This is probably your best place to start when seeking information. Usually found at your county courthouse, these folks will provide you with information regarding local permits which may be needed for your project. This requires constant development and disturbance of available land. The greater the population, the greater the demand for clean water. Clean water is required for fish life to survive.
Clean water is required for mankind to survive.
Silt and sediments are pollutants which destroy fish life. They are carried downstream - only to deposit elsewhere in the watershed to cause a downstream threat to life and property thru increased flooding, and can affect international shipping by clogging shipping channels. However, because this plant is not present does not mean the area is not a wetland. Before a lake or pond may be drained or drawndown or treated with chemicals - the proper permits must first be secured from the PA Fish and Boat Commission. It is unlawful to disturb any waterway or watershed in any manner which might cause damage to fish - without required permits.