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Journal : JURNAL SUMBER DAYA AIR

KOMBINASI PREDIKSI VOLUME SEDIMEN MENGGUNAKAN METODE HECRAS-USLE UNTUK MENDUKUNG KONSERVASI DAS LAMBIDARO PALEMBANG, SUMATERA SELATAN Masri nur Sultan; Mohammad Farid; Adi Prasetyo; Muhammad Syahril Badri Kusuma; Dantje Kardana Natakusumah
JURNAL SUMBER DAYA AIR Vol 19, No 2 (2023)
Publisher : Bina Teknik Sumber Daya Air, Kementerian Pekerjaan Umum dan Perumahan Rakyat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32679/jsda.v19i2.851

Abstract

ABSTRACT Over the past ten years, flooding has been the most frequent problem in South Sumatra Province, Indonesia. As the capital of South Sumatra Province, Palembang City faces similar problems, where Lambidaro Watershed is the watershed with the highest 25-year potential flood discharge in Palembang City. One of the causes of flooding is the lack of river channel capacity related to land erosion in the watershed. This study aims to learn the prediction of sediment volume and efforts to reduce it in the Lambidaro watershed, Palembang City. This study uses two types of modeling, namely numerical models and empirical models. The numerical model uses the HEC-RAS 6.3.1 application, while the empirical model uses the USLE and SDR equations. The input parameters of the numerical model use some data derived from field measurements. The sediment concentration and observation discharge parameters were measured three times in September 2022. The grain size distribution parameters were sampled at three locations each once in August 2022, and the cohesive parameter was sampled at one location twice in August 2022. The result of the prediction of sediment volume by the numerical model is 1,421.86 m3/year. In contrast, the result of the prediction by the empirical model is 476,941.25 m3/year. Efforts to reduce the prediction of sediment volume USLE method are in the form of applying the intercropping method. The results of the conservation study show that the efforts made can reduce the volume of sediment by 17%.Keywords:       sediment, flood, conservation, intercropping, Lambidaro,  ABSTRAKSelama sepuluh tahun terakhir, banjir telah menjadi masalah yang paling sering terjadi di Provinsi Sumatera Selatan Indonesia. Sebagai ibu kota provinsi Sumatera Selatan, kota Palembang menghadapi masalah serupa. dimana DAS Lambidaro adalah DAS dengan potensi debit banjir kala ulang 25 tahun tertinggi di kota Palembang. Salah satu penyebab banjir adalah penurunan kapasitas alur sungai yang berkaitan dengan erosi lahan di DAS. Penelitian ini bertujuan untuk melakukan kajian prediksi volume sedimen serta upaya pengurangannya di DAS Lambidaro. Penelitian ini menggunakan dua jenis pemodelan yaitu model numerik dan model empirik. Model numerik menggunakan aplikasi HEC-RAS 6.3.1 sedangkan model empirik menggunakan persamaan USLE dan SDR. Parameter input dari model numerik menggunakan beberapa data yang berasal dari pengukuran lapangan. Parameter konsentrasi sedimen dan debit sesaat diukur sebanyak tiga kali pada bulan September tahun 2022. Parameter gradasi butiran diambil sampelnya masing – masing pada tiga lokasi sebanyak satu kali, dan parameter kohesif diambil sampelnya pada satu lokasi sebanyak dua kali pada bulan Agustus tahun 2022. Hasil prediksi sedimentasi dasar sungai model numerik adalah 1.421,86 m3/tahun sedangkan hasil prediksi volume sedimen model empirik adalah 476.941,25 m3/tahun. Upaya mengurangi prediksi volume sedimen metode USLE berupa penerapan metode tumpang-sari. Hasil kajian konservasi menunjukkan upaya yang dilakukan dapat mengurangi volume sedimen sebesar 17%.Kata Kunci:             sedimen, banjir, konservasi, tumpang-sari, Lambidaro
KOMBINASI PREDIKSI VOLUME SEDIMEN MENGGUNAKAN METODE HECRAS-USLE UNTUK MENDUKUNG KONSERVASI DAS LAMBIDARO PALEMBANG, SUMATERA SELATAN Sultan, Masri nur; Farid, Mohammad; Prasetyo, Adi; Kusuma, Muhammad Syahril Badri; Natakusumah, Dantje Kardana
JURNAL SUMBER DAYA AIR Vol 19, No 2 (2023)
Publisher : Direktorat Bina Teknik Sumber Daya Air, Kementerian Pekerjaan Umum dan Perumahan Rakyat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32679/jsda.v19i2.851

