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.
Movement of Water. Surface movement includes rivers, streams, creeks, lakes, ponds, and human-made flood control. All surface water is trying to reach sea level due to gravity. As water flows in channels, the streambed and banks of the channel will resist the flow of water. The velocity of the water is dependant on steepness of the slope, type of rock or soil, amount of vegetation, shape of stream bed, and obstructions.