Daniel H Walters

Dan is the National Map Liaison for Massachusetts, Maine, Rhode Island, New Hampshire, Connecticut and Vermont.  


History & Highlights

Dan is The National Map Liaison to Maine, Massachusetts and Rhode Island, New Hampshire, Connecticut and Vermont. Prior to employment with USGS, he worked for the State of Maine where he served as Director of Enterprise Applications from 2004 to 2007 and GIS Administrator from 1990 to 2004. He started his geospatial career at the University of Rhode Island in 1988 as a project manager for the implementation of RIGIS. Dan has been board member and chair of the Maine GIS User Group, chair of the GeoLibrary Geospatial Data Committee and was the federal representative on the GeoLibrary Board.


Dan has undergraduate degrees in Forest Science and Agronomy from Penn State University and received an MS degree in Resource Chemistry and BS in Civil Engineering from the University of Rhode Island.

Areas of Expertise

In this capacity with USGS, he has facilitated USGS partnerships that support a myriad of local, state, private, nonprofit and federal activities through the acquisition of orthoimagery and LiDAR, and the maintenance and expansion of important national databases for structures, geographic names and hydrography.


Specialties include a broad array of activities associated with the development and maintenance of the National Spatial Data Infrastructure with special emphasis on elevation and hydrography.