Table 24 to Part 226 - Hydrologic Units and Counties Containing Critical Habitat for Middle Columbia River Steelhead, and Dams/Reservoirs Representing the Upstream Extent of Critical Habitat

Hydrologic Unit nameHydrologic Unit numberCounties1 within Hydrologic Unit and within range of ESUDams/ReservoirsUpper Columbia-Priest Rapids17020016Benton (WA), Franklin (WA)Upper Yakima17030001Kittitas (WA), Yakima (WA)Naches17030002Kittitas (WA), Yakima (WA)Lower Yakima17030003Benton (WA), Klickitat (WA), Yakima (WA)Middle Columbia-Lake Wallula17070101Gilliam (OR), Morrow (OR), Umatilla (OR), Benton (WA), Klickitat (WA), Sherman (OR), Walla Walla (WA), Yakima (WA)Walla Walla17070102Umatilla (OR), Wallowa (OR), Columbia (WA), Walla Walla (WA)Umatilla17070103Morrow (OR), Umatilla (OR), Union (OR)Willow17070104Morrow (OR), Gilliam (OR)Middle Columbia-Hood17070105Hood River (OR), Sherman (OR), Wasco (OR), Klickitat (WA), Skamania (WA)Condit DamKlickitat17070106Klickitat (WA), Yakima (WA)Upper John Day17070201Crook (OR), Grant (OR), Harney (OR), Wheeler (OR),North Fork John Day17070202Grant (OR), Morrow (OR), Umatilla (OR), Union (OR), Wheeler (OR)Middle Fork John Day17070203Grant (OR)Lower John Day17070204Crook (OR), Gilliam (OR), Grant (OR), Jefferson (OR), Morrow (OR), Sherman (OR), Wasco (OR), Wheeler (OR)Lower Deschutes17070306Hood River (OR), Jefferson (OR), Sherman (OR), Wasco (OR)Pelton DamTrout17070307Crook (OR), Jefferson (OR), Wasco (OR)Lower Columbia-Sandy17080001Multnomah (OR), Clark (WA), Skamania (WA)Lower Columbia-Clatskanie17080003Clatsop (OR), Columbia (WA), 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, or riparian habitats identified as critical habitat for this ESU. Consult USGS hydrologic unit maps (available from USGS) to determine specific county and basin boundaries.