Table 4.11 shows the manual calculation result on time area method for case study location, calculated using spreadsheet based on the formulas explained in the theory section.

Table 4.11:  Manual Calculation of Time Area Method for Air Terjun Sg Batu, Kuala Lumpur Base On (MSMA, 2011)

Figure 4.8 shows the inflow hydrograph for Air Terjun Sg Batu, Kuala Lumpur based on (MSMA, 2000) with time concentration is 30 minutes.

Figure 4.8:  Hydrograph for Air Terjun Sg Batu, Kuala Lumpur using (MSMA, 2011).

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