Sebago Lake State Park Town: Naples Address: 11 Park Access Rd, Casco, ME 04055 Phone: Tel: 207-693-6613 Website: http://www.maine.gov/doc/parks/ Open: 1-May-15-Oct Sites: 250 Max RV Length: 35' Facilities: tenting, other swimming, boating, fishing, group area Region: Western Lakes & Mountains For reservations please call 1-800-332-1501 in State and 207-624-9950 out of State