What is the effect of river bank erosion?

6 Impact of River Bank Erosion. Impacts of river bank erosion are multifarious: social, economic, health, education and sometimes political. The first and foremost impact is social, i.e., homelessness due to land erosion which compels people to migrate (Figure 8).

What do you mean by bank erosion of a river?

lateral erosion refers to the widening of a stream channel or valley lateral erosion in the river is the erosion of the river banks basically the river destroys it’s bank by mechanical force,usually during the high water levels and the floods.

Which causes erosion along a riverbank?

Flood is the most crucial reason of river bank erosion. The chances of flood increases in the rainy season. During flood the huge amount of water flow with higher velocity brings enough energy to tear away the top layers of soil or even causes mass failure. This downward velocity against the bank is the erosive force.

Which areas suffer from river bank erosion?

According to the Bangladesh Water Development Board (BWDB) the most erosion prone districts are Bogra, Sirajganj, Kurigram, Lalmonirhat, Gaibandha and Rangpur, in the country’s north, and Chandpur, Manikganj, Rajbari Shariatpur, and Faridpur in Dhaka zone, with Tangail and Jamalpur in Mymensingh zone, and the coastal …

What causes erosion on the banks of a river?

River bank erosion occurs when water wears away at the banks of a river or stream. While river erosion is a naturally occurring process, human impact can increase its rate. Common contributing factors to river and stream bank erosion include: Clearing vegetation away from the river bank. Flooding. Intense rainfall.

What can I put on my river bank to prevent erosion?

Coir logs are another river bank erosion repair method made using coconut fiber. Coir logs are large in diameter, which makes them ideal for supporting river banks or being used for erosion control on hills, shorelines, and other areas prone to erosion. Even though they’re big, coir logs are easy to place.

How are bank erosion and river channel migration measured?

This measures the erosion rate in addition to changes in the geometry of stream banks. Aerial and satellite imagery can be used to measure rates of bank erosion and river channel migration at larger spatial scales by comparing bank locations at various times.

Where is the bank erosion in West Bengal?

Another study area was the Shantipur Block in the Nadia District of West Bengal. This place is more than 211 km downstream of Farakka Barrage, and is situated at the left bank of the river Bhagirathi-Hooghly (one branch of River Ganges). The river here resorts to massive bank erosion.