Wetland mapping resources

We are committed to providing public access to wetland maps and geospatial data.

Now available: Results of statewide wetland mapping inventory project

Locations of existing and ongoing wetland mapping projects in Washington. 

The statewide interagency workgroup that developed the Washington Wetland Program Plan identified the following objectives related to wetland maps and geospatial data: 

  • Improve wetland mapping through implementation of phased mapping efforts.
  • Develop a web-based mapping system for permit activities.
  • Inventory wetland status and trends.
  • Integrate wetland data with web-based data management platforms.
  • Provide local governments access to mapping tools.

To help address these objectives, we received support from several grants funded by the Environmental Protection Agency (EPA). For example, in 2022 and 2023 we were focused on an EPA-funded grant to conduct a statewide wetland mapping inventory project.

Below you will find information about other past and current wetland-mapping efforts, as well as links to available wetland map products and geospatial data.