The Trinity River Restoration Program (TRRP) is a multi-agency effort headquartered in Weaverville, California with the goal to restore and sustain natural production of anadromous fish populations downstream of Lewiston Dam to pre-dam levels by restoring natural river processes.
TRRP partners
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include the U. S. Bureau of Reclamation (Reclamation), U. S. Fish and Wildlife Service (Service), NOAA Fisheries, U. S. Forest Service, Hoopa Valley Tribe (HVT), Yurok Tribe, California Natural Resources Agency (Departments of Fish and Wildlife, and Water Resources), and Trinity County (TC).
Information about the TRRP can be found online.