Case Study

The case study included eight hydrological cells in the coastal aquifer of Israel, as described in Tables 7.4 and 7.5. The case study included two areas, each with four hydrological cells. The first area, Coastal 1, is almost exclusively devoted to agricultural land use. The main water source is wastewater (more than 50% of total), followed by local aquifer (a little over 40%). The second area, Coastal 2, is divided between agriculture (two thirds) and urban land use (one third). The main water source is National carrier water (more than 50% of total), followed by local aquifer (less than 40%).

Table 7.4 Case study hydrological cells

Coastal 1

Coastal 2

No. of hydraulic cells

4

4

Groundwater salinity

>230 mg/L Cl

<164 mg/L Cl

Other

Effluents from wastewater plant

Table 7.5 Land and water use in the coastal region

Coastal 1a

Coastal 2a

Total region

Land use

Water use

Land use

Water use

Land use

Water use

Agriculture: Total

99%

24.46

51%

34.88

67%

59.34

National carrier

0.9%

34.3%

20.5%

Local aquifer

38.5%

55.6%

48.6%

Wastewater

60.6%

10.1%

30.9%

Urban: Total

1%

2.57

49%

24.71

33%

27.29

National carrier

0.8%

88.1%

79.8%

Local aquifer

99.2%

11.9%

20.2%

Total

8,354

27.03

16,164

59.59

24,518

86.63

aLand use - total ha or % of total; water use

- total mcm or

% of total

Table 7.6 Case study scenarios

Threshold for water salinity

Freshwater: town Wastewater: irrigation Priority of pumped Scenario (mg/L Cl) (mg/L Cl) water

1 250 250 Town

2 250 250 Town

3 150 250 Town

4 50 250 Town

5 250 Not included Town

6 250 Not included Agriculture

7 250 350 Agriculture

8 250 350 Town

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