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Cowlitz County, WA

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Applications and Reference Materials

Applications

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

Reference Materials

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

  1. Rural Stormwater - Chapter 16.20
  2. Urban Stormwater - Chapter 16.22
  3. Stormwater Program
  4. Stormwater Reports
  5. FAQ
  6. Reference Materials
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