DESCRIPTION
The Lummi Nation Natural Resources Department used this grant to provide a preliminary design for 29 logjams to restore habitat in the South Fork Nooksack River. The Larson's Reach Phase 2 in-stream restoration project is located between river miles 19.6 and 21.2 on the main stem of the South Fork Nooksack, including off channels, in Hamilton, Washington (Skagit County). The goal of the project is to restore salmonid spawning, rearing and holding habitat in order to recover self-sustaining salmonid runs to harvestable levels, by addressing limiting factors in the reach. To achieve this goal, implementing this project will improve connectivity with off channel habitat, increase available thermal refuge for salmonids during summer months, address incision in the reach, and increase key habitat quantity by creating pools associated with logjams as areas of refuge for salmonids. The risk of inaction to the South Fork Early Chinook population is great; the total population has been estimated to be as few as 19 fish. Ensuring that high quality, stable habitat is created as quickly as possible is critical to preserving the South Fork stock.
The Larson's Reach Phase 2 In-stream Restoration Project is listed as a Tier 1a project (high importance and high opportunity) on the WRIA 1 3-year Project Plan List. Phase 1 of the project constructed 6 of 37 conceptual design ELJs. A recent effectiveness monitoring survey on South Fork Nooksack engineered logjam projects recommended the placement of additional structures within the Larson’s Reach.