Nash Stream Forest is a nearly 40,000-acre (160 km2)[1] protected area in northern New Hampshire in the United States.[2] The state-owned property is located south of Dixville Notch in the towns of Stark, Stratford, and Columbia, and in Odell township. The forest occupies land on either side of Nash Stream, a south-flowing tributary of the Upper Ammonoosuc River and part of the Connecticut River watershed. The forest is bordered to the south by Christine Lake and Kauffmann Forest.