Stormwater Facilities

Residential Stormwater Facilities

Whatcom County Code Chapter 20.80.630 determines when a stormwater facility is required for development projects within the Lake Samish, Lake Padden, Birch Bay, or Drayton Harbor watersheds (which are Stormwater Special Districts). These thresholds are:

The 2012 Washington State Department of Ecology Stormwater Management Manual For Western Washington is a technical document. If your project requires the use of this manual, consultation from a Licensed Civil Engineer may be required. 

For stormwater facility requirements in Lake Whatcom, and for areas outside of the Stormwater Special Districts, please see the separate stormwater-related websites for these areas.

Birch Bay