Ch 03 - Drainage System11th India Physical Environment
Drainage Basin vs. Watershed
What is the functional difference between a drainage basin and a watershed?
What is the functional difference between a drainage basin and a watershed?
- Drainage Basin: The total geographic area drained by a river system, including its main stream and all tributaries. This term typically refers to large river systems.
- Watershed: The boundary line or ridge that separates two adjacent drainage basins. This term is also used to describe the smaller catchment areas of rivulets and rills.
- Management: In planning, both are viewed as regional units where environmental activity in one part impacts the entire system.
Prism Memory Hook
Basin holds the large water Watershed sheds and divides the water
Dendritic Drainage Pattern
What structural characteristics define a dendritic drainage pattern and where is it observed in India?
What structural characteristics define a dendritic drainage pattern and where is it observed in India?
A dendritic pattern is characterized by a river network that branches out like the veins of a leaf or the limbs of a tree. It develops in regions where the river channels follow the natural, gentle slope of the terrain. The river system of the Northern Plains is a classic example of this pattern.
Prism Memory Hook
Dendritic comes from the Greek word for tree
Radial Drainage Pattern
Describe the flow structure of a radial drainage pattern and provide a prominent Indian example.
Describe the flow structure of a radial drainage pattern and provide a prominent Indian example.
In a radial drainage pattern, rivers originate from a single central elevated point—such as a mountain peak, hill, or dome—and flow outward in all directions like the spokes of a wheel. A prominent Indian example is the Amarkantak range, which serves as the central point for the Narmada and Son rivers.
Prism Memory Hook
Radial radiates outward like sun rays
Also in this chapter
62 more cards to study in Prism
- 4Trellis Drainage Pattern
- 5Antecedent vs. Superimposed Drainage
- 6Drainage Discharge Orientation
- 7Classification of Drainage Basins by Catchment Area
- 8Indo-Brahma River Theory
- 9Dismemberment of the Indo-Brahma River
- 10Origin: Himalayan vs. Peninsular Rivers
- 11Flow Regime: Himalayan vs. Peninsular Rivers
- 12Drainage Type: Himalayan vs. Peninsular Rivers
- 13River Course: Himalayan vs. Peninsular Rivers
- 14Geological Age: Himalayan vs. Peninsular Rivers
- 15Origin of the Indus River
- 16Indus River Path in India
- 17The Jhelum River
- 18The Chenab River
- 19Ravi and Beas Origins
- 20The Satluj River
- 21The Panchnad System
- 22The Origin of the Ganga
- 23The Panch Prayag Confluences
- 24The Yamuna River
- 25Chambal River Badlands
- 26The Gandak River
- 27The Kosi River
- 28Son and Damodar Tributaries
- 29Pillars of Namami Gange
- 30Namami Gange Programme
- 31NRCP History
- 32Ganga Bifurcation at Farakka
- 33Origin of the Brahmaputra
- 34Brahmaputra's Entry
- 35Tributaries of the Brahmaputra
- 36Rivers of Goa
- 37Majuli Island
- 38Jog Falls River
- 39Bharathapuzha vs. Periyar
- 40Evolution of Peninsular Drainage
- 41Small East Flowing Rivers
- 42Mahanadi River
- 43Godavari River
- 44Godavari Tributaries
- 45Krishna River
- 46Kaveri's Unique Rainfall Regime
- 47Kaveri River
- 48River Regime
- 49Narmada River
- 50Narmada River Regime
- 51Tapi River
- 52Sardar Sarovar Project
- 53Luni River System
- 54Interlinking of Rivers
- 55West-Flowing Rivers of Gujarat
- 56Measurement of River Discharge
- 57Largest River Basins in India (Catchment Area)
- 58Problems of River Water Usage
- 59Delta vs. Estuary
- 60Catchment Area of West Flowing Rivers
- 61Pollution Sources (Cultural)
- 62River Capture (River Piracy)
- 63Origins of Small East Flowing Rivers
- 64Origins of Small West Flowing Rivers
- 65Kanwar Lake (Oxbow)
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