Lake Pattagansett in East Lyme, CT. Pattagansett Lake is a 124 acre, trophy-bass lake with all types of motorized access permitted. We offer the BEST rates and are close to many attractions! The Island Campground offers seasonal RV site rentals, waterfront cottage apartments (long-term rental) and park model rental. We do not offer tent site rentals. NO OVERNIGHT, WEEKEND, OR WEEKLY RENTALS. Come and see for yourself!