GENERAL GEOLOGY

Detailed explanation-1: -On the inside bend of the river, known as the point bar, water velocity is slower because it doesn’t have to travel as far as the water on the outside of the bend. This allows sediment to settle out and be deposited. As this cycle of erosion and deposition continues, the river will migrate in it’s river valley.

Detailed explanation-2: -On the inside of the bend, water movement is slower. Material builds up here due to deposition. This makes the bank gently sloping and the river channel shallow.

Detailed explanation-3: -On the outside of the meander, the surface of the water has a tendency to be slightly higher, or super-elevated, because it has gained momentum and acceleration. Here, the flow is forced down the outer bank, which results in a steeper velocity gradient and greater bed shear stresses.

Detailed explanation-4: -In a meandering river, water will tend to flow fastest along the outside bend of a meander, and slowest on the inside bend.

Detailed explanation-5: -Water is pushed to the outside of a bend, and erodes the curve further, while water on the inside is slower and deposits sediment. This is why you often see sand bars and beaches on the inside of the curve. Due to erosion on the outside of a bend and deposition on the inside, the shape of a meander changes over time.