Ridley Park is a borough in Delaware County, Pennsylvania, United States. The population was 7,002 at the 2010 census. Ridley Park is the home of The Boeing Company's CH-47 Chinook helicopter division.[4]
10. Contaminated surface water can eventually enter groundwater and contaminate it. 11. Depending on the type of soil or rock, groundwater will flow at different rates. 12. Rain and snowmelt infiltrate (seep) into the ground to become groundwater. 1. False.
Within a stream channel, three types flow can be observed: 1  Laminar flow-water flow in the stream is not altered in its direction. 2  Turbulent flow-water flows as discrete eddies and vortices. 3  Helical flow-spiral flow in a stream.