A barrier constructed of earth or man-made materials to hold back the flow of a river.
Dams are generally for storage or diversion.
Dea dheads See Large Woody Debris . Deadman A log or block of concrete buried in a stream bank that is used as an anchor for a revetment or other structure. Deb ris Includes gravel , cobble, rubble, and boulder-sized sediments as well as trees and other organic detritus scattered about by either natural processes or human influences. Debris Dams Detention dams constructed to trap sediment. The quantity of debris located within a specific reach of stream channel, due to natural processes or human activities.