|Newfound Lake is located in Grafton County, New Hampshire, USA, within the towns of Bridgewater, Bristol, Alexandria, and Hebron. The lake is located in a section of New Hampshire known as the Lakes Region. At 4,451 acres, it is the third-largest lake located entirely in New Hampshire. The lake's water is refreshed twice-over annually by underground springs.
The lake is about 2½ miles wide and 6 miles (9.7 km) long and has a maximum depth of 183 feet (56 m). Major tributaries include the Fowler River and the Cockermouth River. Its outlet is the Newfound River, flowing into the Pemigewasset River.