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All Journal Jurnal Mahasiswa Jurusan Teknik Pengairan Journal of Innovation and Applied Technology Jurnal Teknik Pengairan: Journal of Water Resources Engineering REKAYASA Teras Jurnal Jurnal Penelitian Pendidikan IPA (JPPIPA) Civil and Environmental Science Journal (CIVENSE) AGROMIX JPPM (Jurnal Pengabdian dan Pemberdayaan Masyarakat) International Journal of Educational Management and Innovation (IJEMI) Jurnal Pengabdian Masyarakat untuk Negeri (UN-PENMAS) Jurnal Kesehatan dan Pengelolaan Lingkungan Jurnal Teknik Sumber Daya Air Jurnal Teknologi dan Rekayasa Sumber Daya Air
Rahmah Dara Lufira
Universitas Brawijaya
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Optimasi Model Natural Rural Electrical Cooperation Agency Untuk Memprediksi Debit Aliran Bulanan di Sub DAS Lesti Suhartanto, Ery; Andawayanti, Ussy; Dara Lufira, Rahmah; Utami, Rizki Tri
Rekayasa Vol 18, No 3: Desember, 2025
Publisher : Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/rekayasa.v18i3.31267

Abstract

Climate change and land use change in the Lesti Sub-DAS increase the risk of flooding and land degradation, requiring reliable flow predictions to support water resource management. However, the performance of the NRECA model in predicting monthly flows in this region is still not optimal because calibration-validation strategies and the use of environmental parameters have not been systematically studied. This study optimizes the NRECA model to predict monthly discharge for the period 2011-2020 in the Lesti sub-watershed by calibrating the GWF and PSUB parameters based on rainfall, evapotranspiration, and watershed morphometry data in three data division scenarios (70:30, 80:20, and 90:10 for calibration:validation). The results show that all scenarios produce excellent performance with calibration Nash-Sutcliffe Efficiency (NSE) values between 0.99491-0.99561 and correlation coefficients (R) between 0.99746-0.99785, while validation yielded NSE values between 0.89112-0.97227 and R between 0.49959-0.81520. The best scenario was obtained with a combination of 8 years of calibration and 2 years of validation, with NSE = 0.99561 and R = 0.99785 at the calibration stage, and NSE = 0.97227 and R = 0.81512 at the validation stage, indicating the model's ability to consistently represent monthly discharge variations. The similarity between the model discharge pattern and observations during the base and peak flow periods indicates that GWF optimization specifically improves the representation of base flow response. This study contributes by presenting an optimization-based calibration-validation scheme for the NRECA model, which can be used as a reference in conservation planning and reservoir operation management in watersheds with limited data.
Co-Authors A.A. Ketut Agung Cahyawan W Adnan, Muhammad Fawwaz Aydin Adrianu, M Nafian Ahmad, Dicky Aldi Pamungkas Aldila Putri Rahayu Andawanti, Ussy Andawayanti, Ussy Anggun Setyaningrum Apritaputra, Rayza Widyadhana Arif, Khumaira Aufa Hanan A Azhar Adi Darmawan Beselly Putra, Sebrian Mirdeklis Denny Ahmad Fauzi Dewanti, Wahyuning Donny Harisuseno Emma Yuliani Ery Suhartanto Farliani, Danisa Putri Fitriana, Firda Maya Fitriani, Naila Zahro Frinandy, Alvin Habib Haidar, Fauzan Hamdani, Octasub'hi Ramadhan Haribwowo, Riyanto Hawari, Hirzi Hidayah, Mita Nur Ismoyo, Janu Janitra, Ezra Jauhari, M. Reza Kamila, Orin Syakira Karunianto Dhalame, Sammy Caesar Ken Diah Mangar Nastiti Kevin Caesar Perdhana, Dewana Nugraha Laksono Trisnantoro Larasati, Adinda Sylsi Lendi Dwi Pranoto Lilik Zuhriyah Lily Montarcih Limantara Linda Prasetyorini Lukman Hakim M. Amar Sajali M. Janu Ismoyo Moch Rizky Mohammad Bisri Mohammad Bisri Muhhammad Alfyan Rachmana Putra Napitupulu, Nehemia Napitupulu, Ruth Erditha Nastiti, Ken Diah Mangar Novansyah Fajri Nurhaliza, Salma Nurwijayanti Pambudi, Arya Danang Permana, Candra Dwi Pitojo Tri Juwono Pratama, Rizki Ramadani Pratama, Rizki Ramadhani Putri, Angelina Satya Qomarul Huda, Qomarul Rahayu, Aldila Putri Rayhan Yasmine Fathika Riyanto Haribowo Runi Asmaranto Sandi, Yohan Alfanii Sandy, Dina Yunita Santi Sari Sari, Devi Ratna_Resita Satwika Desantina Muktiningsih Satwika Desantina Muktiningsih Satwika Desantina Muktiningsih Satwika Desantina Muktiningsih, Satwika Desantina Setyowati, Elfira Dyah Shevananda Arifianto Sofriansyah, Rafi Satria Sri Wahyuni Suhardjono Suhardjono Suhartanto, Ery Sumiadi Sumiadi, Sumiadi Suwanto Marsudi Syah Putra, M. Raihan Ussy Andawayanti Ussy Andawayanti Ussy Andawayanti Utami, Rizki Tri Very Dermawan Widandi Soetopo