Influence analysis of peak rate factor in the flood events’ calibration process using HEC–HMS

Cahyono, Christian; Adidarma, Wanny K

doi:10.1007/s40808-019-00625-8

Cited by 18 publications

(4 citation statements)

References 3 publications

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“…Determining the correct water level for the return period requires tuning and validating the hydrological model to ensure that the water level is correct. [13]. The first step in hydrological analysis is to calibrate the hydrological model.…”

Section: Hydrologic Analysismentioning

confidence: 99%

Flood Analysis on Lake Tempe, South Sulawesi

Cahyono,

Juliastuti,

Setyandito

2024

IOP Conf. Ser.: Earth Environ. Sci.

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Tempe Lake is one of the largest lakes in Wajo, Sopen, and Siddenreng Rappang in southern Sulawesi. Lake Tempe is the reservoir of his five major rivers: Bilokka, Lidaratangu, Masaka, Siddenreng, Bira and Walane. The lake offers many benefits to the community such as securing water resources, flood control, agriculture, fishing, and tourism. However, approximately 20–40 cm of silt is produced annually. This can cause flooding in the surrounding areas. Therefore, the restoration of Lake Tempe is necessary to mitigate flooding caused by continuous sedimentation. The Department of Public Works and Housing has developed a phased dredging plan to improve the capacity of Lake Tempe. Later, as no disposal sites were available, dredged materials were used to build several artificial islands along the perimeter of the lake. After the reconstruction project was completed, two major floods occurred, overtopping embankments. Therefore, the design analysis of embankments is required. Analysis indicates that two flood events occur, with a 20-year return period flood and a 50-year return period flood at elevations of 8.36 m and 9.2 m. From hydraulic analysis it is found that flood embankment height of 10 m is overtopped by water level of total 9.56 m and 10.4 m respectively because of wave run up. For a 20-year return period, there is an indication that slope stability and settlement problems affect flood events. It can be concluded that flood problems occur because of extreme events and the failure of flood embankments due to overtopping.

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Section: Hydrologic Analysismentioning

confidence: 99%

Flood Analysis on Lake Tempe, South Sulawesi

Cahyono,

Juliastuti,

Setyandito

2024

IOP Conf. Ser.: Earth Environ. Sci.

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“…Setelah itu nilai parameter dari tiga komponen hidrologis kehilangan air (Losses), hidrograf satuan sintetik (Transform), dan aliran dasar (Baseflow) dimasukkan. Berdasarakan penelitian sebelumnya pada DAS Selorejo, nilai ketiga komponen di atas sudah ada dan menunjukkan hasil yang cukup baik [8]. Berikut ditunjukkan nilai parameter dari masing-masing komponen dan hasil kalibrasi nya.…”

Section: Gambar 4 Pemodelan Hec-hms Das Selorejounclassified

Evaluasi Kinerja Tampungan Waduk Selorejo Menggunakan Perangkat Lunak HEC-HMS

Cahyono

Susetyo

Herawati

et al. 2021

SAINTIS

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[ID] Permasalahan banjir merupakan permasalahan pengelolaan air yang sering terjadi di Indonesia. Untuk mengatasi permasalahan tersebut dibuat sebuah struktur yaitu waduk yang berfungsi sebagai pengendali banjir. Namun seiring waktu tampungan waduk akan semakin menurun akibat adanya akumulasi sedimen yang terbawa oleh air sungai yang masuk ke dalam waduk dan mengendap. Sehingga diperlukan evaluasi kinerja tampungan waduk tersebut, Permasalahan ini juga dialami oleh Waduk Selorejo yang terletak di Kabupaten Malang. Untuk melakukan evaluasi kinerja tampungan waduk digunakan bantuan perangkat lunak HEC-HMS yang dapat mensimulasikan debit banjir yang masuk beserta elevasi tampungan waduk. Berdasarkan hasil analisis tampungan Waduk Selorejo mampu untuk mengendalikan banjir periode ulang desain awal nya yaitu periode ulang 1000 tahun. Selain itu Waduk Selorejo juga mampu menampung debit banjir Probable Maximum Flood (PMF) apabila muka air awal waduk diturunkan sampai elevasi +605 m. [EN] Flood problem is a water management problem that often occurs in Indonesia. To overcome this problem, a structure is created, namely DAM that functions as a flood controller. However, over time the reservoir storage will decrease due to the accumulation of sediment carried by river water that enters the reservoir. So it is necessary to evaluate the performance of the Rervoir storage. This problem is also experienced by the Selorejo DAM which is located in Malang Regency. To evaluate the performance of the reservoir storage, the help of HEC-HMS software is used which can simulate the incoming flood discharge along with the elevation of the reservoir. Based on the analysis, the Selorejo DAM is able to control the flood of its initial design period which is the 1000-year return period. In addition, the Selorejo Reservoir is also able to accommodate the Probable Maximum Flood (PMF) flood discharge if the initial water level of the reservoir is lowered to an elevation of +605 m.

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“…In order to generate a flood hydrograph for use in this analysis, the rainfall-runoff transformation approach requires the use of three additional models: the loss method, the transformation method, and the base flow method. In the application, numerous computer models, including HEC-HMS, use the rainfall-runoff transformation method to perform flood analysis [8,9]. HEC -HMS is a computer program that can model the complete hydrological cycle (rain transformation) and routing processes in watersheds.…”

Section: Introductionmentioning

confidence: 99%

Flood Mapping Using HEC-RAS and HEC-HMS: A Case Study of Upper Citarum River at Dayeuhkolot District, Bandung Regency, West Java

Wijaya,

Wijayanti

2024

IOP Conf. Ser.: Earth Environ. Sci.

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Dayeuhkolot district is an area within Citarum River watershed that often experiences flood during the rainy season due to overflow discharge. This research identifies the flood area by using hydrodynamic modeling in Dayeuhkolot district. The model utilized satellite rainfall data. The hydrodynamic modeling of HEC-RAS 5.0.5 and HEC-HMS simulate the flow regimes and the hydrological characteristics in the study area, respectively. The results reveal that the increase in water level in two river tributaries within Citarum River watershed had caused the flooding at Dayeuhkolot district. Furthermore, the percentage of flood areas with low, medium, and high flood risk is 34.7%, 34.5%, and 30.8%, respectively. The flood map developed in this study could support the establishment of a strategy for managing the floodplain area and flood-affected areas.

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Influence analysis of peak rate factor in the flood events’ calibration process using HEC–HMS

Cited by 18 publications

References 3 publications

Flood Analysis on Lake Tempe, South Sulawesi

Flood Analysis on Lake Tempe, South Sulawesi

Evaluasi Kinerja Tampungan Waduk Selorejo Menggunakan Perangkat Lunak HEC-HMS

Flood Mapping Using HEC-RAS and HEC-HMS: A Case Study of Upper Citarum River at Dayeuhkolot District, Bandung Regency, West Java

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