Below is a selection of links that may be of interest to you.

Lake Wentworth Association - Dedicated to preserving and protecting the Lake Wentworth area in New Hampshire.

Green Mountain Conservation Group -  Dedicated to preserving the Ossipee Watershed, the largest stratified drift aquifer in New Hampshire.

NH Natural Heritage Bureau - State agency that finds, tracks, and facilitates the protection of New Hampshire's rare plants and exemplary natural communities.