Necessity of Regional Co-operation - The Ganga: Water Use in the Indian Subcontinent - page 260

Table 14.1 Tributaries of the Ganga river (up to Farakka)

Country from
which
originated

Catchment
area covering
the Country

Name of
tributary

Name of
sub-tributary

Average annual
run-off (Mm 3 ) Remarks

1 2 3 4 5 6

A) Northern
side
i) Ramaganga - India India 15,300 -

ii) Gomati - India India 7,400 -

iii) Ghagra a) Sarda

b) Karnali
c) Rapti

India
Nepal
Nepal

India + Nepal
Do
Do

Total-94,500 Small

contribution
from Nepal

iv) Gandak - Nepal India + Nepal 52,000

v) Kosi a) Buri Gandak

b) Bagmati
c) Kamala
d) Sun Kosi
e) Arun Kosi

Nepal
Nepal
Nepal
Nepal
Nepal

India + Nepal
Do
Do
Do
Do

Total-69,000 -

-
-
-
-
-

B) Southern
side
i) Yamuna a) Chambal

b) Sind
c) Betwa

India India Total-98,000 -

ii) Ken
iii) Tons
iv) Sone
v) Kiul
vi) Punpun
vii) Gumani

-
-
-
-
-
-

India
India
India
India
India
India

India
India
India
India
India
India

11,500
6,000
32,000
5,000
4,000
2,000

-
-
-
-
-
-

No dams have been constructed on any of these tributaries and the passage of
water has not been fully blocked, but other types of control structures, such as bar-
rages, anicuts etc. have been constructed across most of the tributaries and the parent
river Ganga for diversion of some discharge for irrigation and other purposes.
The average monthly discharge of the Ganga river at Farakka point is shown in
Table 14.2.
James M. Coleman recorded an average annual discharge of 412,000 cusecs,
or 11,665 cumecs and maximum high-flood discharge of 2.585 million cusecs, or
73,190 cumecs in September 1961 near the Hardinge Bridge. The lowest flow, as he
recorded, in the river as 42,000 cusecs, or 1189 cumecs. From the Table 14.3, it is
observed that the average annual discharge in the river between 1979 and 1988 was
393,000 cusecs or 12,120 cumecs. The highest discharge, recorded in September
1998 was about 2,650,000 cusecs, or 75,000 cumecs and minimum discharge was
about 1,050 cumecs, or 37,000 cusecs, in April 1980. In the Ganga, the flow goes
down from October, hits the minimum between the last weeks of March and April,
then rises from May-end, or the first part of June and hits the maximum between