Secretarial Determination Overview Report
- Klamath Dam Removal Overview Report for the Secretary of the Interior: an Assessment of Science and Technical Information
- Executive Summary (PDF, 2.7 MB)
- Complete Version (PDF, 22 MB)
- Individual Sections for faster download
- Table of Contents (PDF 316 KB)
- Section 1 - Introduction (PDF, 756 KB)
- Section 2 - Technical Input and Public Outreach Process (PDF, 465 KB)
- Section 3 - Data Collection Process (PDF, 456 KB)
- Section 4 - Secretarial Determination Findings of Technical Studies (PDF, 14 MB)
- Section 5 - Summary and Conclusions (PDF, 616 KB)
- Section 6 - References (PDF, 357 KB)
Secretarial Determination Studies
The following studies/reports have been or will be conducted as part of the Secretarial Determination Process
Engineering, Geomorphology/Construction Studies & Information
- Detailed Plan for Dam Removal – Klamath River Dams, Klamath Hydroelectric Project, FERC License No. 2082, Oregon - California (PDF, 14 MB)
- Attachment A: Existing Feature Layout Figures (PDF, 13.3 MB)
- Attachment B: Storage and Discharge Capacity Tables (PDF, 191 KB)
- Attachment C: Preliminary Construction Schedules (PDF, 163 KB)
- Attachment D: Cost Estimate Worksheets (PDF, 16 MB)
- Attachment E: Dive Report (PDF, 3.1 MB)
- Klamath River Sediment Sampling Program: Phase 1 Geologic Investigations. Vol. 1 and Vol. 2 (PDF, 98 MB)
- Klamath River Dams Project: Geospatial Base Map Data Dictionary (PDF, 243 KB)
- Reclamation (2011). “Hydrology, Hydraulics and Sediment Transport Studies for the Secretary’s Determination on Klamath River Dam Removal and Basin Restoration,” Technical Report No. SRH-2011-02. Prepared for Mid-Pacific Region, US Bureau of Reclamation, Technical Service Center, Denver, CO.
- Errata (Jan. 2012)
- Complete Report, (PDF, 172 MB)
- By Individual Chapters
- 01. Executive Summary (PDF, 10.6 MB)
- 02. Existing Hydrology Conditions (PDF,5.2 MB)
- 03. Existing Groundwater Conditions (PDF 36 MB)
- 04. Existing Hydraulic Conditions (PDF, 4.01 MB)
- 05. Existing Geomorphology and Sediment Transport Conditions (PDF, 46 MB)
- 06. Future Hydrology Conditions (PDF, 1.05 MB)
- 07. Future Groundwater Conditions (PDF, 426 KB)
- 08. Future Hydraulic Conditions (PDF, 432 KB)
- 09. Future Geomorphology and Sediment Transport Conditions (PDF, 13.5 MB)
- 10. Infrastructure Impacts of Dam Removal Alternative (PDF, 27 MB)
- 11. Climate Change Effects (PDF, 651 KB)
- 12. References (PDF, 79.6 KB)
- 13. Appendix A. Flood Frequency Report (PDF, 12.7 MB)
- 14. Appendix B. Hydraulic Conditions Downstream of Iron Gate Dam (PDF, 313 KB)
- 15. Appendix C. Jet Test Results from TSC (PDF,107 KB)
- 16. Appendix D. Report on Erodibility Characteristics of Reservoir Sediment by Agricultural Research Service (PDF, 451 KB)
- 17. Appendix E. Documentation of Hydrology Simulations for the Klamath Dam Removal Studies (PDF, 1.96 MB)
- 18. Appendix F. Exceedance Flows for No Action and Dam Removal Alternatives Based Upon Index Sequential Hydrology (PDF, 543 KB)
- 19. Appendix G. Mapping of 100-year Flood Plain under No Action and Dam Removal Alternatives (PDF, 13.7 MB)
- 20. Appendix H. Geomorphic Mapping (PDF, 4.7 MB)
- 21. Appendix I. Drill Logs of Groundwater Wells near PacifiCorp Reservoirs (PDF, 1 MB)
- 22. Appendix J. Reference Sediment Motion (PDF, 80 KB)
- 23. Appendix K. Other Drawdown Scenarios Analyzed (PDF, 3.8 MB)
Water Quality Studies & Information
- Sediment Chemistry Investigation: Sampling, Analysis, and Quality Assurance Findings for Klamath River Reservoirs and Estuary, October 2009 - January 2010 (PDF, 8.7 MB)
