ABSTRACT

Erosion and sedimentation encompass processes for detachment, entrainment, transport, and deposition of particles. The unmanaged erosion of soil and associated contaminants from upland sources, their redistribution across the land surface and transport by stream networks can have adverse water quality and ecological impacts. In addition to decreasing the productivity of croplands and impacts in other upland areas caused by erosion, sediment deposition in receiving waters can impair conveyance in stream channels and irrigation canals and reduce the storage capacity of reservoirs. Redistribution of sediment drives long-term landscape evolution which, in turn, affects the hydrological processes acting within and over individual hillslopes (Brooks and McDonnell, 2000).