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Article

A Framework of Dam-Break Hazard Risk Mapping for a Data-Sparse Region in Indonesia

Center of Water Resources Engineering, Department of Civil Engineering, Parahyangan Catholic University, Jl. Ciumbuleuit 94, Bandung 40141, Indonesia
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Academic Editors: Wolfgang Kainz and Raffaele Albano
ISPRS Int. J. Geo-Inf. 2021, 10(3), 110; https://doi.org/10.3390/ijgi10030110
Received: 24 November 2020 / Revised: 26 January 2021 / Accepted: 8 February 2021 / Published: 26 February 2021
This paper introduces a new simple approach for dam-break hazard mapping in a data-sparse region. A hypothetical breaching case of an earthen dam, i.e., the Ketro Dam in Central Java, (Indonesia) was considered. Open-access hydrological databases, i.e., TRMM and CHIRPS, were collected and compared with the rainfall ground station data to ensure data quality. Additionally, the 3-h rainfall distribution of the TRMM database was employed and validated with the measured data to establish the 24-h rainfall distribution of the probable maximum precipitation. The probable maximum flood discharge was computed with the SCS method, and the reservoir routing computation was conducted to determine the possible breaching mechanisms. The result shows that the Ketro Dam proves safe against overtopping, and thus only the piping mechanism has been taken into consideration. Using the breaching hydrograph, the open-access Digital Elevation Model MERIT Hydro, and the high-performance shallow water model NUFSAW2D, the flood propagation to the downstream part of the dam was simulated, enabling fast computations for different scenarios. The quantification of the susceptibility rate of urban areas was eased with overlay analysis utilizing InaSAFE, a plugin for the QGIS model. This study shows that even for a data-sparse region, the recent open-access databases in terms of hydrological and hydraulic aspects may be used to generate a dam-break hazard map. This will benefit the related stakeholders to take proper action to reduce the loss of life. View Full-Text
Keywords: dam-break; data-sparse region; hazard mapping; ketro dam; NUFSAW2D dam-break; data-sparse region; hazard mapping; ketro dam; NUFSAW2D
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MDPI and ACS Style

Yudianto, D.; Ginting, B.M.; Sanjaya, S.; Rusli, S.R.; Wicaksono, A. A Framework of Dam-Break Hazard Risk Mapping for a Data-Sparse Region in Indonesia. ISPRS Int. J. Geo-Inf. 2021, 10, 110. https://doi.org/10.3390/ijgi10030110

AMA Style

Yudianto D, Ginting BM, Sanjaya S, Rusli SR, Wicaksono A. A Framework of Dam-Break Hazard Risk Mapping for a Data-Sparse Region in Indonesia. ISPRS International Journal of Geo-Information. 2021; 10(3):110. https://doi.org/10.3390/ijgi10030110

Chicago/Turabian Style

Yudianto, Doddi, Bobby M. Ginting, Stephen Sanjaya, Steven R. Rusli, and Albert Wicaksono. 2021. "A Framework of Dam-Break Hazard Risk Mapping for a Data-Sparse Region in Indonesia" ISPRS International Journal of Geo-Information 10, no. 3: 110. https://doi.org/10.3390/ijgi10030110

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