Perennial rivers and lakes are those which bear water throughout the year while seasonal rivers and lakes have water only during a particular period, ie rainy season.
Perennial rivers and lakes are those which bear water throughout the year while seasonal rivers and lakes have water only during a particular period, i.e. rainy season. Seasonal streams flow during certain times of the year when smaller upstream waters are flowing and when groundwater provides enough water for stream flow. Runoff from rainfall or other precipitation supplements the flow of seasonal stream.
Perennial rivers and lakes have non-stop water flow due to the source point from which the water is being generated naturally.
Apartfrom rainfall, there are many environmental influencing factors which supports the perennial rivers and lakes have continuous water flow throughout the year.
Topography of the land matters to have yearly water output in the rivers and lakes.
Seasonal streams have the probability of getting enough water due to the runn off rainfall and other environmental factors.
Seasonal streams flow during certain times of the year when smaller upstream waters are flowing and when groundwater provides enough water for stream flow. Runoff from rainfall or other precipitation supplements the flow of seasonal stream. Permanent lakes refer to those lakes which have been formed due to melting of glaciers or because of some perennial flowing river. These types of usually comprise of fresh water. Seasonal lakes refer to those lakes which are formed during the rainy season. An intermittent river, or intermittent stream, is any river or stream those only flows during certain times of the year, and may not have any flowing surface water during the dry season. Perennial rivers and lakes are those which bear water throughout the year while seasonal rivers and lakes have water only during a particular period, i.e. rainy season. They only flow during the rainy season because they are dependent on rainfall for their water flow. They can be found in arid regions where evaporation is more common than precipitation. Narmada, Tapti, Krishna, Kaveri, Godavari, and Mahanadi are a few notable non-perennial rivers. In perennial rivers, water remains available throughout the year, while non-perennial rivers are rain fed rivers in which water flows mostly during the rainfall period only. A stream or a river that flows continuously through its river bed for a year is known as a perennial river. They have water in their river bed for the whole year. Examples of perennial rivers are, the Brahmaputra, Ganges, Indus, etc.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. In Northern plains of India perennial rivers are very much useful for agriculture because they provide water throughout the year. Perennial rivers flow continuously throughout the year irrespective of seasons. Mostly they originate from the mountain and water is fed by melting of glaciers. These river get water by rain in rainy season, melting of ice in summer and by snow in winter. Himalayan rivers have abundant water because rivers rising in this area are perennial in nature. They are either fed by the glaciers from the mountains or by the heavy rainfall.
Supplementing prior responses above, ephemeral lakes and rivers are prevalent in arid regions, whereas the lakes and rivers in humid/wet regions are generally perennial.
? I wonder if there are exceptions to perennial flow in wet karst regions where the subsurface has high permeability, and most of the watershed drainage may flow below ground surface for long distances?
- Badges
- Science topic
- Similar topics
- Correction