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Rahmad Yulianto
Program Studi Teknik Sipil, Fakultas Teknik Dan Perencanaan, Universitas Ekasakti
Humanities Computer Science & IT Education Industrial & Manufacturing Engineering Social Sciences

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ANALYSIS OF DRAINAGE CHANNEL CAPACITY ON KAMPUNG DURIAN ROAD, PARAK GADANG TIMUR URBAN VILLAGE, EAST PADANG DISTRICT, PADANG CITY, WEST SUMATRA Nazili Nazili; Rahmad Yulianto
Journal of Scientech Research and Development Vol 7 No 2 (2025): JSRD, December 2025
Publisher : Ikatan Dosen Menulis

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56670/jsrd.v7i2.1710

Abstract

Padang is a city located on the west coast of Sumatra, covering an area of ​​694.96 km² with a population of 954,177 according to the 2024 census. The city is traversed by five major rivers—Batang Kandis, Pisang, Mentawai, Manuk, and Patai—as well as sixteen smaller rivers (Cipta Karya, 2014). High rainfall in Padang has resulted in areas prone to flooding, particularly in the Kampung Durian neighborhood of Parak Gadang Timur Urban Village, East Padang District. The flooding is attributed to high-intensity, prolonged rainfall; contributing factors include poorly functioning existing drainage systems and physical railway infrastructure that reportedly obstructs river flow, thereby reducing the rivers' capacity to handle heavy rainfall. This study calculated the design rainfall for a 5-year return period using frequency distribution analysis, yielding 285.83 mm. Using the rational method, the design flood discharge was calculated for each of the drainage system's 18 segments (Q1–Q18), with the largest individual peak of 0.668 m³/second occurring at segment Q11 due to its largest catchment area, while the combined system peak discharge was estimated at 2.756 m³/second. A proposed channel redesign measuring 1.00 m wide and 0.70 m deep was evaluated using Manning's equation, yielding a conveyance capacity of 2.90 m³/second—sufficient to accommodate the design flood discharge and expected to reduce flooding risk along Kampung Durian Road.
Co-Authors Nazili Nazili