Create a Website Account - Manage notification subscriptions, save form progress and more.
Stormwater Submittal Form (PDF) (NEEDS TO BE FILLED OUT WITH ALL STORMWATER APPLICATION)
Minor Project Stormwater Form (PDF)
Small Project Stormwater Site Plan Short Form (PDF)
Major Project Stormwater Intake Form (PDF)
Flow Chart (PDF)
Department of Ecology -industrial Stormwater Permit
Department of Ecology -Construction Stormwater Permit
EPIC Planning Clearance Information (check for critical areas)
Raingarden Info
Soil Amendment Info
Dike vs Hillside Map (PDF)
Department of Ecology - 2014 SWMMWW
Department of Ecology - 2019 SWMMWW
Cowlitz County Stormwater Drainage Manual - Updated June 2022
2019-2024 Western Washington Phase II Municipal Stormwater Permit
