What is a point bar?

A point bar is accurately defined as an area of deposition that forms on the inside of a meander in a river. As rivers flow, they often create bends or curves known as meanders. The water flows faster on the outside of the bend, causing erosion in that area, while on the inside, the flow is slower, leading to sediment being deposited. This sediment accumulation creates a point bar, which is typically composed of sand and gravel.

Understanding the concept of a point bar is crucial in the study of river dynamics, sediment transport, and geomorphology. It illustrates the interplay between erosion and deposition, highlighting how landscapes are shaped by river processes over time.