Pengaruh aliran sungai panasen terhadap proses sedimentasi di Danau Tondano

Authors

  • Liany Amelia Hendratta Program Studi Teknik Sipil, Universitas Sam Ratulangi, Manado, Sulawesi Utara, Indonesia
  • Arthur Haris Thambas Program Studi Teknik Sipil, Universitas Sam Ratulangi, Manado, Sulawesi Utara, Indonesia
  • Lusia Manu Program Studi Ilmu Kelautan, Universitas Sam Ratulangi, Manado, Sulawesi Utara, Indonesia
  • La’la Monica Program Studi Teknik Sipil, Universitas Sam Ratulangi, Manado, Sulawesi Utara, Indonesia

DOI:

https://doi.org/10.22225/pd.13.2.10720.131-137

Keywords:

flood, HEC-HMS, Lake Tondano, sedimentation, sediment-laden-flow

Abstract

Land use changes and inappropriate land use in the Panasen watershed cause sedimentation in Lake Tondano. The influence of sediment-laden flow on the sedimentation process is still a problem that needs to be studied. The occurrence of flooding in the downstream part of the river due to the process of river silting is a problem that has an impact on economic losses, environmental problems and even unresolved social conflicts. This study aims to obtain the factors causing flooding by evaluating the capacity of the Panasen river cross-section in the downstream part and analyzing the influence of the Panasen River sediment flow on the sedimentation process in Lake Tondano. The study was conducted through field observations in the form of river geometry measurements and sediment flow sampling. Secondary data, namely topographic maps, rainfall data and measured discharge data were obtained from related agencies. Various analyses carried out were hydrological analysis, hydraulic analysis and sedimentation analysis. The hydrological analysis used maximum daily rainfall data obtained from the Noongan rainfall station and measured river discharge from the Noongan River AWLR. The magnitude of flood discharge using the HEC-HMS model with calibrated parameters for various return periods of 2, 5, 10, 25, 50 and 100 years were obtained at 50.2 m3/sec, 71.6 m3/sec, 82.1 m3/sec, 91.8 m3/sec, 97.2 m3/sec and 101.4 m3/sec. From the hydraulic analysis, it was obtained that under Q100 and lake tides, all river segments were unable to accommodate flood discharge. The flood water level (overflow) was at 1.2 - 3.1 meters and tended to occur towards the right river bank. The amount of sediment transport was determined after obtaining the dissolved sediment content, which was 6.16 gr/m3, resulted in an average increase in sediment volume to the lake for 30 years of 3,215,104.7 m³ or a thickness of 72.15 mm. The results of the study showed that the amount of sediment entering the lake was quite large, so that management efforts were needed in the Panasen River watershed, namely in the form of land conservation measures and determining appropriate land use.

References

Aerts, J. C. J. H., & Botzen, W. J. W. (2011). Climate change impacts on pricing long-term flood insurance: A comprehensive study for the Netherlands. Global Environmental Change, 21(3), 1045–1060. https://doi.org/10.1016/j.gloenvcha.2011.04.005

Alam, M., Emura, K., Farnham, C., & Yuan, J. (2018). Best-Fit Probability Distributions and Return Periods for Maximum Monthly Rainfall in Bangladesh. Climate, 6(1), 9. https://doi.org/10.3390/cli6010009

Ardiansyah, M., Nugraha, R. A., Iman, L. O. S., & Djatmiko, S. D. (2021). Impact of Land Use and Climate Changes on Flood Inundation Areas in the Lower Cimanuk Watershed, West Java Province. Jurnal Ilmu Tanah Dan Lingkungan, 23(2), 53–60. https://doi.org/10.29244/jitl.23.2.53-60

Daramola, J., Adepehin, E. J., Ekhwan, T. M., Choy, L. K., Mokhtar, J., & Tabiti, T. S. (2022). Impacts of Land-Use Change, Associated Land-Use Area and Runoff on Watershed Sediment Yield: Implications from the Kaduna Watershed. Water (Switzerland), 14(3), 1–23. https://doi.org/10.3390/w14030325

