-seafaring species |
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| Exotic Fish Management |
The Formation of Lakes in River Reaches
| Subsidence and Landslides |
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| Changes in Community Structure |
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| Sedimentation of Lakes |
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| Loss of Sediment and Gravels to Downstream Reaches |
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| Accumulation of Toxins in Lake Sediments |
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| Turbidity |
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| Thermal effects |
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| Greenhouse Gases |
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| Water Losses |
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| Health Risks |
Regulated Lake Levels and River Flows
| Controlled Lake Stage and Reduced Annual/Seasonal Variation |
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| Downstream Flow Fluctuation |
Miscellaneous Effects
Summary of Dam Impacts
The Environmental Effects of Removing Dams
Removing Physical BarriersRemoval of Artificial Lakes from River Systems
| Restored Community Structure in Former Impoundment |
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| Riparian Vegetation and Marginal Wetlands |
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| Restored Conditions in Former Impoundments |
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| Downstream Release of Stored Sediment |
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| Effects on Coastal Areas |
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| Thermal Effects |
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| Greenhouse Gases and Water Losses |
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| Health Risks |
Restored River Flows
Summary of Dam Removal Effects