Impounding Duration Model Development at the Jlantah Dam, Karanganyar Regency, Central Java Province, Indonesia

Authors

  • Harimukti Rosita Rahmawati Department of Water Resources Engineering, Faculty of Engineering, University of Brawijaya, Malang, Indonesia
  • Pitojo Tri Juwono Department of Water Resources Engineering, Faculty of Engineering, University of Brawijaya, Malang, Indonesia
  • Lily Montarcih Limantara Department of Water Resources Engineering, Faculty of Engineering, University of Brawijaya, Malang, Indonesia
  • Emma Yuliani Department of Water Resources Engineering, Faculty of Engineering, University of Brawijaya, Malang, Indonesia
Volume: 15 | Issue: 5 | Pages: 26852-26860 | October 2025 | https://doi.org/10.48084/etasr.12161

Received: 15 May 2025 | Revised: 15 July 2025 and 22 July 2025 | Accepted: 27 July 2025 | Online: 7 August 2025


Corresponding author: Lily Montarcih Limantara

Abstract

Upon the completion of dam construction and before its operation, an initial impounding phase of the reservoir takes place. The latter requires careful planning and observation. A predictive model for impounding duration has been developed to provide more accurate predictions, facilitating more effective monitoring and the control of the increasing water level elevation rate. Its application requires an implementation phase that involves applying a reservoir impounding model by formulating a parabolic equation that describes the relationship between the time and daily water elevation. This research investigated the development of the prediction model of impounding duration. The deployed methodological approach involves statistical analysis to test the conformity of the model results with the field data, utilizing statistical conformity criteria. This research was conducted at the Jlantah Dam located in Karanganyar Regency, Central Java Province, Indonesia, which was chosen as the site for the model development. A coefficient of determination (R2) close to 0.98 was obtained between the planned curve of the time–elevation relationship and the observed daily elevation data during the impounding process at the Jlantah Dam. Therefore, the developmental stages of this study's findings can serve as a reference for a better application of the initial reservoir impounding duration model.

Keywords:

model, initial impounding, formulation

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How to Cite

[1]
H. R. Rahmawati, P. T. Juwono, L. M. Limantara, and E. Yuliani, “Impounding Duration Model Development at the Jlantah Dam, Karanganyar Regency, Central Java Province, Indonesia”, Eng. Technol. Appl. Sci. Res., vol. 15, no. 5, pp. 26852–26860, Oct. 2025.

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Copyright (c) 2025 Harimukti Rosita Rahmawati, Pitojo Tri Juwono, Lily Montarcih Limantara, Emma Yuliani

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