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 DK Net Design Gilford, NH Other Attractions Silver Sands Motel & Marina Gilford, NH Businesses Windhill Design Gilford, NH Other Attractions Cherrystone Lobster House Gilford, NH Other Attractions