Alameda County Hydrology and Hydraulics

Hydrology is the scientific study of the waters of the earth, especially with relation to the effects of precipitation and evaporation upon the occurrence and character of water in streams, lakes, and on or below the land surface. Hydraulics is the engineering analysis of the flow of water in open channels, closed conduits, hydraulic structures, and hydraulic machines (pumps and turbines, for example).

Hydrology and hydraulics are an integral part of the Alameda County Flood Control District's work. The Flood Control District collects hydrologic data in the form of precipiation and stream flow measurements. The District has also developed a Hydrology & Hydraulics Manual that outlines the District's requirements for new developments and modifications of existing flood control systems.