GENERAL GEOLOGY

Detailed explanation-1: -A floodplain (or floodplain) is a generally flat area of land next to a river or stream. It stretches from the banks of the river to the outer edges of the valley. A floodplain consists of two parts. The first is the main channel of the river itself, called the floodway.

Detailed explanation-2: -Flood plains are formed when a meander erodes side ways as it travels down stream. when a river breaks it’s banks, it leaves behind layers of alluvium (silt) These are gradually build up to create the floor of the plain.

Detailed explanation-3: -(iv) How are flood plains formed? Answer: When a river overflows its banks, it results in the flooding of the area surrounding it. When it floods, it deposits a layer of fine soil and other material called sediments, thus forming a fertile layer of soil called flood plains.

Detailed explanation-4: -Flood plains are formed when the meander eroses sideways as it travels downstream. When a river breaks its banks, it leaves behind layers of alluvium (silt) which are gradually being built up to create the floor of the plain.

Detailed explanation-5: -Flood-plains are treeless beds of a river. These are found during the dry season when the river shrinks. It is a treeless bed as every year when it rains heavily, this bed is filled with water allowing no permanent trees or plants to grow here. The river flows amidst it during the dry season.