Pollution of Rivers.<\/li>\n<\/ul>\nDrainage’ is a term signifying the river system of an area.<\/p>\n
A drainage basin or river basin is an area w’hich is drained by a single river system.<\/p>\n
An upland that separates two drainage systems that are next to each other is called a water divide.<\/p>\n
On the basis of origin, there are two river systems of India \u2014 The Himalayan rivers and the Peninsular rivers.<\/p>\n
Himalayan rivers are rainfed and snowfed, so they have w?ater in them throughout the year, i.e., they are perennial and thus navigable.<\/p>\n
Himalayan rivers create meanders, oxbow lakes and other depositional features on their course.<\/p>\n
Peninsular rivers are seasonal; mostly depending on rainfall and thus non-navigable.<\/p>\n
Most of the rivers of peninsular India originate in the Western Ghats and flow’ towards the Bay of Bengal.<\/p>\n
Drainage Class 9 Notes Chapter 3<\/strong><\/p>\nThe Himalayan Rivers<\/strong><\/p>\nA river along with its tributaries may be called a river system.<\/p>\n
The major Himalayan rivers are the Indus, the Ganga, and the Brahmaputra.<\/p>\n
The Indus River System<\/strong><\/p>\nRising near Lake Mansarovar in Tibet, the Indus enters India in the Ladakh district of Jammu and Kashmir.<\/p>\n
Rivers Satluj, Beas, Ravi, Chenab and Jhelum join Indus near Mithankot, Pakistan and flow southwards to fall into the Arabian Sea, east of Karachi.<\/p>\n
With a total length of 2,900 km, the Indus is one of the longest rivers of the world.<\/p>\n
Class 9 Geography Chapter 3 Notes<\/strong><\/p>\nThe Ganga River System<\/strong><\/p>\nThe headwaters of the Ganga are called ‘Bhagirathi’.<\/p>\n
Bhagirathi is fed by the Gangotri Glacier and joined by the Alaknanda at Devprayag.<\/p>\n
Ganga meets the tributaries from the Himalayas such as Ghaghara, Gandak, Kosi and the Yamuna.<\/p>\n
A major river Yamuna, arising from Yamunotri Glader in the Himalayas, joins Ganga at Allahabad.<\/p>\n
Other tributaries \u2014 Chambal, Betwa and Son \u2014 come from Peninsular uplands to join Ganga.<\/p>\n
Ganga is joined by the Brahmaputra and flows through Bangladesh to reach the Bay of Bengal.<\/p>\n
The delta formed when the Ganga and the Brahmaputra flow into the Bay of Bengal is known as the Sunderban Delta.<\/p>\n
The length of the Ganga is over 2,500 km and it develops large meanders.<\/p>\n
Drainage Notes Class 9 Chapter 3<\/strong><\/p>\nThe Brahmaputra River System<\/strong><\/p>\nOriginating in Tibet, very close to the sources of Indus and Satluj, Brahmaputra enters India in Arunachal Pradesh and flows to Assam, joined by many tributaries.<\/p>\n
The tributaries that join the Brahmaputra are Dibang, Lohit, and Kenula.<\/p>\n
The Brahmaputra has a braided channel in its entire length in Assam to form many riverine islands.<\/p>\n
Unlike other north Indian rivers, the Brahmaputra is marked by huge deposits of silt on its bed, causing the riverbed to rise.<\/p>\n
Geography Chapter 3 Class 9 Notes<\/strong><\/p>\nThe Peninsular Rivers<\/strong><\/p>\nThe major rivers of the peninsula\u2014Mahanadi, Godavari, Krishna, and Kaveri\u2014flow eastwards to drain into the Bay of Bengal.<\/p>\n
The Thai and Narmada are the only rivers which flow west to make estuaries and drain into the Arabian Sea.<\/p>\n
The drainage basins of the peninsular rivers are comparatively small in size.<\/p>\n
The Godavari Basin<\/strong><\/p>\nThe Godavari begins in Nasik district of Maharashtra. It is the largest peninsular river.<\/p>\n
Its large basin covers most parts of Maharashtra, Madhya Pradesh, Orissa and Andhra Pradesh.<\/p>\n
The tributaries which join the Godavari include Purna, Wardha, Pranhita, Manjra, Wainganga and Penganga.<\/p>\n
Because of its length and the area, it covers, the Godavari is also known as the Dakshin Ganga.<\/p>\n
The Godavari drains into the Bay of Bengal.<\/p>\n
Class 9 Drainage Notes Chapter 3<\/strong><\/p>\nThe Mahanadi Basin<\/strong><\/p>\nThe Mahanadi, a 860 km long river, rises in Chhattisgarh to flow through Orissa to reach the Bay of Bengal.<\/p>\n
Principal tributaries of Mahanadi river are Sheonath, Jonk, Hasdeo, Mand, lb, Ong and Tel.<\/p>\n
Mahanadi river basin is shared by Maharashtra, Orissa, Jharkhand and Chhattisgarh.<\/p>\n
