Newfound Lake is a crystal clear Oligotrophic Lake located in Grafton County, New Hampshire, USA, within the towns of Bridgewater, Bristol, Alexandria, and Hebron. At 4,451 acres, it is the 3rd largest lake located entirely in the state of New Hampshire. It is consistently considered one of the top 2 cleanest lakes in New Hampshire--top 5 in the country. When you visit it you can see why. The lake is located in the Lakes Region of New Hampshire. The lake's water is refreshed twice-over annually by underground springs. The lake is about 2 1/2 miles wide and 6 miles (9.7 km) in length and has a maximum depth of 183 feet. Some major tributaries include the Fowler River and the Cockermouth River. Its outlet is the Newfound River, flowing into the Pemigewasset River.
Wellington Beach State Park is located on the lake's west shore in the town of Bristol.