Recharge parameters

Classes

Degree of contribution

Assigned weight

Normalized weight (Subcategories)

1. Geomorphology

Outcrops of bedrock

Very poor

1

0.08

Lowland

Very high

7

0.26

Cuirass

Poor

3

0.11

Sandstone shelf

Medium

5

0.19

Water bodies

High

10

0.37

2. Geology

Dolerite

Poor

3

0.19

Pink fine sandstone

Medium

5

0.31

Quartz granulated sandstone

High

7

0.44

Siltite, argillite, carbonate

Very poor

1

0.06

3. Soils

Fersiallitic soils

High

7

0.24

Hydromorphic Soils

Poor

3

0.10

Mineral Soils

Very poor

1

0.03

Poorly developed soils

Very poor

3

0.10

Soils of Mull

Medium

5

0.17

Sesquioxides and mineralised organic

Very high

10

0.34

4. LULC

Water bodies

Very high

10

0.38

Build up

Very poor

1

0.04

Crops

Medium

5

0.19

Vegetation cover

High

7

0.27

Bare areas

Poor

3

0.12

5. Piezometric levels (m)

0.85 - 11

Very high

10

0.38

11 - 16.62

High

7

0.04

16.62 - 26.51

Medium

5

0.19

26.51 - 40.43

Poor

3

0.27

40.43 - 79.70

Very poor

1

0.12

6. Borehole flow rate (m³/h)

0 - 3

Very poor

1

0.04

3 - 5

Poor

3

0.12

5 - 10

Medium

5

0.19

10 - 15

High

7

0.27

15 - 73

Very high

10

0.38

7. Borehole depth (m)

0.3 - 50

Very high

10

0.38

50 - 60

High

7

0.27

60 - 75

Medium

5

0.19

75 - 100

Poor

3

0.12

100 - 228

Very poor

1

0.04