Table 10 to Part 226 - Hydrologic Units and Counties Containing Critical Habitat for Upper Columbia River Spring-run Chinook Salmon, and Dams/Reservoirs Representing the Upstream Extent of Critical Habitat

Hydrologic Unit nameHydrologic Unit numberCounties1 within Hydrologic Unit and within range of ESUDams/ReservoirsChief Joseph17020005Chelan (WA), Douglas (WA), Okanogan (WA)Chief JosephSimilkameen17020007Okanogan (WA)Methow17020008Okanogan (WA)Upper Columbia-Entiat17020010Chelan (WA), Douglas (WA), Grant (WA), Kittitas (WA)Wenatchee17020011Chelan (WA)Upper Columbia-Priest Rapids17020016Benton (WA), Grant (WA), Franklin (WA), Kittitas (WA), Yakima (WA)Middle Columbia-Lake Wallula17070101Benton (WA), Gilliam (OR), Klickitat (WA), Morrow (OR), Sherman (OR), Umatilla (OR), Walla Walla (WA)Middle Columbia-Hood17070105Hood River (OR), Klickitat (WA), Sherman (OR), Skamania (WA), Wasco (OR)Lower Columbia-Sandy17080001Clark (WA), Multnomah (OR), Skamania (WA)Lower Columbia-Clatskanie17080003Clatsop (OR), Columbia (OR), Cowlitz (WA), Wahkiakum (WA)Lower Columbia17080006Clatsop (OR), Pacific (WA), Wahkiakum (WA)Lower Willamette17090012Columbia (OR), Multnomah (OR)1 Some counties have very limited overlap with estuarine, riverine, and riparian habitats identified as critical habitat for this ESU. Consult USGS hydrologic unit maps (available from USGS) to determine specific county and basin boundaries.