National Wildlife Refuges
- Oxbow NWR: Great for canoeing on the calm Nashua River. Minimally maintained, unstaffed, confusing directions. It has a northern part and a southern part, divided by R. 2. These two parts are not connected. by any trails.
- Parker River NWR: Well maintained, staffed, easy to access all trails, good facilities, convenient parking lots, excellent for birding.