The Erie PA Hydrology mapping will consist of the following:
1. Island – land areas within rivers and water bodies.
2. Marsh_Swamp – marshes, swamps and areas of intermittent water.
3. River_Poly – double line streams that are wider than 8 feet wide.
4. Streams – single line stream less than 8 feet wide.
5. Waterbody – a quarter acre ponds larger than 200 sq. ft. within 200 feet. of the bluff line and half an acre beyond 200 feet.