How big is Lake Winnipesaukee?

Lake Winnipesaukee, located in the Lakes Region of central New Hampshire, is the largest lake in the state and one of the most iconic freshwater bodies in New England. Renowned for its crystal-clear waters, beautiful islands, and scenic mountain backdrop, Lake Winnipesaukee is not only vast in surface area but also rich in history and ecological diversity. But just how big is Lake Winnipesaukee?

Surface Area and Dimensions

Lake Winnipesaukee covers an impressive 71 square miles (184 square kilometers) of surface area, making it the sixth-largest natural lake that lies entirely within the United States' borders. To put that into perspective, it’s more than twice the size of Manhattan Island. The lake stretches approximately 21 miles (34 kilometers) from its western tip near Weirs Beach to its eastern end at Alton Bay, while its widest point measures about 9 miles (14 kilometers) from north to south.

Shoreline and Islands

The shoreline of Lake Winnipesaukee is remarkably intricate, measuring roughly 288 miles (463 kilometers) in total length. This winding shoreline encompasses numerous coves, bays, and inlets, providing secluded spots for boating, swimming, and fishing. Along this expansive shore lie several towns, including Laconia, Meredith, Alton, Wolfeboro, Gilford, and Center Harbor.

The lake is also famous for its many islands—estimates range from 258 to 274 islands, depending on how one defines an island (some are mere rocks that protrude above the waterline). The largest island is Long Island, covering about 1,186 acres (4.8 square kilometers), while many others are small, privately owned, or undeveloped.

Depth and Volume

In terms of depth, Lake Winnipesaukee reaches a maximum depth of approximately 212 feet (65 meters) near Rattlesnake Island. Its average depth is closer to 43 feet (13 meters). These depths contribute to a substantial water volume of about 625 billion gallons (2.36 cubic kilometers), sustaining a vibrant ecosystem and serving as a recreational haven for fishing and boating enthusiasts.

Elevation and Watershed

Lake Winnipesaukee sits at an elevation of 504 feet (154 meters) above sea level. It forms part of the Merrimack River watershed, draining southward via the Winnipesaukee River into the Merrimack River and ultimately into the Atlantic Ocean. The lake’s watershed covers about 488 square miles (1,264 square kilometers), highlighting its importance in regional hydrology.

How Does It Compare to Other Lakes?

Although large by New Hampshire standards, Lake Winnipesaukee is modest in comparison to some of North America’s largest lakes like the Great Lakes. Nevertheless, it is the largest lake in New Hampshire and one of the largest lakes in New England, surpassing others like Lake Champlain (which extends into New York and Vermont) only in being entirely contained within one state.

Conclusion

Lake Winnipesaukee is truly a giant among New England’s lakes, covering 71 square miles, boasting nearly 300 miles of shoreline, and dotted with over 250 islands. Its size, combined with its natural beauty and recreational opportunities, has made it a beloved destination for generations. Whether you’re navigating its vast waters by boat, relaxing on a lakeside dock, or exploring its many islands, the sheer scale of Lake Winnipesaukee offers endless opportunities for adventure and discovery.