Columbia River reports & documents

Here you will find all our associated documents for the Office of Columbia River. We work diligently to document and report the work we do to develop water supplies that provide both instream and out-of-stream benefits as mandated by the Legislature.

Photo representing the covers of three Office of Columbia Reports — Water supply forecasts, integrated management plans, and an atlas on fish streamflow needs are among the reports prepared by the Office of Columbia River.

Water supply and demand analysis, environmental reviews, focus sheets

In support of our work to find water solutions in the Columbia River Basin, we undertake scientific studies, and prepare project reports and analysis. These reports include project environmental reviews, feasibility studies, economic analysis, focus sheets, legislative updates, and at-a-glance products.

You'll find a comprehensive list of all our project work publications and studies at these links

Legislative Reports
Columbia River mainstem water rights tracking system

Environmental Impact Statements

Final Programmatic Environmental Impact Statement For The Columbia River Water Management Program
Final Programmatic Environmental Impact Statement for the Icicle Creek Water Resource Management Strategy
Lake Roosevelt Incremental Storage Releases
- Final Supplemental Environmental Statement for the Lake Roosevelt Incremental Storage Releases Program
- Addendum to the Final Supplemental Environmental Impact Statement for the Lake Roosevelt Incremental Storage Releases Program
Odessa Subarea Special Study Final Environmental Impact Statement
Kachess Drought Relief Pumping Plant and Keechelus Reservoir-to-Kachess Reservoir Conveyance Final Environmental Impact Statement
Yakima River Basin Integrated Water Resource Management Plan Final Programmatic Environmental Impact Statement
Final EIS, Yakima River Basin Integrated Water Resource Management Alternative
Cle Elum Dam Fish Passage Facilities and Fish Reintroduction Project FEIS
Condit Dam Removal, Final Second Supplemental Environmental Impact Statement

Other State Environmental Policy Act Documents

Determination of Significance, Switzler Reservoir Project
State Environmental Policy Act Mitigated Determination Of Nonsignificance for Kennewick General Hospital water right
Potholes Supplemenatl Feed Route
- Mitigated Determination of Non-Significance, Potholes Supplemental Feed Route Project Phase 1
- Mitigated Determination of Non-Significance, Potholes Supplemental Feed Route Project Phase 2

Other Studies and Reports

Appraisal Evaluation of Columbia River Mainstem Off-Channel Storage Options (Vols I and II)
Columbia River Water Management Program on Lower Crab Creek’s Aquatic Ecosystem: Emphasis on Native Salmonids
Groundwater Storage Potential in the Yakima River Basin: A Spatial Assessment of Shallow Aquifer Recharge and Aquifer Storage and Recovery
Icicle Peshastin Irrigation District Pump Exchange Project Appraisal Report
Lincoln County Conservation District Passive Rehydration Assessment
Retiming Benefits Analysis for Conservation in the Walla Walla, Horse Heaven Hills and Southern Franklin County Study Areas
Spokane Valley-Rathdrum Prairie Aquifer Optimized Recharge for Summer Flow Augmentation of the Columbia River

Contact information

Tim Poppleton
Office of Columbia River web coordinator
tim.poppleton@ecy.wa.gov
509-454-4241

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Columbia River reports & documents

Water supply and demand analysis, environmental reviews, focus sheets

Related links

Contact information