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Remote Sensing and Water management - FEFlow

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Institut für<br />

UmweltingenieurwissenschaftenIfU<br />

Recharge rates from chloride method („ground truth“)<br />

Recharge by Chloride<br />

Method (mm/yr)<br />

60 chloride samples from boreholes<br />

Average chloride concentration: 21 mg/l<br />

⇒ Average recharge: 6.8 mm/yr<br />

25.00<br />

20.00<br />

15.00<br />

10.00<br />

5.00<br />

0.00<br />

-5.00<br />

Chloride (mg/l)<br />

10000.0<br />

1000.0<br />

100.0<br />

10.0<br />

1.0<br />

y = 0.057x - 0.8448<br />

R 2 = 0.734<br />

0.1<br />

0 10 20 30 40 50 60<br />

Sample number<br />

-100 0 100 200 300 400<br />

Average Net Exchange (mm/yr)

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