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 Town of Gilford Gilford, NH Other Attractions Adventures in Advertising Gilford, NH Other Attractions Airport Country Store & Deli Gilford, NH Other Attractions Four Stroke Marine Gilford, NH Other Attractions