19. Rainwater Harvesting- Dinesh Et Al

8/4/2019 19. Rainwater Harvesting- Dinesh Et Al

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Marginal benefit (Social,

Environmental and

Economic)

M

arginalCost/benefit

Wet

Year

Degree of Water Development

Wet Year

Dry Year


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Figure 3: Water Level Fluctuation in Wells in Fulzar, Ghelo River

Basin

0

5

10

15

2025

30

35

40

45

15-06

22-06

29-06

6-07

13-07

20-07

27-07

3-08

10-08

17-08

24-08

31-08

7-09

14-09

21-09

28-09

5-10

12-10

19-10

26-10

2-11

9-11

16-11

0

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20

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50

60

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Rainfall, mm Nr-Median Far-Median


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Figure 3: Ghelo-Somnath Rainfall and Reservoir Inflows

0

20

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60

80

100

120

140

Total Rainfall, Cms Total Roff, Cms


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Figure 5: Impact of Water Harvesting on Inflows in Reservoir:

Ghelo-Somnath

y = 7.7637Ln(x) - 17.328

R2

= 0.4577

-10

0

10

20

30

40

0 20 40 60 80 100 120 140

Rainfall (cm)

Runoff(cm)


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5 The concept of green water was first introduced by Prof. Malin Falkenmark in 1995.


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19. Rainwater Harvesting- Dinesh Et Al