Table 11 to Part 226 - Hydrologic Units and Counties Containing Critical Habitat for Central Valley California 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/ReservoirsSacramento-Lower Cow-Lower Clear18020101Shasta (CA), Tehama (CA)Lower Cottonwood18020102Shasta (CA), Tehama (CA)Sacramento-Lower Thomes18020103Butte (CA), Glenn (CA), Tehama (CA)Black Butte DamSacramento-Stone Corral18020104Butte (CA), Colusa (CA), Glenn (CA), Sutter (CA), Yolo (CA)Lower Butte18020105Butte (CA), Colusa (CA), Glenn (CA), Sutter (CA)Centerville DamLower Feather18020106Butte (CA), Sutter (CA), Yuba (CA)Oroville DamLower Yuba18020107Yuba (CA)Lower Bear18020108Placer (CA), Sutter (CA), Yuba (CA)Camp Far West DamLower Sacramento18020109Sacramento (CA), Solano (CA), Sutter (CA), Placer (CA), Yolo (CA)Sacramento-Upper Clear18020112Shasta (CA)Keswick Dam, Whiskeytown DamUpper Elder-Upper Thomes18020114Tehama (CA)Upper Cow-Battle18020118Shasta (CA), Tehama (CA)Mill-Big Chico18020119Butte (CA), Shasta (CA), Tehama (CA)Upper Butte18020120Butte (CA), Tehama (CA)Upper Yuba18020125Nevada (CA), Yuba (CA)Englebright DamSuisun Bay18050001Contra Costa (CA), Napa (CA), Solano (CA)San Pablo Bay18050002Alameda (CA), Contra Costa (CA), Marin (CA), Napa (CA), San Mateo (CA), Solano (CA), Sonoma (CA)San Francisco Bay18050004Alameda (CA), Contra Costa (CA), Marin (CA), San Francisco (CA), San Mateo (CA)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.