长江委水文局下辖12个管理部门、5个直属机构、7个外业勘测局,分布在长江沿线180万平方公里内。现有在职职工2157人,离退休职工1357人。在长江干流及重要支流控制断面设有水文站118个、水位站264个、雨量站25个、蒸发站2个、水质监测断面227个、水质自动监测站3个、河道固定断面4200多个。长期以来,为长江防洪减灾、流域规划、环境保护和 Yangtze River Hydrographic Bureau under the jurisdiction of 12 management departments, 5 directly under the agency, 7 foreign survey Bureau, located along the Yangtze River within 1.8 million square kilometers. Existing staff of 2157 people, 1,357 retired workers. There are 118 hydrological stations, 264 water stations, 25 rainfall stations, 2 evaporation stations, 227 water quality monitoring sections, 3 water quality automatic monitoring stations and more than 4,200 fixed river sections in the control section of the mainstream of the Yangtze River and important tributaries. For a long time, for the Yangtze River flood control and disaster reduction, river basin planning, environmental protection and