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Planning & Public Works
Stormwater & Flooding
Channel Migration Reports
All Basin Plans
Listing of adopted basin plans. See Our Projects page for listing of basin plans that are in progress.
View Pierce County's
2020-2025 Surface Water Improvement Program
Rivers Flood Hazard Management Plan
Plan focused on the main stems of rivers in Pierce County, including: Puyallup, White, Carbon, Nisqually, Green and Mashel rivers and South Prairie Creek.
Fact Sheets & Brochures
Browse various fact sheets and brochures provided by Pierce County.
Check out annual National Pollutant Discharge Elimination System (NPDES) reports.
Spanaway Lake Management Plan
Stormwater Management & Site Development Manual
Approved in December 2015
2015 PCSWMM AutoCad Files (43mb)
This is Stormwater Management & Site Development Manual by Volume available for engineers.
Access studies related to Surface Water Management division.
System Wide Improvement Framework (SWIF)
View weather data for weather station locations around Pierce County.
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2702 S 42nd St, Ste 201
Tacoma, WA 98409-7322
In Person: Visit Suite 109
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