Geographic Information Systems photo identifier

Geographic Information Systems (GIS)

State, County, and Watershed Maps for Washington State

Ecology conducts projects that use Geographic Information System (GIS) produced maps as aids in accomplishing its mission. The agency builds and maintains GIS maps in order to help our staff and the public understand the diverse natural and cultural environment we live and work in. As a public service, we are making some of our maps available for download here.

Map Theme
Map Region
Map Link

Counties, WRIAs, and Ecology Administrative Regions

Tribes and Tribal reservations

Tribal reservations and treaty ceded areas

Level 4/8 Hydrologic Unit Code (HUC) Boundaries

Puget Sound Watershed Characterization
Puget Sound

Flood Hazard Area maps: These are now available in the Washington Coastal Atlas. Go to the flood hazard map page for the interactive map showing the most current data available. There you can zoom to your area of interest and print a custom map.

Salmonid Stock Inventory (SaSI) Maps: See some WDFW map resources here.

Map Information:

  • All of our maps are designed to be printed on 8½ x 11 inch (216 × 279 mm) media.
  • Maps can be printed on 11 x 14 inch (279 × 356 mm) media without loss of resolution.
  • All maps are available in PDF format, other formats such as JPG and EPS, are available by request.
  • All  maps are covered by Ecology Copyright.
  • All maps are produced from Statewide GIS data from the sources listed below.
  • There are NO individual County or WRIA GIS data layers available.
  • To view the maps in PDF format, your computer needs to have Adobe Acrobat installed.
  • The Adobe Acrobat Reader is free and available by clicking on the icon below:

    If you are unfamiliar with using Adobe Acrobat, we have some tips on using Adobe Acrobat Reader with our maps.

Data Sources:

To obtain the digital GIS data, please click on the links below to go to the source website or organization:

Search other agencies:


Have questions about Ecology's maps? Contact:

Adam Oestreich, GIS Analyst and Cartographer
Washington State Department of Ecology
P.O. Box 47600
Olympia, Washington 98504-7600
Phone: (360) 407-6418

Page last updated on Monday, October 10, 2016 15:57