NH Method
The Method for Inventorying and Evaluating Freshwater Wetlands in New Hampshire (NH Method)
Provides communities, conservation groups and professionals a practical method for evaluating wetland functions.
Originally published in 1991, the NH Method was first revised in 2011, with the most recent update in 201
The Method for Inventorying and Evaluating Freshwater Wetlands in New Hampshire (NH Method) provides a wetland evaluation method for use by public officials and community volunteers, professionals with some familiarity with wetlands,
but who are not wetland specialists, and professional wetland scientists.


NH Wetlands Mapper
An online mapping tool designed as a companion to the NH Method.
NOTE: The NH Wetlands Mapper is not currently available. We are moving the wetland mapping tools to the GRANITView online mapper, and anticipate this functionality will be available by early summer, 2022.