Patterson Creek Fish Passage and Stream Maintenance Project

The Patterson Creek Fish Passage and Stream Maintenance Project, managed by the North Coast Regional Water Quality Control Board, focuses on restoring channel capacity in a reach of lower Patterson Creek, a tributary of the Scott River in Etna, Siskiyou County, California. The primary objective is to remove high-flow deposited fine sediment, specifically decomposed granite originating from the upper watershed, which has reduced the stream's capacity and caused water to overflow into adjacent pasture land. By removing these materials, the project aims to reestablish channel capacity and ensure passable conditions for coho salmon across a broader range of stream flows, thereby improving access to critical upstream spawning and rearing habitats. The project is classified under NAICS code 237990 and is currently listed as a forecast posted on November 4, 2025. It qualifies for a categorical exemption under Section 15333 for Small Habitat Restoration Projects, as the total project size does not exceed five acres. The lead agency contact for the project is Jacob Shannon, a Senior Environmental Scientist. The work will be performed at the specific coordinates 41.526128, -122.866774 in Etna, California.