Salmon Snapshots

Trinity River

Restoration Highlights

    • 28 fish passage barriers removed
    • 17 miles of stream made accessible to fish
    • 6 large woody debris structures added for instream habitat
    • 135 acres of riparian corridor restored, including 413,000 native plantings
    • 1 mile of streamside livestock exclusion fence installed
    • 270 miles of roads decommissioned or upgraded to reduce sediment loading to streams
    • 420,000 cubic yards of sediment prevented from reaching streams
    • 200 feet of streambank stabilized
    • 150 stream crossings removed or upgraded

    Restoration Organizations

    Local Restoration Groups

    Other Participants and Agencies

    Priority Restoration Actions

    • Manage effects of hatchery fish on the wild population
    • Increase distribution though barrier removal
    • Improve floodplain and channel structure, including removal or set back of levees and dikes where possible
    • Increase stream flows and create a more dynamic flow regime via Reservoir releases
    • Reduce summertime stream temperatures and water diversions
    • Recruit additional large woody debris in order to increase refugia
    • decommission unused roads in order to reduce sediment delivery

    See restorations actions at Southern Oregon Northern California Coast Coho Final Recovery Plan recovery actions.



    Restoration highlights compiled from DFW Fisheries Restoration Grant Program publicly available information; the UC Davis Information Center for the Environment (ICE) Natural Resource Projects Inventory (NRPI); US Forest Service input; 5 Counties Salmonid Conservation project summaries; Trinity River Restoration Program website; and California Fish Passage Assessment Database (PAD). Metrics from 2000-2012 unless otherwise specified.

    Priority Restoration Actions are the restoration actions listed in the Recovery Strategy section for each coho population in the Final Southern Oregon/Northern California Coast Coho Salmon Recovery Plan.


    The charred trunk, weighing as much as 25,000 pounds, was one of 300 fire-damaged trees that the Yurok Tribe and its partners strategically placed in the South Fork of the Trinity River in an attempt to alter the current, scour out accumulated sediment and restore long-lost salmon habitat in the river. The wood placement project, is being paid for using about $800,000 in grants, with help from the Watershed and Research Training Center in Hay-fork (Trinity County), the U.S. Forest Service and local land owners. Learn more here. Photo by Scott Strazzante / The Chronicle.

    Coho salmon juveniles underwater in the Trinity River at the Old Lewiston Bridge. June 2006. © John Hannon

    In 2017, the West Weaver Creek Salmonid Habitat Rehabilitation Project was completed, restoring channel and floodplain connectivity and improving salmonid habitat along with natural creek function. Specific actions included increasing riffle pool, step pool and boulder cascades; augmenting spawning gravel; adding large wood structures and willow clumps to create habitat in channel and sediment recruitment on floodplain; and grading floodplain to raise water surface elevation and improve connectivity. Trinity County RCD partnered with CA Dept. of Water Resources, Trinity River Restoration Program, private property owners, ESA consultants and state and federal agencies. Learn more.

    Deep Gulch and Sheridan Creek Channel Rehabilitation Projects, completed in fall 2017, enhances the existing habitat, increase the functional floodplain area, and protect existing high-use spawning riffles.  Work included reducing the encroachment of riparian vegetation; placement of large wood material; physical alteration of alluvial features (e.g., placement or excavation of alluvial material to construct floodplains and side channels); construction of large wood hydraulic and habitat
    structures; and removal or replacement of riparian and upland vegetation at strategic locations. Revegetion efforts are now ongoing
    . This is a Trinity River Restoration Program project, lead by the US Bureau of Reclamation and US Bureau of Land Management.

    The Bucktail Project was completed in 2016. A former dredge pit was turned into an artificial beaver pond and was connected to the Trinity River via a side channel. Fortified beaver dams and large wood jams were created to provide places for juvenile fish to hide from high flows and protect themselves from predators. Stores of coarse gravel were positioned to establish spawning beds, and the wetlands were created to be perfect for producing bugs for salmon to feed on and provide refuge from high velocity during high flow events. The combination of channel rehabilitation and river flow is expected to promote alternate bar sequences and low-velocity habitat for salmonid fry; increase habitat complexity; and allow the river to maintain itself as an alluvial system in both treated and untreated areas. The restoration was a collaboration between the Yurok and Hoopa Valley Tribes. © Kenneth DeCamp. Trinity River Restoration Program. 

    The Trinity River Restoration Program (TRRP) implements the 2000 Department of Interior (DOI) Record of Decision, which directs DOI to restore the fisheries of the Trinity River impacted by dam construction and related diversions of the Trinity River Division (TRD) of the Central Valley Project. Water diversions of the TRD compounded impacts from gold mining and historic logging. TRRP focuses on restoration flows (increase in release flows from Trinity Dam), channel rehabilitation, watershed activities, and spawning gravel augmentation to benefit salmonids. The TRRP  is a multi-agency program with eight Partners (US Bureau of Reclamation, US Fish and Wildlife Service,Hoopa Valley Tribe, Yurok Tribe, CA Natural Resources Agency, National Marine Fisheries Service, US Forest Service, and Trinity County) forming the Trinity Management Council (TMC), plus numerous other collaborators. © Bob Wick, BLM California