- 2062 Baisakh (old course) · 2 marks
Short note: Ox-bow lake
Short answer
An ox-bow lake is a crescent-shaped lake formed when a meander loop is cut off from the main stream. During a flood, the river cuts through the narrow neck of the loop; deposits seal the ends, leaving a lake.
Write a short note on ox-bow lake.
An ox-bow lake is a crescent-shaped lake formed when a meander loop of a river is cut off from the main stream.
- In the old stage, a meander bends more and more as the outer bank is eroded and deposits build up on the inner bank.
- During a flood, the river cuts through the narrow neck of the loop (neck cut-off).
- Deposits seal the ends of the abandoned loop, leaving a lake.
____ ____
/ \ / \
( loop ) -> river (ox-bow)
\____/ cut-off
It slowly fills with silt and becomes a swamp or meander scar. In the Terai, such areas have soft, wet soil.
✓ Answer checked by Claude Opus 5.5 (high effort)