CBSE chapter 3 geography for class 9th

2.  The term “drainage” describes the river
system of an area.
 The area drained by a single river system is
called a “drainage basin” or river basin.
 Any higher ground, such as mountain or
upland separates two adjoining drainage
basins. Such upland is known as a water
divide or a watershed.
 Depending upon the relief, geological
structure and climatic conditions of the area,
the streams form different patterns.

3.  The drainage system in India are
mainly controlled by the board
relief features of the sub
continent.
 The Indian rivers are divided
into two major groups :
1. The Himalayan rivers,
2. The peninsular rivers.

4.  Rippling along rough surfaces and the
beautiful meadows, the numerous rivers that
dot Indian mainland are central to our history
as well as to Indian mythology. The main rivers
of the Himalayas group are the Indus, the
Ganga and the Brahmaputra. These rivers are
both snow-fed and rain-fed and therefore they
are flow through so many year. Himalayan
rivers discharge about 70% of their inflow into
the sea. This includes about 5% from central
Indian rivers. They join the Ganga and drain
into the Bay of Bengal

5. 1. The Indus
2. The ganga
3. The Brahmaputra
 The Himalayan rivers are long, and are
joined by many large and important
tributaries. A river along with its
tributaries may be called a river system.

6.  The river Indus rises in Tibet, near
lake Mansarovar.
 Flowing towards West – 2900 km
Course.
 Enters India through Ladakh district
of J&K .
 Tributaries are- the Zaskar, Nubra,
Shyok & hunza.

7.  The head waters of The Ganges called the
‘Bhagirathi’ is fed by Gangotri glacier.
 It emerges from mountains joined by the
Alaknanda and Devaparyag at
Uttarakhand.
 Flowing towards north- 1,500 km.
 Tributaries are – Kavi , Damodar,
Yamuna, Gomti, Kosi, Gandak.

8.  It rises in Tibet near the
Mansarovar lake. It is slightly
longer than the Indus.
 It flows from East to West and is
2900 (In India its 916)km.
 Tributaries are – Dibang ,Lohit
etc. and many other.

9.  The main water divide in the
peninsular India is formed by
the Western Ghats, from the
north and the south close to the
western coast. Major rivers are
Mahanadi , Godavari, flow
eastwards and drain into Bay Of
Bengal.

12. Thank you
made by yash
purohit from
class IX