Table 7 The normalised weights of features for the eight thematic maps.

Rainfall

Low

0.35

0.110

35

1

Moderate

0.309

2

High

0.581

3

CI – 0.002

CR – 0.004

RI – 0.58

Geology

Charnockite

0.23

0.099

23

2

Gabbro

0.099

1

Khondalite

0.284

3

Migmatite

0.518

4

CI – 0.002

CR – 0.002

RI – 0.9

Slope

 < 3

0.12

0.445

12

5

3–8

0.297

4

8–15

0.147

3

15–30

0.073

2

 > 30

0.037

1

CI – 0.068

CR – 0.060

RI – 1.12

Drainage density

Very low (0–0.60)

0.11

0.445

11

5

Low (0.60–1.21)

0.297

4

Moderate (1.21–1.81)

0.147

3

High (1.81–2.4)

0.073

2

Very high (> 2.4)

0.037

1

CI – 0.068

CR – 0.060

RI – 1.12

Land use/ land cover

Barren land

0.6

0.122

6

2

Built-up land

0.057

1

Cropland

0.263

4

Forest

0.558

3

CI – 0.058

CR – 0.065

RI – 0.9

Lineament density

Very low (0–0.31)

0.5

0.045

5

1

Low (0.31–0.61)

0.077

2

Moderate (0.61–0.91)

0.154

3

High (0.91–1.22)

0.274

4

Very high (> 1.22)

0.450

5

CI – 0.012

CR – 0.010

RI – 1.12

Soil

Clayey soils

0.3

0.110

3

1

Gravelly clay soils deep

0.309

2

Gravelly clay soils shallow

0.581

3

CI – 0.002

CR – 0.004

RI – 0.058

Geomorphology

Structural hill

0.5

0.091

5

1

Pediplain

0.445

2

CI – 0.00

CR – 0.00

RI – 0.058