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Draft Environmental Impact Statement
The complete draft EIS is a large document. We suggest reading the Executive Summary (17mb pdf) first, which provides an overview of the major environmental effects of the Preferred Alternative. It is not intended to be a substitute for the draft EIS below.
The table below contains the complete draft EIS broken down into multiple pdf documents.
To see the contents of a document below, click the +
Document Contents: • Columbia River System Operations Draft Environmental Impact Statement Abstract • Executive Summary • Table of Contents • Acronyms and Abbreviations • Glossary • Datum Conversion • Chapter 1 - Introduction • Chapter 2 - Alternatives
Document Contents: • Chapter 3 - Affected Environment and Environmental Consequences
Document Contents: • Chapter 4 - Climate • Chapter 5 - Mitigation • Chapter 6 - Cumulative Effects • Chapter 7 - Preferred Alternative • Chapter 8 - Compliance with Environmental Laws, Regulations, and Executive Orders • Chapter 9 - Coordination and Public Involvement Process • Chapter 10 - Preparers • Chapter 11 - References • Chapter 12 - List of Appendices • Chapter 13 - Index
Document Contents: • Appendix A - Alternatives Development • Appendix B - Hydrology and Hydraulics Data Analysys
Document Contents: • Appendix C - River Mechanics
Document Contents:• Appendix D - Water and Sediment Quality
Document Contents:• Appendix E - Fish, Aquatic Macroinvertebrates, and Aquatic Habitat • Appendix F - Vegetation, Wetlands, and Wildlife • Appendix G - Air Quality and Greenhouse Gases • Appendix H - Power and Transmission • Appendix I - Hydroregulation • Appendix J - Hydropower • Appendix K - Flood Risk Management • Appendix L - Navigation and Transportation • Appendix M - Recreation • Appendix N - Water Supply Physical and Socioeconomic Methods and Analysis • Appendix O - Environmental Justice
Document Contents:• Appendix P - Tribal Perspectives
Document Contents:• Appendix Q - Cost Analysis • Appendix R - Monitoring and Adaptive Management • Appendix S - Public Scoping Report for the Columbia River System Operations Environmental Impact Statement • Appendix T - Comments and Responses
Document Contents:• Appendix U - Fish and Wildlife Coordination Report on the Columbia River System Operations
Document Contents:• Appendix V - Columbia River System Biological Assessment