Salient Features | R and R | Environment 

 

 


Indira Sagar Project (ISP) is one of the 30 major projects proposed in Narmada Basin with the largest storage capacity in the country. The project is located near Punasa village in Khandwa District of  Madhya Pradesh.  It is a multipurpose River Valley Project for development of water resources of Narmada which envisages an annual irrigation potential of 1.69 lakh ha and generation of 1000 MW of hydropower.  The project shall also ensure supply of 0.06 MAF (74M.cum) of drinking water to rural areas in Khandwa district.  The regulated releases from this project shall help in providing 8.12 MAF (10015 M.cum) of water to Sardar Sarovar Project ex-Maheshwar project after generation of power at down stream projects viz. Omkareshwar Project and Maheshwar Project in Madhya Pradesh. 

PROJECT COST

The Planning Commission has accorded investment clearance to the project for a cost of Rs.1,993.67 crores at 1988 price level. The Govt. of Madhya Pradesh have further given revised administrative approval to the project for Rs.2,167.67 crores, comprising of Rs.832.32 crores for Unit-I (Dam), Rs. 619.37 crores for Unit-III (Power House), Rs.541.98 crores for Unit-II (Canal), and Rs. 174 crores as cost of command area development and catchment area treatment.

After taking over of Unit-I & Unit-III of ISP by the NHDC, the project estimate has been further revised. Cabinet Committee on Economic Affairs, Govt. of India in March, 2002, accorded approval to the cost estimate of Rs.4,355.57 crore (including IDC of Rs.488.37 crore) at September, 2000 price level for Unit-I and Unit-III. As per NWDT Award, 17.63% of the expenditure on account of Narmada Sagar Dam (Indira Sagar Dam) is chargeable to Sardar Sarovar Project in lieu of regulated supplies to be made from Indira Sagar Project.
 
The tentative cost estimate of Rs.1,200 crore at September, 2000 price level has been projected by NVDA for Unit-II (Canal) works. The revised cost estimate of Unit-II (Canal) is yet to be approved by the Planning Commission.

 

REGULATED RELEASES TO SSP

In accordance with Clause-IX of Narmada Water Dispute Tribunal (NWDT) award "Final Orders and Decisions", an annual regulated flow of 8.12 MAF (10015 M,cum) shall be released to Sardar Sarovar Project (SSP), ex-Maheshwar Project. The operation of Indira Sagar Project shall be carried out in such a way to facilitate the regulation of Sardar Sarovar.

 

Salient Features of Indira Sagar Project

S.NO.

DESCRIPTION

PARTICULARS

A.

GENERAL

1.

District

East Nimar (Khandwa)

2.

Latitude

220 17" 00"

3.

Longitude

760 28 00"

B.

HYDROLOGY

4.

Catchment Area (Sq.Km)

61,642

5.

Rainfall :

 
 

a. Maximum (mm)

1,879

 

b. Minimum (mm)

603

 

c. Average (mm)

1,288

6.

Dependable yeild [Bm3 / (M.A.F.) ]

 
 

a. 75 %

26.465 (21.47)

 

b. 90 %

18.184 (14.74)

7.

Standard project flood Outflow (cumecs)

65,670

8.

Probable maximum flood Outflow (cumecs)

83,534

C.

RESERVOIR LEVELS

9.

T.B.L (m)

267.00

10.

M.W.L (m)

263.35

11.

F.R.L. (m)

262.13

12.

M.D.D.L. (m)

243.23

13.

Crest level (spillway) (m)

245.13

14.

Water spread area at FRL (Sq. Kms.)

913.48

D.

STORAGE CAPACITY

15.

Gross [Bm3 / (MAF)]

12.220 (9.9)

16.

Live [Bm3 / (MAF)]

9.750 (7.9)

17.

Dead [Bm3 / (MAF)]

2.470 (2.0)

E.

CONCRETE GRAVITY DAM

18.

Total Length (m)
i. Non-overflow (m)
ii. Overflow portion (spillway) (m)
iii. Power dam (m)

653
158
495
-

19. Maximum height (m) 92

F.

RIVER DIVERSION WORK

20.

Length of diversion tunnel (m)

465

21.

Diameter of diversion tunnel (m)

8

22.

Design discharge (cumecs)

368

G.

EARTH DAM (Saddle)

23.

Length (m)

815

24.

Height (m)

10.7

II.

RADIAL CREST GATES

25.

Number

20

26.

Length (m)

20

27.

Height (m)

17

H.

POWER HOUSE

28.

Type of power house

Sub-surface

29.

Installed capacity (MW)

1000 (8 x 125)

I.

SUBMERGENCE

30.

i. Villages affected due to Submergence at F.R.L.
a. Fully Submerged (No)
b. Partially affected (No)

TOTAL

 

69
180
249

31.

ii. Population affected (1981 Census)

80,572

 

iii. Land :

 

32.

a. Cultivated area (ha.)

44,363

33.

b. Other area (ha.)

5,565

34.

c. Forest area (ha.)

41,348

 

TOTAL :

91,348

35.

iv. Diversion of railway line (kms)

57

J.

CANAL (Left Bank)

36.

Length (kms)

248.65

37.

Head discharge (cumecs)

160

 

ISP STATUS

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