Abstract

 Over the past ten years, flooding has been the most frequent problem in South Sumatra Province, Indonesia. As the capital of South Sumatra Province, Palembang City faces similar problems, where Lambidaro Watershed is the watershed with the highest 25-year potential flood discharge in Palembang City. One of the causes of flooding is the lack of river channel capacity related to land erosion in the watershed. This study aims to learn the prediction of sediment volume and efforts to reduce it in the Lambidaro watershed, Palembang City. This study uses two types of modeling, namely numerical models and empirical models. The numerical model uses the HEC-RAS 6.3.1 application, while the empirical model uses the USLE and SDR equations. The input parameters of the numerical model use some data derived from field measurements. The sediment concentration and observation discharge parameters were measured three times in September 2022. The grain size distribution parameters were sampled at three locations each once in August 2022, and the cohesive parameter was sampled at one location twice in August 2022. The result of the prediction of sediment volume by the numerical model is 1,421.86 m3/year. In contrast, the result of the prediction by the empirical model is 476,941.25 m3/year. Efforts to reduce the prediction of sediment volume USLE method are in the form of applying the intercropping method. The results of the conservation study show that the efforts made can reduce the volume of sediment by 17%.Keywords:       sediment, flood, conservation, intercropping, Lambidaro 
Co-Authors Adelino, Muhammad Ilham Adi Kuntoro, Arno Adi Prasetyo Adi Prasetyo Adityawan, Mohammad Bagus Akyunul Jannah Anik Maunatin Antalia K.M. Katili Arno Adi Kuntoro Arno Adi Kuntoro, Arno Adi Arumjeni Mitayani Aryanti Karlina Nurendyastuti Audrienne, Resanti Avis Mellivera Bagus Adityawan , Mohammad Bagus Pramono Yakti Bin Ishak, Ismayuzri Burnama, Nabila Siti Calvin Sandi Chaidar, Ana Nugranah Chaidar, Ana Nurganah Dantje Kardana Natakusumah Dendy Permana Dewi, Alfita Dhemi Harlan Dina P.A Hidayat Eka Oktariyanto Nugroho Erha Intan Sukmajati Fachri, Fiqih Jul Faisal Yunus Faizal Immaddudin Wira Rohmat Fatchurrohman, Nanang Febry, Muhammad Fitri, Meldia H, Rommy Hadiarto Mangunnegoro Harkunti P. Rahayu Harkunti P. Rahayu, Harkunti P. Huseiny, Mohammad Iqbal Idham Riyando Moe Idham Riyando Moe Imani, Rafki Irfan Sudono Iwan Kridasantausa (alm.) Joko Nugroho Kedafota, Fahrul Kesuma, Tri Nugraha Adi Khilmi Zain Kholik, Almira Abdul Kirana, Pratita Hana Ledowikj, Felix Joel Lestari, Ovi M. Bagus Adityawan, M. Bagus Masri nur Sultan Mellivera, Avis Mochamad Mardi Marta Dinata Mochammad Ridwan Muhammad Rizki Purnama Muhammad Syahril Badri Kusuma, Muhammad Syahril Badri Muhammad, Al Nana Nasuha Djuhri Nofriadirman Novintasari Nadeak Nurmaulia, Sella Lestari Permana, Salsa Alfadhila Pratama, Maryo Inri Prima Putra, Kahar Halim Purnama, Vicky Candra Rahayu, Harkunti Pertiwi Rasmiaditya Silasari Rasmiaditya Silasari Rohman, Mutiara Indah Nur Sarah Abighail siti rodiah Sri Legowo W. D Sri Legowo Wignyo Darsono Suardi Natasaputra Sultan, Masri nur Tia Setiawati Tia Setiawati Waluyo Hatmoko Wicaksono, Rofidzias Siswo Widodo Widodo Widyaningtias Widyaningtias, Widyaningtias Widyaningtyas, Widyaningtyas Wisanggeni, Dimas H. Yakti, Bagus Pramono Yetrina, Mutiara Zain, Khilmi Zefri Yenni