Alameda County Flood Control & Water Conservation District’s updated Alameda County Hydrology & Hydraulics Manual defines current practice in the hydrologic and hydraulic design of all flood control facilities in Alameda County that are subject to District approval. The guidelines and hydrologic computation techniques in the manual are applicable for hydrologic and hydraulic studies and design beginning January 1994 for the District’s large open-channel projects, and for all projects effective October 2016.

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    The Alameda County Hydrology & Hydraulics Manual may be downloaded free of charge. The District may update the manual and data files in the future.

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    2016 Hydrology & Hydraulics Manual (PDF - 10MB)
    Calculation Form: District Rational (Excel - 70KB)

Hydrology and Hydraulics Manual