Furnace Pond is a 115-acre great pond with an average depth of 5 feet and a maximum depth of 9 feet. Furnace Pond receives water from Oldham Pond and cranberry bogs and drains into Herring Brook and eventually into the North River. The bottom is composed primarily of mud, and aquatic vegetation is extremely abundant. Most of the 2.7 miles of shoreline are developed with year-round houses. Furnace Pond is extremely fertile and is subject to nuisance algae blooms during the summer. The pond is used as a secondary water supply for the City of Brockton as water is pumped from the pond during the winter months into Silver Lake.

The pond is readily accessible from MA-14, about 1.3 miles west of Pembroke center. Roadside parking is available along Mattakeesett Street (MA-14) and canoes and small boats can be launched.