Washington State Department of Ecology

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Environmental Studies

OCR, Reclamation, and others studied potential environmental impacts and found them to be negligible and manageable. The studies include:

Final Programmatic Environmental Impact Statement for the Columbia River Management Plan (Chapter 5 addresses the Lake Roosevelt Incremental Storage Releases) (OCR-2007)
Final Supplemental Environmental Impact Statement for the Lake Roosevelt Incremental Storage Releases Program (OCR-2009)
- Full Document
- By Chapter:
  - Cover, Letter, Fact Sheet (1.7 MB)
  - Summary, Chapters 1-2 (711 KB)
  - Chapter 3 (1.8 MB)
  - Chapter 4 (1.9 MB)
  - Chapter 5 (part 1) (2.6 MB)
  - Chapter 5 (part 2) (3.4 MB)
  - Chapter 6-7 (113 KB)
  - Appendices (1.5 MB)
  - Maps (part 1) (5.6 MB)
  - Maps (part 2)
Addendum to the Lake Roosevelt Supplemental EIS (OCR-2009)
Final Environmental Assessment (EA) and Finding of No Significant Impact (USBOR-2009)
Supporting Environmental Studies for the Supplemental EIS

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