Teras Jurnal
Vol 13, No 2 (2023): Volume 13 Nomor 2, September 2023

Analisis Tinggi Muka Air Kanal Bandara Kota Tarakan Akibat Pengaruh Pasang Surut Menggunakan HEC-RAS 6.0

Aswar Amiruddin (Unknown)
Muhamad Roem (Universitas Borneo Tarakan)
Rahmat Faizal (Universitas Borneo Tarakan)



Article Info

Publish Date
06 Oct 2023

Abstract

Abstrak Banjir akibat air pasang atau banjir rob merupakan salah satu bencana yang sering terjadi di wilayah pesisir yang menggenangi bagian daratan di wilayah pesisir yang memiliki ketinggian (elevasi) lebih rendah dari muka air laut pasang tinggi. Kejadian banjir akibat pasang ini sudah memasuki area pemukiman penduduk di beberapa titik lokasi di Tarakan termasuk di sekitar kanal bandara Kota Tarakan. Berdasarkan pengamatan lapangan terdapat pemukiman warga di sisi kiri aliran kanal bandara Kota Tarakan, sehingga genangan mengganggu aktivitas warga. Berdasarkan permasalahan tersebut penelitian ini bertujuan untuk mengetahui tinggi muka air pada penampang kanal bandara Kota Tarakan akibat pasang surut dan banjir rancangan periode ulang 5 dan 10 tahunan. Metode yang digunakan untuk menganalisis tinggi muka air kanal bandara Kota Tarakan yakni menggunakan software HEC-RAS. Berdasarkan hasil analisis tinggi muka air menggunakan HEC-RAS diperoleh tinggi muka air penampang kanal bandara Kota Tarakan akibat banjir 5 tahunan dan 10 tahunan yang terjadi bersamaan dengan pasang tertinggi (HHWL) diperoleh tinggi muka air pada penampang sta 0+100 – 1+000 sebesar 3,8 m dan penampang 1+100 – 1+500 sebesar 3,81 m. Dari hasil penelitian ini maka disarankan pemerintah membangun pengendalian banjir dengan membuat tanggul dengan elevasi +4,5 m dari datum muka air terendah (LLWL). Kata kunci: Banjir rancangan, HEC-RAS, pasang surut, tinggi muka air,  Abstract Floods caused by high tides or tidal floods are one of the disasters that often occur in coastal areas that inundate the mainland areas in coastal areas that have lower elevations than the high tide sea level. The occurrence of tidal floods has entered residential areas at several locations in Tarakan, including around the Tarakan City airport canal. Based on field observations, there are residential areas on the left side of the Tarakan City airport canal, so the inundation disturbs the activities of the residents. Based on this problem, this study aims to determine the water level in the section of the Tarakan City airport canal due to tidal floods and floods with a 5-year and 10-year return period. The method used to analyze the water level of the Tarakan City airport canal is by using the HEC-RAS software. Based on the analysis results of the water level using HEC-RAS, the water level in the Tarakan City airport canal section due to a 5-year and 10-year flood that occurs simultaneously with the highest tide (HHWL) was obtained the water level at the sta 0+100 - 1+000 section is 3,8 m and the section of 1+100 - 1+500 is 3,81 m. From the results of this study, it is recommended that the government build flood control by constructing embankments with an elevation of +4,5 m from the lowest water level datum (LLWL). Keywords: Flood design, HEC-RAS, tides, water level,

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Journal Info

Abbrev

teras

Publisher

Subject

Civil Engineering, Building, Construction & Architecture Engineering Environmental Science

Description

Teras Jurnal is a journal that communicates the results of research within the scope of civil engineering and scientific development as well as aspects of practitioners. The process of manuscript submission is open throughout the year. All submitted manuscript will be screened with double-blind peer ...