MIP Method for Hydrology Calculation

month january february march april may june july august september october november december

non-dimensional regional hydrograph region 1 2 3 4 2.40 2.24 2.71 2.59 1.80 1.70 1.88 1.88 1.30 1.33 1.38 1.38 1.00 1.00 1.00 1.00 2.60 1.21 1.88 2.19 6.00 7.27 3.13 3.75 14.50 18.18 13.54 6.89 25.00 27.27 25.00 27.27 16.50 20.91 20.83 20.91 8.00 9.09 10.42 6.89 4.10 3.94 5.00 5.00 3.10 3.03 3.75 3.44

given region=

5 2.42 1.82 1.36 1.00 0.91 2.73 11.21 13.94 10.00 6.52 4.55 3.33

6 2.03 1.62 1.27 1.00 2.57 6.08 24.32 33.78 27.03 6.08 3.38 2.57

7 3.30 2.20 1.40 1.00 3.50 6.00 14.00 35.00 24.00 12.00 7.50 5.00

3

estimating the hydrograph of mean monthly flows

month january february march april may june july august september october november december

measured 3 non-dimensional hydrograph value (m /s) 2.71 1.88 1.38 1.00 1.88 3.13 13.54 25.00 20.83 10.42 5.00 3.75

predicted april flow (m3/s)

0.396 1.24

predicted hydrograph (m3/s) 1.074 0.745 0.547 0.396 0.745 1.240 5.364 9.904 8.252 4.128 1.981 1.486

plotting data

month january february march

predicted hydrograph( 3 m /s) 1.074 0.745 0.547

predicted hydrogr 15.000

april may june july august september october november december

0.396 0.745 1.240 5.364 9.904 8.252 4.128 1.981 1.486

10.000

5.000

0.000

flow duration curve

s.no. 1 2 3 4 5 6 7 8 9 10 11 12

discharge 1.074 0.745 0.547 0.396 0.745 1.240 5.364 9.904 8.252 4.128 1.981 1.486

discharge probability of exceedence (%) m3/s 8.33 9.904 16.67 8.252 25.00 5.364 33.33 4.128 41.67 1.981 50.00 1.486 58.33 1.240 66.67 1.074 75.00 0.745 83.33 0.745 91.67 0.547 100.00 0.396

12.000 10.000 8.000 6.000 4.000 2.000 0.000

0 5 10 15 20 25 30 35 40 45 50 55

4.5 4.15 3.72 2.6 2.42 2.236 1.456 1.112 0.975 0.752 0.632 0.542

0.00

10.00

20.00

60 65 70 75 80 85 90 95 100

0.442 0.412 0.392 0.37 0.312 0.254 0.212 0.176 0.154

1 2 3 4 5 6 7

predicted hydrograph(m3/s)

predicted hydrograph(m3/s)

FLOW DURATION CURVE

discharge m3/s

30.00

40.00

50.00

60.00

70.00

80.00

90.00

100.00

110.00

Exceedence (%)

discharge m3/s

(%)