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Nevada. J. M. Nanulaitta
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Journal : variabel

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Management of Annual Water Allocation for Irrigation Water Needs in the River Watershed of Kobi-Central Maluku Obednego D. Nara; Ganisa E. Salamena; Nevada J.M. Nanulaitta
Variabel Vol 9, No 1 (2026): APRIL 2026
Publisher : STKIP Singkawang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26737/var.v9i1.8369

Abstract

Professional water management is essential to ensure water availability, given its critical importance. In Eastern Indonesia, following the era of rice self-sufficiency, communities have sought to maintain their food supplies and have become accustomed to consuming rice as a staple food. This study aims to describe irrigation water management in the Kobi District of Central Maluku Regency, Eastern Indonesia. The National Rural Electric Cooperative Association (NRECA) method was selected for the analysis, considering three water availability scenarios based on rainfall probability: Wet Scenario (Q30%): High rainfall, Normal Scenario (Q50%): Moderate rainfall, Dry Scenario (Q80%): Low rainfall. In the event of a water deficit, allocations are adjusted according to a priority scale. The correlation (r) between measured water discharge data and simulation results was 0.647, indicating a moderate relationship. The RMSE (mean error) is 0.858, which indicates that this model was quite good. The analysis results revealed variations in water discharge of each scenario for Kobi Irrigation Area and Kobi Watershed. In the Kobi Irrigation Area, the highest discharge occurred in wet conditions, which was 18.42 m³/s in May, while the lowest discharge occurred in dry conditions, which was 1.17 m³/s in May. In the Kobi watershed, the highest discharge occurred in wet conditions, which was 16.75 m³/s in May, while the lowest discharge occurred in dry conditions, which was 0.15 m³/s in May.
Co-Authors Agustinus O. Lopuhaa Alexander Andaria Patty Annafiyah Annafiyah Basri Katjo Berthy Pelasula Berthy Pelasula Clara Sekeroney Cley Talkua Erwin B Pattikayhatu Erwin Patikayhattu F Demmatacco F. Demmatacco Faizatur Rohmah Frederick Dematacco Frederik Demmatacco Fredrick Demattacco Fredrik Demataco Ganisa E. Salamena Graciadiana. I. Huka H. S. Latumaerissa Helen Riupassa Hendry de Fretes Hendry Y. Nanlohy Herman Tjolleng Taba Hermon Latumaerissa Hermon. Latumaerissa Ike Dayi Febriana Imam A Hanifah Josef Matheus Josef Matheus Josef Matheus Julian Salakory Kelian, Nur Aisyah Utami Laily Ulfiyah Lasamahu, Stevanno B D Latuconsina, Muhammad Jen Leatemia, Josua M. Leatemia, Meiti Lekatompessy, Roy R. Lilipaly, Eka Rahmat Mahayani Anthonio Putera Loppies, Leslie S Lukman Hadiwijaya Malakauseya, J. J Marthina Mini Masaki Yamaguchi Matheus, J Meiti Leatemia Mohammad Anas Fikri Muhammad Jen Latuconsina Nanse H. Pattiasina Nur Aisyah Utami Kelian Obednego D. Nara Patikayhattu, Erwin Pattikayhatu, Erwin Bravor Pelasula, Berthy Picanussa, Jovancko. S. S. R.R Lekatompessy R.R. Lekatompessy Ramadhan, Fahri Ratna Ayu Dewi Ratna Ayu Pawestri Kusuma Dewi Rey Joy Toding Padang Roy R Lekatompessy Roy R. Lekatompessy Semuel M.J.S Tuny Steanly R.R. Pattiselanno