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There are two primary mechanisms of stream bank erosion: fluvial erosion and mass failure. Fluvial erosion is the direct removal of soil particles by flowing water. The rate of fluvial erosion is determined both by the force of the flowing water (e.g. faster flow equals more force) and the resistance of the bank material to erosion (e.g. clay is generally more resistant to erosion than sand).
Date/Time Thumbnail Dimensions User Comment; current: 09:01, 28 March 2017: 1,600 × 1,040 (351 KB): BacLuong: Bank Erosion at Song Tien, a branch of Mekong, in Binh Dai district, Ben Tre province, Vietnam, 2002.
River bank erosion along the Ganges in Malda and Murshidabad districts focusses on river bank erosion along the main channel of the Ganges in Malda and Mushidabad districts of West Bengal, India. Overview The Ganges is a long river carrying a huge discharge of 70,000 m 3 /s. However, the river bank erosion problems are restricted to a few places. Floods and erosion pose a serious problem in ...
Bank erosion is the wearing away of the banks of a stream or river. This is distinguished from changes on the bed of the watercourse, which is referred to as scour. Erosion and changes in the form of river banks may be measured by inserting metal rods into the bank and marking the position of the bank surface along the rods at different times. [17]
A river bank can be divided into three zones: Toe zone, bank zone, and overbank area. The toe zone is the area which is most susceptible to erosion. [2] Because it is located in between the ordinary water level and the low water level, it is strongly affected by currents and erosional events. [2]
A cut bank, also known as a river cliff or river-cut cliff, is the outside bank of a curve in a water channel , which is continually undergoing erosion. [1] Cut banks are found in abundance along mature or meandering streams, they are located opposite the slip-off slope on the inside of the stream meander.
The concave bank is often a cut bank and an area of erosion. The eroded material is swept and rolled across the floor of the stream by the secondary flow and may be deposited on the point bar only a small distance downstream from its original location in the concave bank. The point bar typically has a gently sloping floor with shallow water.
Bank erosion is the wearing away of the banks of a stream or river. This is distinguished from changes on the bed of the watercourse, which is referred to as scour. Erosion and changes in the form of river banks may be measured by inserting metal rods into the bank and marking the position of the bank surface along the rods at different times. [23]