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Since 2001, RTA has co-taught numerous fish passage assessment and fish passage design and engineering workshops. Partial lists of the entities that have attended workshops include:


Federal Agencies: NOAA/NMFS, USFWS, USFS, USGS, National Park Service, Federal Highways, Army Corps of Engineers, and EPA.


State Agencies: CA Department of Fish and Wildlife, Regional Water Quality Boards, Water Resources Control Board, Department of Water Resources, CalTrans, State Parks, CA Conservation Corps, and Department of Forestry.


County Public Works and Planning Departments: Humboldt, Del Norte, Trinity, Siskiyou, Mendocino, Shasta, Marin, Napa, Sonoma, San Mateo, Santa Cruz, Alameda, San Luis Obispo, Santa Barbara, Ventura, and Orange.


Water Agencies: Los Angeles Department of Water and Power, Sonoma County Water Agency, Solano County Water Agency, Marin Municipal Water District, and the Cachuma Operation and Maintenance Board.


Native American Tribes: Yurok Tribe, Hoopa Tribe, Karuk Tribe, Nez Perce Tribe, and the Hopland Band of Pomo Indians.


Private Consulting Firms: HDR, SHN, URS, NRM, AECOM, GHD, Pacific Watershed Associates, Winzler and Kelly, Laco Associates, Prunuske-Chatham, Northern Hydrology Consultants, Tetra-Tech, Stillwater Associates, Brown and Caldwell, HT Harvey and Associates, and Stoecker Ecological Consulting.


Non-profit Organizations: CalTrout, Trout Unlimited, Salmonid Restoration Federation, Circuit Rider Productions, Community Environmental Council, For Sake of the Salmon, Sonoma Ecology Center, Friends of Corte Madera Creek, and Nooksack Salmon Enhancement Center.

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