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Irwan Azhar
Program Studi Teknik Sipil Politeknik Kotabaru
Engineering

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ANALISIS TINGKAT KERAWANAN DAN MITIGASI BANJIR PERKOTAAN DI KECAMATAN PULAU LAUT UTARA KABUPATEN KOTABARU Irwan Azhar; Widy Afyat
INFO-TEKNIK Vol 22, No 2 (2021): INFOTEKNIK VOL. 22 NO. 2 DESEMBER 2021
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v22i2.12388

Abstract

Several efforts are needed in dealing with urban flood disasters to minimize the potential for large losses for the community. By mapping and knowing the pattern of flood distribution, this study was also built to determine the urban flood disaster mitigation system in Pulau Laut Utara District, Kotabaru Regency. The value of the flood susceptibility class interval aims to distinguish the flood susceptibility class, and by determining the intensity of inundation based on the inundation area and the elevation of the flood level. With processing the value from the investigation in Nort Pulau Laut covering several villages and roads, the level of vulnerability to flooding in Dirgahayu Village is 10.24% (low water level), 6.54% (medium water level), 1.33% (high water level). In Sungai Paring Village it was 2.81% (low water level), 10.18% (medium water level), 8.48% (high water level). In Baharu Village, it was 3.69% (low flood), 3.21% (medium water level), 10.87% (high water level). In Semayap Village it was 4.11% (low water level), 2.21% (medium water level), 2.58% (high water level). And in Sebelimbingan Village it was 4.67% (low water level), 3.90% (medium water level), and 8.25% (high water level). With intervals from each flood location, a value of 73.98 was obtained in the category of sufficiently prone to flooding.
EVALUASI KAPASITAS TAMPUNG AIR EMBUNG PADA DAERAH LAYANAN AIR MINUM EMBUNG TIRAWAN KABUPATEN KOTABARU TERHADAP JUMLAH PELANGGAN Irwan Azhar
INFO-TEKNIK Vol 23, No 2 (2022): INFOTEKNIK VOL. 23 NO. 2 DESEMBER 2022
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v23i2.14491

Abstract

The dry season for the people of Kotabaru is the most difficult period in one year, caused by the phenomenon of water scarcity. Most of the people in Kotabaru very depend on water supply from PDAM. Various efforts to fulfill the community's raw water needs have been carried out such as the construction of the Tirawan reservoir which is expected to be able, for meet the community's raw water needs. In measuring the optimal capacity of the reservoir, it is necessary to calculate the water holding capacity of the reservoir and investigate the area of the Tirawan reservoir. Analysis through rainfall calculation the Log Pearson Type III method. To compare Main capacity and discharge with customer's water requirement, So that it can be seen the service strength of the Tirawan reservoir to meet the water needs of customers during the current dry season and with return periods of 5, 10 and 20 years. The water holding capacity of the Tirawan reservoir is 210,014 m3 with the drainage capacity of the Tirawan reservoir in return periods of 0, 5, 10 and 20 years, to the customer's water demand discharge, respectively, which is Q Flow 0Year = 38.43 m3/s > Q requirement 0 Year = 0, 0632 m3/sec, 5 Year Q Flow = 5 Year Q Flow = 67.34 m3/sec > 5 Year Q requirement = 0.0688 m3/sec, 10 Year Q Flow = 91.97 m3/sec > 10 Year Q Flow = 0.0749 m3/sec and 20 Year Q Flow = 121.03 m3/second > Q20 Year Q requirement = 0.0887 m3/second is estimated to be able to meet customer water needs during the dry season period of 0 Year, 5 Year, 10 Year and 20 Year, respectively, for 92 days, 85 days, 78 days and 66 day.
Co-Authors Widy Afyat