Skip to content

Skagit River Relicensing Project: Geomorphic Assessment Between Gorge Dam and the Sauk River

Fain Environmental is performing a geomorphic assessment of approximately 30 miles along the Skagit River, between the Gorge Dam and the Sauk River for the Skagit Relicensing Project. Fain Environmental used historic air photos to identify the spatial distribution and variability of large wood over time.  We collected field data for aquatic habitat and large wood in the main river, 50 side channels, and 20 tributaries. Fain Environmental is characterizing the current condition of aquatic habitat in the reach and how Skagit River dam operations-related changes in peak flows affect geomorphic processes and cumulative effects in the reach.

Location: Skagit and Whatcom County, Washington

Owner: Seattle City Light

Year: 2021


  • Remote Sensing Analysis
  • Geomorphic Assessment
  • Large Wood Inventory and Characterization