Hinkleys Pond, also known as Pleasant Lake, is a 171-acre natural kettle hole pond, with an average depth of 12 feet and a maximum depth of 28 feet. Transparency is poor to fair, extending to roughly 6 feet. The bottom is composed of sand, gravel, and some rubble and there is scattered aquatic vegetation. The pond is fed by groundwater and connections to Seymour Pond, Long Pond, and cranberry bogs and drains into the Herring River. The 1.7 miles of shoreline are developed with residential homes, cranberry bogs, and a beach.

Hinkleys Pond is located in the northern section of Harwich, a half-mile north of the center; a half-mile northwest of the US-6 and MA-124 interchange. It can be reached by taking Exit 10 from US-6 and heading north on MA-124. The Harwich Town Beach is located just west of MA-124. Access to the pond is from a dirt road on the western side of the pond, south of a cranberry bog.