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 Lakes Region Kennel Club NH nonprofit 501c(4) Gilford, NH Other Attractions William H. Seed, broker Gilford, NH Other Attractions Victorian House Gilford, NH Other Attractions Inn at Smith Cove Gilford, NH Businesses