Stormwater and Land Disturbance
Planning and Development Services | Stormwater and Land Disturbance
Skagit County has adopted the 2024 Stormwater Management Manual for Western Washington (SWMMWW).
Skagit County is subject to a National Pollutant Discharge Elimination System (NPDES) permit that can result in significant penalties upon the County and property owners if polluted water is discharged to ditches or streams. Stormwater management is governed by Skagit County Code Chapter 14.32. All land disturbing activity must manage stormwater consistent with Skagit County Code.
The NPDES Permit Area is the area of unincorporated Skagit County defined by the Department of Ecology’s Phase II Western Washington Municipal Stormwater Permit, issued pursuant to the federal National Pollutant Discharge Elimination System. Whether your project is inside or outside the permit area is important to determining your stormwater requirements.
To determine if your property is in the NPDES Permit Area, view the NPDES Permit Area map.