Farid, M., Mano, A., & Udo, K. (2012). Urban Flood Inundation Model for High Density Building Area. Journal of Disaster Research, 7(5), 554–559. https://doi.org/10.20965/jdr.2012.p0554

Ghimire, R., Ferreira, S., & Dorfman, J. H. (2015). Flood-induced displacement and civil conflict. World Development, 66, 614–628. https://doi.org/10.1016/j.worlddev.2014.09.021

Ginting, S., & Putuhena, W. M. (2017). Hujan rancangan berdasarkan analisis frekuensi regional dengan metode tl-moment. Jurnal Sumber Daya Air, 12(1), 1–16. https://doi.org/10.32679/jsda.v12i1.160

Hapsari, R. I., & Zenurianto, M. (2016). View of Flood Disaster Management in Indonesia and the Key Solutions. American Journal of Engineering Research (AJER), 5, 140–151.

Kamase, M., Hendratta, L. A., & Sumarauw, J. S. F. (2017). Analisis Debit Dan Tinggi Muka Air Sungai Tondano Di Jembatan desa Kuwil Kecamatan Kalawat. Jurnal Sipil Statik, 5(4), 175–185.

Li, J., & Shi, W. (2015). Effects of alpine swamp wetland change on rainfall season runoff and flood characteristics in the headwater area of the Yangtze River. Catena, 127, 116–123. https://doi.org/10.1016/j.catena.2014.12.020

Liu, W., Shi, C., Ma, Y., Li, H., & Ma, X. (2021). Land use and land cover change-induced changes of sediment connectivity and their effects on sediment yield in a catchment on the Loess Plateau in China. Catena, 207(August), 105688. https://doi.org/10.1016/j.catena.2021.105688

Mandal, S., & Choudhury, B. U. (2015). Estimation and prediction of maximum daily rainfall at Sagar Island using best fit probability models. Theoretical and Applied Climatology, 121(1–2), 87–97. https://doi.org/10.1007/s00704-014-1212-1

Morrison, A., Westbrook, C. J., & Noble, B. F. (2018). A review of the flood risk management governance and resilience literature. Journal of Flood Risk Management, 11(3), 291–304. https://doi.org/10.1111/jfr3.12315

Quirogaa, V. M., Kurea, S., Udoa, K., & Manoa, A. (2016). Application of 2D numerical simulation for the analysis of the February 2014 Bolivian Amazonia flood: Application of the new HEC-RAS version 5. Ribagua, 3(1), 25–33. https://doi.org/10.1016/j.riba.2015.12.001

Rares, J. P., Sholichin, M., & Yuliani, E. (2016). Analisis Pengelolaan Kualitas Air Di Perairan Danau Tondano. Jurnal Teknik Pengairan, 7(2), 225–235.

Sorey, T. D., Bisri, M., & Sisinggih, D. (2016). Kajian Penanganan Sedimentasi Danau Tondano. Jurnal Teknik Pengairan, 7(2), 259–267.

Upomo, T. C., & Kusumawardani, R. (2016). Pemilihan Distribusi Probabilitas Pada Analisa Hujan Dengan Metode Goodness Of Fit Test. Jurnal Teknik Sipil Dan Perencanaan, 18(2), 139–148. https://doi.org/10.15294/jtsp.v18i2.7480

U.S. Army Corps of Engineers. (2016). HEC-RAS River Analysis System Hydraulics Refrence Manual HEC-RAS 5.0. . Davis: Hydrologic Engineering Center.

Wantasen, S., & Luntungan, J. (2019). Water Resources Management of Lake Tondano in North Sulawesi Province. IOP Conference Series: Earth and Environmental Science, 256(1). https://doi.org/10.1088/1755-1315/256/1/012005

Widyawati, W., Yuniarti, D., & Goejantoro, R. (2021). Analisis Distribusi Frekuensi dan Periode Ulang Hujan. Eksponensial, 11(1), 65. https://doi.org/10.30872/eksponensial.v11i1.646

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Published

2024-12-29

Issue

Vol. 13 No. 2 (2024)

Section

Articles

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