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Journal : Journal of Geoscience, Engineering, Environment, and Technology

Calibration of the Water Balance Model for the Upper Cimanuk Catchment Area for Raw Water Supply Permana, Sulwan; Susetyaningsih, Adi
Journal of Geoscience, Engineering, Environment, and Technology Vol. 9 No. 04 (2024): JGEET Vol 09 No 04 : December (2024)
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/jgeet.2024.9.04.18059

Abstract

The main task of PDAM Tirta Intan Garut Regency is to manage raw water into clean water for customers. The management of raw water supply in Bayongbong District for the community still relies on springs with a gravity system, deep well pumps and rivers. The flow of the Cimanuk River in Bayongbong District can be used to provide raw water. Four rainfall stations are used. Average rainfall is calculated using the Thiessen method. The raw water collection point does not have a automatic water level recorder (AWLR), so it is necessary to create a model to obtain the discharge at the collection point. The model used is the water balance model from F.J. Mock. Calibration of model parameters was carried out on observed discharge at Cimanuk-Bayongbong AWLR and Cimanuk-Bojongloa AWLR. To test the reliability of the model, NSE and RMSE values ​​were used. The NSE and RMSE values ​​in the Cimanuk-Bayongbong catchment area are 0.515 and 3.615 and Cimanuk-Bojongloa are 0.593 and 4.813. The results of the model parameter calibration are used to calculate the discharge at the collection point. The calibration result ​​at the collection site are exposed surface 50%, infiltration coefficient 0.5: recession coefficient 0.35: catchment area characteristic factor 10%; and soil moisture capacity 200 mm. The dependable flow is calculated based on Q90% probability, water availability in July, August, September and October is 0.078 m3/s; 0.025 m3/s; 0.035 m3/s; and 0.025 m3/s. Water availability in that month is smaller than the discharge requirement for the next five and ten years, namely ranging from 0.134 m3/s to 0.168 m3/s and 0.145 m3/s to 0,182 m3/s.
Co-Authors AA Sudharmawan, AA Adi Susetyaningsih Ahmad Tavip Baiturahman Al-Husein, Fajar Alfaruq, Muhammad Haikal Alwan Fauzan, Muhamad Aminah, Siti Nur ANANTA, ASTI Andriani, Ai Dini Anwarushofa, Whina Anzilal Fauji Aprilianti, Mega Arif, Zaenal Azziz, Abdal Bayan, Alamahul Dadang Permana Eko Walujodjati Fadhil, Raja Naufal Fahril Sidik Alfarizi Fardiansyah, Bagas Farhani, Siti Aulia Faridah, Nayla Nur Fatah, Muhamad Abdu Fathir, Mirza Fauzan, Azka Mutsla Fijannatika, Nazma Naya Firdaus Irawan, Ferdy Firdausa, Muhamad Arga Firzatullah, Belva Prana Fitriyadi, Adi Giandhani, Mochammad Rizky Gunawar, Agun Hadi, Muhamad Rizal Nurul Halimah, Silfi Nur Hantari, Anjas Ninda Hariri, Rapi Muhamad harom, Ardi Nur Hermawan, Tizar Azjah Hilmayanti, Hilmayanti Hudaedi, Muthi’ah Ibrahim, Galih Imamudin Imamudin Jamami, Yadziz Siddik Al Khaerunisa, Nisrina Komalasari, Amelia Citra Mulya Kristiawan, Diky Kusumah, Desty Rahmawati LINDAWATI M. Sri Rezeki, Pamella M.Miskun Arrihussalam Maelani, Rega Mardianti, Fira Maulana, Mochamad Dilla Maulina, Wina Senja Moch. Galdiaz Nugraha Prawira Mubarok, Abil Miftahul Muhammad Ali Faishal Muhammad Ridho Muhammad Suryadindin Muhammad, Faiz Mahatir Muharam, Muhammad Faisal Mulyana, Subhan Munawar, Arby Muhyi Muthia Mutmainah Aprinelia Nazid, Sa’dan Frima M Nazwa Tiara Herdiani Nenti Fajriyanti, Neng Nisa, Salma Aulia Nugraha, Mochammad Suva Nugraha, Yogi Nurahman, Zamzam Nuralim, Taslim Nurcinta Asih Nurdin, Almiansyah Nurfauziah, Hanifah Nurhakim, Rizal Nurlatifah, Sarah Nursalim, Fathir Miftah Prananta, Azfa Pratama, Aditya Ramdhani Prayogi, Depi Purnama, Alpin Putri, Icha Aulia Rahayu, Puspa Arum Rahma Rohimah Hinaffisah Ramadhan, M. Zilhan Salman Ramadhan, Muhamad Alfito Dwi Ramdani, Junaedi Ramdhani, Tio Rian Hidayatullah Rinjani, Nabila Putri Rismansyah, Tendi Rizal, Muhamad Saepul Rizki Anugrah Munawar Rizky, Muhammad Naufal Rohimat Rohman, Asep Abdul Rosidin, Ahmad Ruspa, Rena Ryan Ardiansyah Saepul Rohman, Taupik Sandi Dzulfikar Sanusi, Muhamad Anwar Saputra, M. Sandi Kurniawan Sastradipraja, R Muhammad Arya Fajar Saumi, Ira Nurachma Shaffan, Yusri Fisabili Sifa Nur Maisah Siti Rohmah Suhendi Sukma, Ersa Hermalia Sulastri, Dewi Sulton, Restu Suparman, Tegar Radiansyah Syafe'i, Abdullah Syifa, Syifa Khoirunnisa Yogaswara, Dendi Yulianti, Jihan Yuningsih, Siti Yuni Zaman, Muhammad Badru