Role of Rivers

Dams store river water and can release it in a controlled way. In exams link dams with irrigation and hydropower.

Polluted water affects both fish and human use. In exams write pollution control under river conservation.

A river cuts rocks and soil through its flow. In exams connect erosion with valley formation.

Navigation needs river depth and continuity of water. In exams consider water transport as a use of rivers.

Alluvial soil contains nutrients so fields become fertile. In exams link river plains with agricultural regions.

A water divide forms the boundary between different river basins. In exams remember it as the boundary of a drainage basin.

Rivers move surface water forward and keep the water cycle active. In exams treat rivers as the flowing link of the water cycle.

During floods heavier particles deposit quickly near river banks and form levees. In exams link natural levees with flood deposition.

In the middle course a river cuts banks and also deposits some material. In exams link the middle course with meanders.

A river cuts the land carries material and deposits it. In exams write these three actions in order.

River plains are flat and fertile so economic activities grow. In exams link river plains with agriculture and settlements.

Silt deposition can reduce the carrying capacity of a river. In exams link siltation with flood risk.

When slope decreases flow energy reduces so deposition increases. In exams remember the relation among slope velocity and deposition.

Tributaries make the river system wider. In exams connect the term tributary with the main river.

Fish plants and many organisms live in river systems. In exams understand a river also as an ecosystem.

For a delta the sediment carried by a river must be deposited at the mouth. In exams study river mouth and deposition together.

The northern plains are fertile areas formed by river alluvial deposits. In exams keep the Ganga-Brahmaputra plain as an example.

Floods can cause damage but also deposit silt and make fields fertile. In exams write both benefits and harms of floods.

Rivers provide resources needed for life and agriculture. In exams remember the role of rivers in population distribution.

Energy of flowing or falling water can rotate turbines. In exams link hydropower with the energy use of rivers.