Claim Missing Document
Check
Articles

Found 2 Documents
Search

Pemodelan Luas Genangan Banjir Batang Lunto di Wilayah Kota Sawahlunto Indra, Bambang Adi; Daud, Darwizal; Andriani, Andriani; Azra, Dio Syahlung
Jurnal Talenta Sipil Vol 8, No 1 (2025): Februari
Publisher : Universitas Batanghari Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33087/talentasipil.v8i1.848

Abstract

Batang Lunto originates in Barangin District, Sawahlunto City, West Sumatra Province and flows eastwards, dividing Sawahlunto City in Lembah Segar District and empties into Batang Ombilin. The Batang Lunto River is included in the Ombilin Coal Mining Heritage Area of Sawahlunto and has been designated as a world cultural heritage by the United Nations Educational, Scientific and Cultural Organization (UNESCO). During the rainy season along the Batang Lunto river, flooding often occurs, while along the Batang Lunto river there are heritage and geopark assets which are tourism destinations in Sawahlunto City. This research aims to model the area of the Batang Lunto flood inundation in the Sawahlunto City area as a first step in mitigating the risk of flood disasters with an area under review of 125.70 Ha. Modeling was carried out using a hydrological and hydrodynamic approach using rainfall data, topography and river flow characteristics. This research utilizes simulation software to map flood-affected areas with various flow discharge scenarios. Flood inundation simulations were carried out using ArcGIS 10.3, HEC-Ras 6.3.1 software at return periods of 2, 5, 10, 25, 50, 100 years. The results of this research show that the flood inundation area resulting from the HEC RAS simulation at the 2-year return period with a discharge of 102.61 m3/s is 18.12 Ha or around 14.42% of the total area of the survey area in this study and respectively for return periods 5, 10, 25, 50, 100 annual is 20.43 Ha (16.25%), 38.38 Ha (30.53%), 45.84 Ha (36.48%), 55.56 Ha (44.20%), 63.70 Ha (50.68%).
Analisis Perubahan Hidrograf Aliran Akibat Konversi Tutupan Lahan DAS Keureuto Rishaq, Alief Muhammad; Nanda, Syarifah Asria; Fadhliani, Fadhliani; Ersa, Nanda Savira; Usrina, Nura; Azra, Dio Syahlung; Budi, Rama
Teras Jurnal : Jurnal Teknik Sipil Vol. 14 No. 1 (2024): Volume 14 Nomor 1, Maret 2024
Publisher : UNIVERSITAS MALIKUSSALEH

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/tj.v14i1.1038

Abstract

Abstrak Perubahan tata guna lahan akibat peningkatan jumlah penduduk mengakibatkan bertambahnya area pemukiman. Meningkatnya kebutuhan manusia terhadap tempat tinggal dan aktivitas lainnya menyebakan terjadinya beberapa permasalahan lingkungan semakin kompleks. Apabila keadaan ini berlangsung secara terus menerus maka menyebabkan menurunnya kemampuan tanah dalam menyerap dan menampung air hujan terutama di kawasan DAS Krueng Keureuto. Tujuan Penelitian ini adalah mengetahui seberapa besar perubahan tata guna lahan terhadap perubahan hydrograph aliran pada Sub DAS Krueng Keureuto. Data yang digunakan adalah data DEMNAS dan data citra satelit landsat 8 tahun 2015 dan 2021. Berdasarkan peta tata guna lahan tahun 2015 dan 2021, terjadi penambahan luas area ladang sebesar 4,75%, pemukiman 6,34%, perkebunan 11,83%, semak belukar 5,75%, dan sungai 0,21%. Adapun area yang mengalami penurunan luas yaitu hutan sebesar 27,67% dan sawah 1,21%. Hal ini berdampak pada laju limpasan permukaan dan besarnya debit aliran sungai yang terpantau pada outlet DAS Krueng Keureuto. Kata kunci: tata guna lahan, daerah aliran sungai, keureuto   Abstract Increasing human needs for housing and other activities have resulted in several complex environmental problems, such as a decrease in the soil capacity to absorb and hold rainwater, especially in the Krueng Keureuto watershed area. The aim of this research is to determine how much land use changes have affected changes in the flow hydrograph in the Krueng Keureuto Sub-watershed. The data used is DEMNAS data and Landsat 8 satellite image data for 2015 and 2021. Based on the 2015 and 2021 land use maps, there has been an increase in the area of fields (4.75%), residential (6.34%), plantations (11.83%), bushes (5.75%), and rivers (0.21%). Meanwhile, the area that experienced a decrease was forest (27.67%) and rice fields (1.21%). This has an impact on the rate of surface runoff and the magnitude of river flow discharge monitored at the outlet of the Krueng Keureuto watershed. Keywords: land use change, watershed, keureuto