Active, public and private, recreational uses and activities, such as: parks, camps, picnic areas, golf courses, fishing, wildlife and nature preserves, boating clubs. Piers, docks, floats, or open shelters usually found in developed outdoor recreation areas are permitted when accessory to such uses. No enclosed structures, or structures that will interfere with the flow of flood waters, are permitted. Toilet facilities are permitted when connected to public water and sewage systems.