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Draft Manual - Best Management Practices for Maintenance of Agricultural Waterways in King County, WA

The Manual of Best Management Practices for Maintenance of Agricultural Waterways in King County is a work in progress that provides our thinking to date on how to dredge agricultural drainageways while protecting salmon and water quality.  King County published the manual in April, 2012.

After working for years to offer guidance waterway by waterway, farm by farm, King County partnered with farmers, regulators, tribes, fish interests, the King Conservation District and other parties to develop a more comprehensive and effective approach. Our goal is to protect water quality and fish habitat while streamlining regulatory requirements, reducing county costs, and adequately draining fields for farming.  The manual is one part of that approach.

The Manual of Best Management Practices for Maintenance of Agricultural Waterways in King County is provided in Adobe Acrobat format.  For help with Acrobat, please visit our Acrobat help page.

Download here:

For questions about the Agricultural Drainage Assistance Program or ADAP, please contact Brian Sleight, Supervising Engineer, King County Stormwater Services Section.