Regional Board Boundary Features

The California State Water Resources Control Board (State Water Board) and the nine Regional Water Quality Control Boards (Regional Water Boards), collectively known as the California Water Boards (Water Boards), are dedicated to a single vision: abundant clean water for human uses and environmental protection to sustain California’s future. Under the federal Clean Water Act (CWA) and the state’s pioneering Porter-Cologne Water Quality Control Act, the State and Regional Water Boards have regulatory responsibility for protecting the water quality of nearly 1.6 million acres of lakes, 1.3 million acres of bays and estuaries, 211,000 miles of rivers and streams, and about 1,100 miles of California coastline. The State Water Board is located in Sacramento. There are nine Regional Water Boards, the boundaries of which are generally based on watersheds, also known as hydrologic areas. The nine Regional Water Boards are referred to by specific names, which are: (1) North Coast, (2) San Francisco Bay, (3) Central Coast, (4) Los Angeles, (5) Central Valley, (6) Lahontan, (7) Colorado River Basin, (8) Santa Ana, and (9) San Diego. Due to their size, and/or geographic spread, the Central Valley Board has three offices and the Lahontan Board has two offices. In addition, the Drinking Water Program has fourteen District offices spread throughout the state. This map service shows the jurisdictional boundaries of the nine Regional Water Boards and the locations of their administrative offices. The official legal definitions of Regional Water Quality Control Board jurisdictions may be found in the Section 13200 of the California Water Code. For more information, please visit the California Water Boards website at https://www.waterboards.ca.gov.加利福尼亚州水资源控制委员会（California State Water Resources Control Board，下称州水委会）与九个区域水质控制委员会（Regional Water Quality Control Boards，下称区域水委会），合称为加利福尼亚水委会（California Water Boards，下称加州水委会），致力于实现统一愿景：为人类用水提供充足洁净水源，并开展环境保护工作以支撑加利福尼亚州的未来发展。 依据联邦《清洁水法》（Clean Water Act，CWA）以及本州开创性的《波特-科隆格水质控制法》（Porter-Cologne Water Quality Control Act），州水委会与区域水委会承担监管职责，负责保护近160万英亩湖泊、130万英亩海湾与河口、21.1万英里河流与溪流，以及约1100英里加利福尼亚海岸线的水质。 州水委会总部位于萨克拉门托。九家区域水委会的辖区边界通常以流域（亦称水文区域）为依据划定。九家区域水委会的具体名称依次为：(1) 北海岸区域水委会，(2) 旧金山湾区域水委会，(3) 中海岸区域水委会，(4) 洛杉矶区域水委会，(5) 中央谷区域水委会，(6) 拉洪坦区域水委会，(7) 科罗拉多河流域区域水委会，(8) 圣安娜区域水委会，(9) 圣迭戈区域水委会。 受辖区规模及/或地理分布范围影响，中央谷区域水委会设有三处办公场所，拉洪坦区域水委会设有两处办公场所。此外，饮用水项目在全州范围内设有14个地区办事处。 本地图服务展示了九家区域水委会的管辖边界及其行政办公地点的位置。区域水质控制委员会管辖范围的正式法律定义可查阅《加利福尼亚州水法典》第13200条。如需获取更多信息，请访问加州水委会官方网站：https://www.waterboards.ca.gov。