Analysis of Flood Control Using the Polder System at Campus II Bung Hatta University, Air Pacah, Padang City

Dio Mahendra, Dastur and Zahrul, Umar (2023) Analysis of Flood Control Using the Polder System at Campus II Bung Hatta University, Air Pacah, Padang City. Diploma thesis, UNIVERSITAS BUNG HATTA.

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Abstract

Campus II of Bung Hatta University is located in Air Pacah district. Flood often occur in this area in the event of rain, the recent flood occured in July 2023. Embankment will be applied surrounding the campus area to prevent flood, this study aims to control the inundation inside the polder of campus II of Bung Hatta University after the application of embankment through the use of retention pond and pump. To determine the design discharge of the rainfall and inundation, rainfall discharge data for the last ten years are analyzed with Normal, Log Normal, Gumbel, and Log Pearson Type III methods. The data then are tested with Chi-Square and Smirnov Kolmogorov methods with the result of Normal method appeared to be most suitable. The design rainfall discharge for the return period of 5 year is optained as 180.69 mm/day, and inundation discharge within the polder area with the same duration of the rain and concentration time of 10 minutes is obtained as 1.973 m3/sec. Retention pond capacity is optained as 851.452 m3 with the pump capacity of 0.5 m3/sec. Embankment will be applied in the height of 80 cm, based on the height of the flood of 70 cm in the surveyed point of the main gate of the campus.

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