Wetlands in Cowlitz County, Washington

Cowlitz County, Washington has 52,650 acres wetland mapped. The map below shows every mapped feature inside the county boundary.

Cowlitz County, Washington at a glance

Wetland mapped52,650 acres
Distinct wetlands mapped23,823
Share of the county that is wetland7.1%
Most common wetland typeRiverine (20,067)
Distinct wetland types5
Largest single wetland7,337 acres (Riverine)

Cowlitz County, Washington is home to 114,885 residents. Land Owl's national wetlands layer records the following within the county boundary — Wetland mapped: 52,650 acres. Distinct wetlands mapped: 23,823. Share of the county that is wetland: 7.1%. Most common wetland type: Riverine (20,067). Distinct wetland types: 5. Largest single wetland: 7,337 acres (Riverine). Every feature shown on the map above is clickable, and the figures on this page are derived from the same data the map renders, so they always agree. A free Land Owl account adds parcel boundaries, ownership records, flood zones, soils, wetlands and topography over the same view.

Frequently asked questions

How many wetlands are there in Cowlitz County, Washington?
Land Owl maps 52,650 acres wetland mapped within Cowlitz County, Washington.
Is this wetlands map free to use?
Yes. This map is free to view. A free Land Owl account unlocks the other data layers, parcel boundaries and ownership records.
Where does this data come from?
Land Owl maps wetlands from the U.S. Fish & Wildlife Service National Wetlands Inventory (NWI). NWI-mapped wetlands are a screening tool, not a jurisdictional delineation — confirm any boundary with a qualified delineator before you rely on it.

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