- "Screening-Level Evaluation of Contaminants in Sediments from Three Reservoirs and the Estuary of the Klamath River, 2009-2011". (PDF, 5 MB)
- “Model Development and Estimation of Short-term Impacts of Dam Removal on Dissolved Oxygen in the Klamath River.” (PDF, 3.1 MB)
- "Assessment of Long Term Water Quality Changes for the Klamath River Basin Resulting from KHSA, KBRA, and TMDL and NPS Reduction Programs". (PDF, 908 KB)
- Quality Assurance Project Plan, Sediment Contaminant Study, Klamath River Sediment Sampling Program
- Simulating Water Temperature of the Klamath River under Dam Removal and Climate Change Scenarios By Russell W. Perry, John C. Risley, Scott J. Brewer, Edward C. Jones, and Dennis W. Rondorf (PDF, 5.4 MB)
Background Information on Sediments
- Klamath Reservoir Sediment Investigation
- Q and A's for Klamath Reservoir Sediment Investigation
- Summary of Klamath Secretarial Determination preliminary dioxin findings
- Aug. 30, 2011 -- Memo from Dennis Lynch: Infeasibility of the mechanical removal of reservoir bottom sediments if Klamath River dams are removed in 2020
- Documents Referenced in Memo
- Feasibility, Risk, and Uncertainty of Mechanical Sediment Removal with the Proposed Action (Full Facility Removal)
Klamath Sediment Process, Sediment Management in the Reservoirs
Klamath Dam Removal Drawdown Scenario 8: Potential impacts of suspended sediments on focal fish species with and without mechanical sediment removal. Final Technical Memorandum
- Documents Referenced in Memo
- EPA Memo: Compilation and discussion of sediment quality values for dioxin, and their relevance to potential removal of dams on the Klamath River 1/13/10, (PDF, 90 KB)
Biological (Fish and Wildlife) Studies & Information
- Forecasting the response of Klamath Basin Chinook populations to dam removal and restoration of anadromy versus no action (Hendrix 2011)
- Using model selection and model averaging to predict the response of Chinook salmon to dam removal (Lindley and Davis, 2011)
- Center for Independent Experts (CIE) Peer Review (E. Eric Knudsen, 2011)
- Center for Independent Experts (CIE) Peer Review (Marc Labelle, 2011)
- Center for Independent Experts (CIE) Review (John G. Williams, 2011)
- FINAL -- Synthesis of the Effects to Fish Species of Two Management Scenarios for the the Secretarial Determination on Removal of the Lower Four Dams on the Klamath River 6/13/11, PDF 1.04 MB)
Peer Review 8/4/10 (PDF, 1.1 MB)
- PBS&J - Final Report from Expert Panel on Lamprey 1/14/11, (PDF 3.5 MB)
- PBS&J - Final Report from Expert Panel on Resident Fish 4/11/1, (PDF, 2.6 MB)
- PBS&J - Final Report from Expert Panel on Coho/Steelhead 4/25/11, (PDF, 4.25 MB)
- PBS&J - Final Report from Expert Panel on Chinook Salmon - Addendum, 7/20/11, (PDF, 5.9 MB)
- Effects of the Klamath Basin Restoration Agreement to Lower Klamath, Tule Lake and Upper Klamath National Wildlife Refuge, Mauser and Mayer, June 7, 2011 (PDF 73 MB)
- Compilation of Information Relating to Myxozoan Disease Effects to Inform the Klamath Basin Restoration Agreement (Bartholomew and Foott, 2010)
- Klamath Dam Removal Drawdown Scenario 8: Potential Impacts of Suspended Sediments on Focal Fish Species with and without Mechanical Sediment Removal. (Stillwater Sciences 2011) (PDF, 1.5 MB)
Expert Review Documents of Existing Studies and Reports
- Nov. 15, 2010 - Expert Review of Hetrick, et.al,2009,
Economic Studies & Information
- Klamath River Restoration Nonuse Value Survey Final Report (PDF, 2 MB)
