NH Department of Environmental Services
- Biomonitoring Program
- Dam Removal & River Restoration Program
- Rivers Management & Protection Program
- Shoreland Protection Program
- Volunteer Lake Assessment Program
- Water Education for Teachers
- Water Quality Standards
- Watershed Assistance
Local River Management Advisory Committees
- Cold River Local Advisory Committee
- Connecticut River Joint Commission
- Exeter River Local Advisory Committee
- Hodgson Brook Local Advisory Committee
- Lamprey River Advisory Committee
- Lower Merrimack River Local Advisory Committee
- Souhegan River Local Advisory Committee
- Upper Merrimack River Local Advisory Committee
Local Watershed Associations
- Baker River Watershed Association
- Bellamy and Oyster River Watershed Protection Partnership
- Connecticut River Watershed Council
- Lake Winnipesaukee Watershed Association
- Merrimack River Watershed Coucil
- Nashua River Watershed Association
Regional Planning Commissions
- Central New Hampshire Regional Planning Commission
- Lakes Region Planning Commission
- Nashua Regional Planning Commission
- North Country Council
- Rockingham Planning Commission
- Southern New Hampshire Regional Planning Commission
- Southwest Regional Planning Commission
- Strafford Regional Planning Commission
- Upper Valley Lake Sunapee Regional Planning Commission
State Organizations
Regional Organizations
National Organizations
Other Organizations
- Plymouth State University Center for the Environment
- University of New Hampshire Center for Freshwater Biology