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.
open-channel flows are rivers, tidal currents, irrigation canals, or sheets of. water running across the ground surface after a rain. 2 In both closed conduits and open channels, the shape and area of. the cross section of the flow can change along the stream; such flows are. said to be nonuniform. Flows are those that do not change in geometry or. flow characteristics from cross section to cross section are said to be. uniform.