- Economics and Tribal Summary Technical Report For the Secretarial Determination on Whether to Remove Four Dams on the Klamath River in California and Oregon -- Updated Jan. 2012 (PDF, 6.2 MB)
- Benefit Cost and Regional Economic Development Technical Report For the Secretarial Determination on Whether to Remove Four Dams on the Klamath River in California and Oregon - Updated Jan. 2012) (PDF, 6.2 MB)
- Irrigated Agriculture Economics Technical Report For the Secretarial Determination on Whether to Remove Four Dams on the Klamath River in California and Oregon
- Commercial Fishing Economics Technical Report For the Secretarial Determination on Whether to Remove Four Dams on the Klamath River in California and Oregon
- In-River Sport Fishing Economics Technical Report For the Secretarial Determination on Whether to Remove Four Dams on the Klamath River in California and Oregon
- Ocean Sport Fishing Economics Technical Report For the Secretarial Determination on Whether to Remove Four Dams on the Klamath River in California and Oregon
- Reservoir Recreation Economics Technical Report For the Secretarial Determination on Whether to Remove Four Dams on the Klamath River in California and Oregon
- Hydropower Benefits Technical Report For the Secretarial Determination on Whether to Remove Four Dams on the Klamath River in California and Oregon
- Refuge Recreation Economics Technical Report for the Secretarial Determination on Whether to Remove Four Dams on the Klamath River in California and Oregon, 2011
- Hoopa Valley Tribe Sociocultural/Socioeconomics Effects Analysis Technical Report
- Karuk Tribe Sociocultural/Socioeconomics Effects Analysis Technical Report
- Klamath Tribes Sociocultural/Socioeconomics Effects Analysis Technical Report
- Resighini Rancheria Tribe Sociocultural/Socioeconomics Effects Analysis Technical Report
- Yurok Tribe Sociocultural/Socioeconomics Effects Analysis Technical Report
- Hoopa Valley Tribe Fishery Socioeconomics Technical Report
- Karuk Tribe Fishery SocioeconomicsTechnical Report
- Klamath Tribes Fishery SocioeconomicsTechnical Report
- Resighini Rancheria Fishery Socioeconomics Technical Report
- Yurok Tribe Fishery Socioeconomics Technical Report
- Whitewater Boating Recreation Economics Technical Report for the Secretarial Determination on Whether to Remove Four Dams on the Klamath River in California and Oregon. U.S. Department of the Interior, Office of Policy Analysis, September 2011. (PDF, 286 KB)
Cultural/Tribal Reports (Associated with Federally Recognized Tribes)
- Background Technical Report Informing the Secretarial Determination Overview Report: Current Effects of PacifiCorp Dams on Indian Trust Resources and Cultural Values, June 2011 (PDF, 498 KB)
- Appendices, June 2011, (PDF 414 KB)
Real Estate Studies & Information
- Market Study of Potential Impacts to Private Land Values (PDF, 6.5 MB)
Additional Background Documents
- Klamath Settlement Process Greenhouse Gas Emissions from Power Replacement Technical Memorandum January 2012
- Klamath Settlement Process Opinion of Probable Construction Cost for Removal of Reservoir Sediments in the Klamath Basin March 2011
- KBRA Regional Economic Effects IMPLAN Analysis Sept. 2011
- Understanding Klamath Salmon Allocations (1998)
- Projected Restoration Actions and Associated Costs Under the Klamath Basin Restoration Agreement for the Upper Klamath River Basin Above Keno, Oregon, (Barry, et.al., 2011)
- FEMA Flood Insurance Study for Siskiyou County, California (FEMA, Effective Jan. 19, 2011).