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Existing 401 Certifications for Dams

Below are links to most of the hydropower 401 certifications that Ecology has issued, denied or waived in the past 20 years.

Note:  Available in Adobe Acrobat (.PDF file) format. To view and/or print PDF files, you first will need to download and install Adobe Reader.

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Anderson Creek

Baker River Hydroelectric Project

Box Canyon

Box Canyon Amendment

Burnham Creek

Calligan Creek

Cedar Creek Waiver

Chelan Lake

Cispus Denial

Condit Cert

Cow Fall 401

Cowlitz Falls License Order

Cowlitz River

• Amended Order No. DE 02WQSR-4098A-01
• Supplemental Order in #01SEASR-3367 on Remand from PCHB #02-022

Cushman WQC 401

Elkhorn

Elwha Dam

Enloe Dam

Grant Turbine Upgrade

Koma Kulshan Project 401 (Sulfur And Rocky)

Lake Chelan

Lewis River Hydroelectric Projects:

• Merwin
  • Amendment No. 1
  • Amendment No. 2
• Yale
  • Amendment No. 1
  • Amendment No. 2
• Swift No. 1
  • Amendment No. 1
  • Amendment No. 2
• Swift No. 2
  • Order No. 3927
  • Amendment No. 2
  • Amendment No. 3

Meyers Falls

Monroe Street

Nisqually

Priest Rapids Hydroelectric Project

Rocky Creek

Rocky Reach

Rocky Reach Pool Raise

Skagit Waiver

Snoqualmie Falls 401 WQC

Sullivan Creek

Trinity Hydro 401 Cert

Twin Falls Hydro License

Amended Order

Upriver Dam Spokane

White River

Yelm Centralia Diversion

Youngs Creek

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