Pleasant Lake, 479 acres is located in the town of Deerfield. The lake's eastern shore forms the boundary between Deerfield and the town of Northwood. Water from Pleasant Lake flows north to Northwood Lake, then west via the Little Suncook River to the Suncook River, a tributary of the Merrimack River. 

There is access at the boat ramp on Gulf Road at the north end of the lake.