Ellacoya State Park Ellacoya State Park is located in Gilford on the southwest shore of Lake Winnipesaukee, New Hampshire's largest lake. The 600 Gilford, NH State Parks William H. Seed, broker Gilford, NH Other Attractions Gunstock Mountain Resort and Recreation Area Gilford, NH Businesses Heirlooms & Old Lace Gilford, NH Other Attractions DK Net Design Gilford, NH Other Attractions