National Wetland Inventory (NWI) with revisions made by local governments in the tri-county region. Portland wetlands are updated from the original Metro dataset by City of Portland, Bureau of Planning & Sustainability to refine geometry, remove erroneously mapped wetlands, and add missing wetlands. This data can be viewed online at www.PortlandMaps.com.
-- Additional Information:
Purpose: For identifying the location of wetlands.
Update Frequency: As Needed
-- Metadata Link: