OneStop Data Mapper


Welcome to the new NHDES OneStop Data Mapper, a viewer displaying OneStop data in an interactive map format. The mapper replaces the NHDES OneStop Web Geographic Information System (GIS). The Onestop Data Mapper is maintained by NHDES and NH GRANIT.

New Features Helpful Links
  • User-friendly design
  • Ability to bookmark locations
  • Download GIS data

Access to Data

Most OneStop GIS data is publicly available for viewing and download in the OneStop Data Mapper, except for secure water supply data. Users interested in viewing secure data in the mapper or receiving GIS files must register at the OneStop Data Retrieval/Data Provider Registration Form.  Users already approved may login by clicking the icon below.

Secure Water Supply Data:

  • Groundwater Classification Areas GAA
  • Public Water Supply Wells
  • Registered Water Users
  • Source Water Protection Areas
  • Wellhead Protection Areas
  • Water Supply Intake Protection Areas
  • Water Well Inventory
Start NHDES OneStop Data Mapper
Phone: (603)271-2972

New Hampshire Department of Environmental Services | PO Box 95 | 29 Hazen Drive | Concord, NH  03302-0095
603.271.3503 | TDD Access: Relay NH 1.800.735.2964 | Hours: M-F, 8am-4pm

copyright 2008. State of New Hampshire

The Department of Environmental Services is dedicated to making more environmental information more readily available to more people while maintaining user confidence in the information. The information is the best available according to the procedures and standards of each of the contributing programs and of this system. The different programs are regularly maintaining the information in their databases, and the system is periodically being modified to respond to user needs. As a result, the system may not always provide access to all existing information, and it may occasionally contain unintentional inaccuracies. The Department has made every effort to present the information in a clear and understandable way for a variety of users. We can not be responsible, however, for the misuse or misinterpretation of the information presented by this system.