Discharge Permits for Federal Hydroelectric Projects in the Lower Columbia River
Below are EPA's National Pollutant Discharge Elimination System (NPDES) discharge permits for the following hydroelectric generating facilities on the lower Columbia River operated by the U.S. Army Corps of Engineers:
- Bonneville Project (WA0026778)
- The Dalles Lock and Dam (WA0026701)
- John Day Project (WA0026832)
- McNary Lock and Dam (WA0026824)
Effective date: July 1, 2023
Modified: February 16, 2024
Permits expire: June 30, 2028
For information about Oregon’s objection under Clean Water Act Section 401(a)(2), visit Public Hearing on Proposed Discharge Permits for Federal Hydroelectric Projects in the Lower Columbia River.
Related permits: Discharge Permits for Federal Hydroelectric Projects in the Lower Snake River
Final Permits
- NPDES Permit, Bonneville Project, Lower Columbia River, #WA0026778 (pdf)
- NPDES Permit, The Dalles Lock and Dam, Lower Columbia River, #WA0026701 (pdf)
- NPDES Permit, John Day Project, Lower Columbia River, #WA0026832 (pdf)
- NPDES Permit, McNary Lock and Dam, Lower Columbia River, #WA0026824 (pdf)
Public Comments
- Response to Comments on 2023 Draft Modification to NPDES Permits for Federal Hydroelectric Facilities in the Lower Columbia and Snake Rivers (pdf)
- Response to Comments on Draft NPDES Permits for Federal Hydroelectric Facilities in the Lower Columbia River (pdf)
- Public Comments on 2021 Draft NPDES Permits for Federal Hydroelectric Facilities in the Lower Columbia and Snake Rivers (pdf)
- Public Comments on 2020 Draft NPDES Permits for Federal Hydroelectric Facilities in the Lower Columbia and Snake Rivers (pdf)
Fact Sheets
- 2023 NPDES Permit Fact Sheet, Federal Hydroelectric Projects in the Lower Columbia and Snake Rivers (pdf)
- 2022 NPDES Permit Fact Sheet, U.S. Army Corps of Engineers Lower Columbia River Hydroelectric Facilities: #WA0026778, #WA0026701, #WA0026832, #WA0026824 (pdf)
- 2021 NPDES Permit Fact Sheet, U.S. Army Corps of Engineers Lower Columbia River Hydroelectric Facilities: #WA0026778, #WA0026701, #WA0026832, #WA0026824 (pdf)
- 2020 NPDES Permit Fact Sheet, U.S. Army Corps of Engineers Lower Columbia River Hydroelectric Facilities: #WA0026778, #WA0026701, #WA0026832, #WA0026824 (pdf)