Moosehorn Wilderness Area is located near the Canada/US border in northeast Maine. The wilderness is approximately 130 miles northeast of Augusta, Maine and 60 miles west of St. John, New Brunswick, Canada. The wilderness is divided into two parts; the 4,719 acre Baring Division and the 2,782 acre Edmunds Division to the south. The wilderness area consists of streams, lakes, forests, shorelines, bogs and marshes. The IMPROVE site is located in a small cleared area surrounded by forests near McConvey Road, about 1 mi northeast of refuge headquarters at the Baring Division. The nearest highway is US Highway 1, 1.8 miles to the west. The IMPROVE site is located at an elevation of 78 m MSL. There is a visibility camera that looks out toward the northwest within close proximity of the IMPROVE site.