The US FWS provides users with access to wetland inventory data online via their Wtlands Mapper web service, an ArcGIS.com service.

From the FWS... The U.S. Fish and Wildlife Service (Service) is the principal Federal agency that provides information to the public on the extent and status of the Nation's wetlands. The Service's strategic plan for our vast national wetland data holdings is focused on the development, updating, and dissemination of wetlands data and information to Service resource managers and the public. The development of the Wetlands Master Geodatabase is in direct response to the need to integrate digital map data with other resource information to produce timely and relevant managment and decision sup port tools.

For more information visit:   http://www.fws.gov/wetlands/

Data available as REST services at:

• Wetlands Mapper Documentation and Instructions Manual (PDF)
• Frequently Asked Questions: Wetlands Mapper (PDF)
• Frequently Asked Questions web page
• Printing maps with the Wetlands Mapper (PDF)
• Mapper Introduction