GENERAL GEOLOGY

Detailed explanation-1: -A perennial stream is a stream that has continuous flow of surface water throughout the year in at least parts of its catchment during seasons of normal rainfall, as opposed to one whose flow is intermittent.

Detailed explanation-2: -These rivers are fed by glaciers through the melting of snow and perennial rivers also receive heavy rainfall during the rainy season. The perfect example of a perennial river is the Ganga river. Jhelum, Chenab, Beas, Ravi, and Sutlej are other examples of perennial rivers.

Detailed explanation-3: -Permanent rivers, sometimes called perennial rivers, are rivers that have a continuous flow of water throughout the year. This type of river gets water from a range of sources, including snow melt and rainfall.

Detailed explanation-4: -Perennial streams are different to intermittent streams; which normally stop flowing for weeks or months each year. They are also different to ephemeral streams that flow only for hours or days after rainfall. During unusually dry years a perennial stream may stop flowing. In a drought, they may not flow for months.