Table 1 Weightage of different classes for identification of groundwater prospect zone.

Rainfall

Low

0.33

33

1

Moderate

3

High

4

CI – 0.005

CR-0.008

Geology

Charnockite

0.23

23

4

Hornblende biotite gneiss

3

Epidote–hornblende gneiss

1

Garnet-sillimanite gneiss

2

Quartz vein

1

Shales with bands of limestone

3

Syenite/Nephelene syenite corrundun syenite

2

CI – 0.010

CR-0.008

Geomorphology units

Valley fill

0.18

18

4

Denudational hills

3

Structural hill

1

Pediplain

2

Piedmont zone

2

CI – 0.115

CR-0.008

Slope

Gentile slope

0.8

8

3

Moderate slope

2

Steep slope

1

Very steep slope

1

CI – 0.023

CR-0.009

Lineament density

Very high lineament density

0.5

5

4

Moderate lineament density

3

Low lineament density

2

Very low lineament density

1

CI – 0.016

CR-0.009

Drainage density

Very high drainage density

0.7

7

1

Moderate drainage density

2

Low drainage density

3

Very low drainage density

4

CI – 0.033

CR-0.009

Land use/land cover

Waterbody

0.3

3

4

Cultivation land

3

Forest lands

3

Waste land rock surface

1

Settlements

1

CI – 0.068

CR-1.12

Soil

Alfisols

0.3

3

2

Entisols

2

Forest unsurveys

3

Hill soil

3

Inceptisols

4

Reserve forest

2

Water bodies

4

CI – 0.123

CR-1.32