Is is one of the major east flowing peninsular rivers draining into Bay of Bengal.<\/p>\n
The Krishna Basin<\/strong><\/p>\nThe 1,400 km long Krishna river rises from a spring in the Mahadev range near Mahabaleshwar and falls into the Bay of Bengal.<\/p>\n
The tributaries of Krishna include Bhima, Musi, Ghatprabha, Koyana and Tungabhadra. The Krishna basin is shared by Maharashtra, Karnataka and Andhra Pradesh.<\/p>\n
Geography Class 9 Chapter 3 Notes<\/strong><\/p>\nThe Narmada Basin<\/strong><\/p>\nRising in the Amarkantak Plateau of Maikala Range, Narmada flows to create a gorge in marble rocks of Madhya Pradesh.<\/p>\n
Narmada flows towards the west in a rift valley formed due to faulting. \u2022<\/p>\n
Narmada river has 41 tributaries. The important ones are: Barna, Ganjal, Chhota Tawa, Hiran, Janatara, Kolar, Orsang, Sher.<\/p>\n
The Tapi Basin<\/strong><\/p>\nOriginating in Betul, Madhya Pradesh, the Tapi flows through a basin that covers Madhya Pradesh, Gujarat and Maharashtra.<\/p>\n
The main west flowing rivers are Sabarmati, Mahi, Bharatpuzha and Periyar.<\/p>\n
The entire Tapi basin can be divided into three sub-basins: upper, middle and lower and into two well- defined physical regions, viz, the hilly regions and the plains or Tapi Basin.<\/p>\n
Drainage Chapter Class 9 Notes Chapter 3<\/strong><\/p>\nThe Kaveri Basin<\/strong><\/p>\nOriginating in the Brahmagiri range of the Western Ghats, the Kaveri reaches the Bay of Bengal at Kaveripatnam, sharing its basin with Karnataka, Tamil Nadu, Kerala and Puducherry or Pondicherry.<\/p>\n
The main soil types found in the basin are red and yellow soils.<\/p>\n
Lakes<\/strong><\/p>\nMost lakes are permanent while others contain water only during the rainy season.<\/p>\n
Some lakes are the result of the glacial action and ice sheets and some may have been formed by wind, river action and human activities.<\/p>\n
A river meandering across a floodplain forms cut-offs that later develop into oxbow lakes.<\/p>\n
Glacial lakes are formed when glaciers dig out a basin which is later filled with snowmelt.<\/p>\n
Some lakes like Wular Lake in Jammu and Kashmir result from tectonic activity.<\/p>\n
Apart from natural lakes, the damming of the rivers for the generation of hydel power has also led to the formation of lakes.<\/p>\n
Lakes help to regulate river water flow, prevent flooding, aid to develop hydel power, moderate climate, maintain aquatic ecosystem, enhance natural beauty, develop tourism and provide recreation.<\/p>\n
Class 9 Geography Chapter 3 Notes Pdf<\/strong><\/p>\nRole of Rivers in the Economy<\/strong><\/p>\nRivers are a natural source of water. It forms the main backbone for agriculture.<\/p>\n
Settlements on the river banks have developed into cities.<\/p>\n
Rivers are used for irrigation, navigation, hydropower generation, all vital for India, and agricultural economy.<\/p>\n
River Pollution<\/strong><\/p>\nQuality of river water is affected by the growing domestic, municipal, iftdustrial and agricultural demand.<\/p>\n
A heavy load of untreated sewage and industrial effluents are emptied into the river affecting the river’s self-cleansing property.<\/p>\n
Concern over rising pollution in our rivers led to the launching of various action plans to clean the rivers like Narmada Bachao Movement.<\/p>\n
We hope the given Drainage Class 9 Notes Social Science Geography Chapter 3 SST Pdf free download will help you. If you have any query regarding Drainage Class 9 Geography Chapter 3 Notes, drop a comment below and we will get back to you at the earliest.<\/p>\n","protected":false},"excerpt":{"rendered":"
Drainage Class 9 Notes Social Science Geography Chapter 3 SST Pdf free download is part of Class 9 Social Science Notes for Quick Revision. Here we have given Drainage Class 9 Geography Chapter 3 Notes. https:\/\/www.cbselabs.com\/drainage-class-9-notes\/ Drainage Class 9 Notes Social Science Geography Chapter 3 In the previous 3 years’ examinations, significant importance has been …<\/p>\n","protected":false},"author":27,"featured_media":164258,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"spay_email":""},"categories":[2],"tags":[],"yoast_head":"\n
Drainage Class 9 Notes Geography Chapter 3 - CBSE Labs<\/title>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\t\n\t\n\n\n\n\n\t\n\t\n\t\n