https://www.nhgeodata.unh.edu/datasets/two-foot-topographic-contours-tannery-brook-merrimack-river-0107000601-smoothed
Two Foot Topographic Contours - Tannery Brook-Merrimack River (0107000601) - smoothed
These contours connect points of equal elevation at 2-foot intervals, and are one of a suite of topographic datasets available from NH GRANIT that convey the...
merrimack rivertwofoottopographiccontours