What is a river regime?

What is a river regime?

What is a “river regime”? The regime of a river is the way in which the discharge of the river changes over time or in the course of the year.

What is river regime Class 11?

The pattern of flow of water in a river channel over a year is known as its regime. An area drained by a river and its tributaries is called a drainage basin.

What does a river regime graph show?

These graphs are useful because the show us how variable runoff can be. They also reveal the contributions of water from the ground (as Antecedent or base flow) and from the soil. The graph shows base flows and throughflow which are the contributions made to the river via soil and ground water flows.

What is runoff regime?

The runoff regime is a product of the temporal variation of the water balance in a catchment area and is, therefore, influenced by all the factors that control runoff. There is a long tradition of research dealing with characterisation of rivers using runoff regimes.

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Why do river regimes differ?

A river regime is the difference in the discharge of the river throughout the year. It is dictated by drainage basin and climatic characteristics.

What is regime in geography?

The pattern of the seasonal flow of water in a river is called its regime. The main difference in the flow pattern of the Himalayan and the Peninsular rivers is caused by the climate differences.

What is a river regime a level geography?

A river regime is the annual variation in the discharge or flow of a river at a particular point, and is usually measured in cumecs. The character of a river’s regime is influenced by a number of variable factors: the type of vegetation cover: wetlands can hold water and release it slowly into the river.

What is river regime Upsc?

➢ River Regime: The pattern of flow of water in a river channel over a year is known as its regime. Note: The catchments of large rivers are called river basins while those of small rivulets and rills are often referred to as watersheds. There is, however, a slight difference between a river basin and a watershed.

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What does base flow indicate?

Baseflow (also called drought flow, groundwater recession flow, low flow, low-water flow, low-water discharge and sustained or fair-weather runoff) is the portion of the streamflow that is sustained between precipitation events, fed to streams by delayed pathways.

How do dams affect river regimes?

Meanwhile, regulation of dams for human activities substantially change the river flow regime, such as reducing peak flows during the flooding season and releasing during the dry season [2]. In recent years, abilities of the dams to change natural hydrologic processes have increased in many river basins.

How does climate change affect river regimes?

Climate change will increase the temperatures of rivers and lakes, as well as oceans, with knock-on effects on aquatic life [15], [11]. Greater rainfall intensity could lead to more suspended solids, sediments, and other contaminants entering rivers—leading to more “silting up”.

What is meant by river regime explain the river regime of a Himalayan river and a peninsular river?

regime and himalayan river regime is different because of climate difference. annual rain pattern. Himalayan river are. perennial while peninsular river are ephemeral as himlayan rivers are fed by. rain as well as glaciers.Therefore Himalayn rivers like Ganga and Yamuna have maximum flow during august and minimum.

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What is river regime in geography?

River regime. River regime can describe one of two characteristics of a reach of an alluvial river : The variability in its discharge throughout the course of a year in response to precipitation, temperature, evapotranspiration and drainage basin characteristics (Beckinsale, 1969) A series of characteristic power-law relationships between…

What is the relationship between river surface runoff and river regime?

Surface runoff not only depends on the volume of water but also the nature of the gradient. Further, River regime regulates the discharge of a river. River Regime can describe one of two characteristics of a reach of an alluvial river.

What is the difference between simple regime and glacial regime?

Simple regime is where all rivers have one peak discharge per year The glacial regime is characterised by: It is found at high altitudes, above 2,500 metres (8,200 ft). Example: Rhône at Brigue . The nival regime is similar to the glacial, but attenuated and the maximum takes place earlier, in June.

What are the characteristics of pluvial regime?

The pluvial regime is characterized by: It is typical of rivers at low to moderate altitude (500 to 1,000 metres or 1,600 to 3,300 feet). Example: Seine .