The Flood Control District is divided into four departments, each of which serves a unique function.

Although the Flood Control District serves the citizens of Alameda County, it is a completely separate legal entity from the County of Alameda. Many people often mistake or confuse the District with the Alameda County Public Works Agency (which is part of the County of Alameda).

The District relies on the staff of the Alameda County Public Works Agency to carry out its mission. Although staff is shared between the two entities, there is no legal link between the two.


Plans, designs, and secures clearance and permitting for flood control projects including:

  • Upgrades and repairs to older facilities
  • Restoration and enhancements to natural creeks or flood control channels and lakes
  • New infrastructure

Engineering staff also reviews preliminary Federal Emergency Management Agency (FEMA) Flood Insurance Studies, the basis for production of FEMA’s Flood Insurance Rate Maps. Flood Control District input to these maps has saved thousands of property owners the cost of unnecessary flood insurance.

Staff use rainfall and stream flow data to update and calibrate stream flow models and rainfall statistics. To supplement the Flood Control District’s network of rainfall gauges, the department oversees collection of rainfall data by volunteers throughout the county.

The District’s Clean Water Program oversees the Alameda Countywide Clean Water Program and represents the county’s unincorporated areas as one of 77 co-permittees regulated by the new joint Municipal Regional Stormwater Permit (MRP) issued under the federal NPDES (National Pollutant Discharge Elimination System) by the California Regional Water Quality Control Board of the San Francisco Bay Region. The program complies with federal and state requirements to improve water quality and better manage urban runoff. Clean Water staff also oversees permit compliance activities for the Flood Control District and unincorporated county areas.

Maintenance and Operations

Keeps rainwater moving from community streets to the San Francisco Bay by:

  • Inspecting over 500 miles of conduit, channel, and natural creeks and approximately 3,750 drop inlets
  • Clearing excess vegetation, sediment, and debris and keeping fences intact
  • Inspecting and repairing, as needed, the Flood Control District’s 22 pump stations
  • Inspecting and maintaining over 3,700 County tide gates
  • Working with other District staff to plan flood control infrastructure upgrades

Maintenance and Operations staff keep the public safe by:

  • Providing hazardous spill response
  • Inspecting damaged trees and reducing fire hazards
  • Providing sand bag supplies
  • Serving as an Emergency Response Unit during natural disasters

Construction and Development

The Land Development Division reviews all private and public developments in the county’s unincorporated areas for compliance with accepted engineering standards, environmental requirements, and Flood Control District ordinances. Development Services staff review design documents and issue permits for new developments in the unincorporated areas.

The Construction Division inspects all flood control related construction in unincorporated areas to ensure that facilities are constructed in accordance with engineered plans. Laboratory testing and contract administration are also managed by this Division.

Management Services

Handles the Flood Control District’s human resources, accounting, information technology, and other administrative services.