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Best Management Practices (BMPs) for Storm and Surface Water Management

This page provides examples of best management practices for storm and surface water management in Washington State.

It is part of MRSC's series on Storm and Surface Water Management.


Best Management Practices (BMPs) refer to methods of controlling and mitigating the adverse impacts of development and redevelopment. BMPs are defined in the state's storm water Manual as "schedules of activities, prohibitions of practices, maintenance procedures, and structural and/or managerial practices, that when used singly or in combination, prevent or reduce the release of pollutants to waters of Washington State." The types of BMPs identified by the state are source control, runoff treatment, and flow control.

The primary purpose of using BMPs is to protect beneficial uses of water resources through the reduction of pollutant loads and concentrations, and through reduction of discharges (volumetric flow rates) causing stream channel erosion.

Additional resources include the Association of Washington Cities Stormwater Program: Best Practices for Effectiveness and the Department of Ecology's Puget Sound Ecosystem Monitoring Program Stormwater Work Group page.

General Best Management Practices

Treatment Best Management Practices

Local Government Examples

Best Management Practices for Specific Facilities

Construction BMPs

Commercial/Industrial/Manufacturing BMPs

Public Property


Last Modified: April 02, 2021