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Water Balance Analysis and Embung-Long Storage Planning as a Technical Irrigation Solution for Rainfed Paddy Fields in Padang Kunik Village, Kuantan Singingi Regency Desvi Mardiah Darma; Sri Wahyuni; Tri Budi Prayogo
Jurnal Penelitian Pendidikan IPA Vol 12 No 7 (2026)
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v12i7.15850

Abstract

Rainfed paddy fields relying entirely on rainfall are vulnerable to seasonal water deficits and limited to one planting season per year (Cropping Index/CI 100). This study analyzed the water balance of 77 ha of rainfed paddy land in Padang Kunik Village, Kuantan Singingi Regency, and formulated a technical storage solution to improve irrigation water availability. Water availability was calculated using the Simple Water Balance method with 20 years of rainfall data (2006–2025) from three rain gauges, while irrigation demand followed KP-01 guidelines. The Ripple (mass-curve) method determined the required Effective Storage Capacity. Results showed deficits in seven separate periods, with a cumulative peak deficit of 140,647.00 m³ in April I and a total required storage volume, after accounting for evaporation, seepage, and sediment losses, of 175,077.41 m³. A combination of an embung (172,800.00 m³ on 4.3 ha of non-productive land) and 4,562 m of long storage was planned, yielding a total volume of 177,362.00 m³, or 101% of the requirement, distributable to the paddy fields by gravity given the elevation difference. The proposed system is technically feasible to eliminate seasonal deficits and could raise the Cropping Index from CI 100 to CI 200.
Co-Authors Achfas Zacoeb Ahmad Efendi Aji Hendra Sarosa Al zamzami, Ilham Misbakudin Amin, Abd Aziz Andi Kurniawan Andre Primantyo Hendrawan Ardia Trianita, Dinda Aufa, Muhammad Shidqy Awfiyaa, Husna Nadhira Awfiyaa, Husna Nadhira Ayisya Cindy Harifa Azzhura, Fahrunnisa Bahrudin, Moh. Zainal Desvi Mardiah Darma Dian Chandrasasi Donny Harisuseno Donny Harisuseno Dwi Lestari, Febby Sekar Dwi, Yogita Ayu Emma Yuliani Fahmi, Moh. Aziizun Fajaruddin, Abdul Harist Fidari, Jadfan Shidqi Hakim, Muhammad Naufal hari siswoyo Heri Suprijanto Hutama, Ageng Rizky Inadhi, Kania Laksita Ismu Rini Dwi Ari Juziwijaya, Dudiman Kevin Devara Khabib, Muhammad Lukman Kianendra, Reza Kurniawan, Decka Emeraldi Lailatul Mukarromah, Lailatul Lily Montarcih Limantara M. Janu Ismoyo Maarif, Fandi Ahmad Mahyudin Mahyudin Maulidya, Lia Nur Izza Moch. Agus Choiron Moehammad, Khibar Syiar Moh. Sholichin Mohammad Bisri Mukti, Galih Teja nalurita, sari NEPRIYANA, Elfita Nugroho, Bimantio Fariz Nugroho, Faishal Dary Nugroho, Fajar Unggul Nur A. A, Richarta Vichotama Pradana, Ravi Pramudia, Zulkisam Prasetyaningrum, Ndaru Prima Hadi Wicaksono Purwanto, Harjuna Arif Puteriana, Shintya Agustien Putra Ramadhani, Adhinda Dwi Putranto, Yoyok Dwi Rafif, Hanif Rahayu, Kurnia Yuliyanti Ranteta'dung, Imanuel Three Richa, Vicky Ataki Rini Wahyu Sayekti Rispiningtati Rispiningtati Riyanto Haribowo Rizaldy, Muhammad Fahmi Rusardi, Olda Fadhilah Aprilia Sahdini, Arfin Putri Salimah, Ghaida Nurul Saragih, Nadhirah Nurul Saleha Sari Rahmawati, Sari Semuel J. Ch. Ahab, Semuel J. Ch. Setiyowati, Yunita Ayu setyawan, satriyo ardhi Setyono, Hadi Satria Shafiya, Adristi Sholichin, Moh Simanjuntak, Yogi Ricardo P Siregar, Yoan Nathalia Soemarno Soemarno Solichin, Moch Sri Wahyuni Sri Wahyuni Sri Wahyuni Sumule, Ahimsa Rama Pagayang Susanti Susanti Sutikno Sutikno Ussy Andawayanti Very Dermawan Yasnuar Muntaha Yudianto, Engelbertus Fajar