US Army Corps of Engineers
Seattle District Website

Document Types

BiOp Biological Opinion
EA Environmental Assessment
EIS Environmental Impact Statement
FONSI Finding of No Significant Impact
FR Feasibility Report
NOA Notice of Availability
NOP Notice of Preparation
ROD Record of Decision
SEA Supplemental Environmental Assessment
SIR Supplemental Information Report
SOF Statement of Findings


Current Environmental Documents

DateBasinProject NameTypeLink
7/22/2021Green-Duwamish RiverHoward A. Hanson Dam Additional Water Storage ProjectFinal FR-EIS Appendix A DesignClick Here
7/22/2021Green-Duwamish RiverHoward A. Hanson Dam Additional Water Storage ProjectFinal FR-EIS Appendix C Cost EstimateClick Here
7/22/2021Green-Duwamish RiverHoward A. Hanson Dam Additional Water Storage ProjectFinal FR-EISClick Here
7/22/2021Green-Duwamish RiverHoward A. Hanson Dam Additional Water Storage ProjectRODClick Here
7/22/2021Green-Duwamish RiverHoward A. Hanson Dam Additional Water Storage ProjectDraft FR-EISClick Here
7/22/2021Green-Duwamish RiverHoward A. Hanson Dam Additional Water Storage ProjectFinal FREIS Appendix F Environmental Part 1--Mitigation CostClick Here
7/22/2021Green-Duwamish RiverHoward A. Hanson Dam Additional Water Storage ProjectFinal FREIS Appendix G Real Estate AssementClick Here
7/22/2021Green-Duwamish RiverHoward A. Hanson Dam Additional Water Storage ProjectFinal FREIS Appendix B Economic EvaluationClick Here
7/22/2021Green-Duwamish RiverHoward A. Hanson Dam Additional Water Storage ProjectFinal FREIS Appendix F Environmental Part 2--WildlifeClick Here
7/22/2021Green-Duwamish RiverHoward A. Hanson Dam Additional Water Storage ProjectFinal FREIS Appendix H Plan FormulationClick Here
7/22/2021Green-Duwamish RiverHoward A. Hanson Dam Additional Water Storage ProjectFinal FREIS Appendix E Geotechnical ConsiderationsClick Here
7/22/2021Green-Duwamish RiverHoward A. Hanson Dam Additional Water Storage ProjectFinal FREIS Appendix D Hydrology and HydraulicsClick Here
7/22/2021Green-Duwamish RiverHoward A. Hanson Dam Additional Water Storage ProjectFinal FREIS Appendix I Agency Coordination and Public ReviewClick Here
7/22/2021Green-Duwamish RiverHoward A. Hanson Dam Additional Water Storage ProjectFinal FREIS Appendix F Environmental Part 1--Fish Mitigation and RestorationClick Here
6/10/2021Nooksack RiverLynden Levee and Culvert RepairFinal EA/FONSIClick Here
4/1/2021Skagit RiverSkagit River Diking Districts 3 and 12 Levee RehabilitationNOPClick Here
4/1/2021Nooksack RiverLynden Levee and Culvert RepairNOPClick Here
1/4/2021Lake BallingerLake Ballinger Aquatic Ecosystem Restoration ProjectFinal FR/EA and FONSIClick Here
1/4/2021Lake BallingerLake Ballinger Aquatic Ecosystem Restoration ProjectFinal Appendix A - 35% Design for the Tentatively Selected PlanClick Here
1/4/2021Lake BallingerLake Ballinger Aquatic Ecosystem Restoration ProjectFinal Appendix B - Environmental DocumentationClick Here
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