The general lowering of the streambed by erosive processes, such as scouring by flowing water. The removal of channel bed materials and downcutting of natural stream channels. Such erosion may initiate degradation of tributary channels, causing damage similar to that due to gully erosion and valley trenching.
DEGRADATION (RIVER BEDS OR STREAM CHANNELS)
Meaning of DEGRADATION (RIVER BEDS OR STREAM CHANNELS) in English
Environmental engineering English vocabulary. Английский словарь экологического инжиниринга. 2012