HEC-RAS Simulation of Flood Management in Seruyan River A Case Study of Mekar Indah Village, East Seruyan Hilir and UPT Tanggul Harapan Pematang Limau Village, Seruyan Hilir
1Post-Graduate of Natural Resources and Environmental Management
Post-Graduate of Natural Resources and Environmental Management
Palangka Raya University
Post-Graduate of Natural Resources and Environmental Management
Post-Graduate of Natural Resources and Environmental Management
Post-Graduate of Natural Resources and Environmental Management
In 2020 and 2021, there was a big flood in (Technical Implementation Unit) UPT Tanggul Harapan, Pematang Limau Village, Seruyan Hilir District and Mekar Indah Village, Seruyan Hilir Timur District and it forced some people to flee their homes. The overflowing of Seruyan River is caused by high intensity of rain and river flooding from the headwaters of Seruyan. This condition occurred because of Mekar Indah Village and UPT. Tanggul Harapan is in a downstream location. The main objective of this research is to find out the effective way of controlling floods in the Seruyan River. The calculation result of flood peak volume is obtained by using the synthesis of hydrograph units using the SCS and Snyder methods. The results of this research indicated that the design of periodic re-rain for 50 years prior to the handling of floods in the area of UPT Tanggul Harapan occurred flooding of 94.96% of the entire area of UPT Tanggul Harapan. Meanwhile, in Mekar Indah Village occurred 40.72%, after simulating flood handling in making an embankment along 20111 m, elevation 5 m above sea level, top width of the embankment 5 m and 4 units of floodgates. It indicated a significant change in the flood area in UPT Tanggul Harapan to only 1.23%, while in Mekar Indah Village it is 0.80%. The simulation result indicated that flood management by making embankment is able to reduce the flood area by 93.19% in UPT Tanggul Harapan and 39.92% in Mekar Indah Village
Keywords: Flood Routing Flood Controlling HEC-HMS 4.10 HEC-RAS 6.2
Anto, W. (2019). Analisis dan Evaluasi Kapasitas Penampang Sungai Jatiroto dengan Menggunakan Program Hec-Ras 4.1 [Universitas Muhammadiyah Jember]. http://repository.unmuhjember.ac.id/7379/
Harto, S. (1993). Analisis Hidrologi. Gramedia Pustaka Utama.
Ikhsan, M., Refiyanni, M., & Nazimi, D. (2018). Studi Penelusuran Aliran Pada Sungai Krueng Meureubo Kecamatan Meurebo Kabupaten Aceh Barat. Jurnal Teknik Sipil Dan Teknologi Konstruksi, 4(1). https://doi.org/10.35308/jts-utu.v4i1.589
Limantara, L. M. (2010). Hidrologi Praktis. Lubuk Agung.
Muchamad Arif Budiyanto. (2017). Penelurusan Banjir Sungai Luk Ulo Akibat Perubahan Tutupan Lahan. Jurnal Geografi, 14(1), 26–39. http://journal.unnes.ac.id/sju/index.php/ujet
Noviandini, C. M., & Erwanto, Z. (2020). Penelusuran Banjir di Sungai Badeng Banyuwangi Menggunakan Metode Muskingum. Indonesian Society of Applied Science (ISAS), 6(1), 650–657.
Novitasari. (2010). Bahan ajar : Rekayasa Hidrologi I. Universitas Lambung Mangkurat Press.
Shadiq. (2008). Hidrolika Praktis dan Mudah. Pustaka Banua.
Soedodo Hardjoamodjodjo; Sukandi Sukartaatmadja. (2008). Teknik Pengawetan Tanah dan Air (1st ed.). Graha Ilmu.
Soemarto. (1987). Hidrologi Teknik. Usaha Nasional.
Suripin. (2004). Sistem drainase perkotaan yang berkelanjutan. Andi.
Triatmojo, bambang. (2008). Hidrologi Terapan (1st ed.). Beta Offset.
