The Impact of Changing Storage Area on Flood Magnitude and Occurrence
Keywords:Storage, catchment, flood peaks.
AbstractThis study focuses on the impact of combined catchment and storage upon flood occurrences and flood peaks. A significant factor that plays an important role of the combined catchment and storage is the ratio of contributing catchment area to storage area (AC/AS) where the impact significantly shows increasing frequency of storage overflow and flood peaks with the increasing of AC/AS. Some case studies examined in this work, i.e. Way Pegadungan (Lampung, Sumatra) and NagaraRiver (South Kalimantan) catchments show similar behavior. Swamps located on the sides of downstream of Way Pegadungan as well as Nagara River act as storages during flood events. The dyke which was planned to be built increases the ratio of AC/AS significantly as storage area reduced considerably. This has an impact on flood peaks which can increase considerably. The improved understanding of these process controls will be useful in assisting the management of such catchments, particularly to assist in flood prevention and mitigation.
Balek, J., Hydrology and Water Resources in Tropical Regions, Elsevier, New York, 1983.
Fitzgibbon, J., and Dunne, T., Land Surface and Lake Storage During Snowmelt Runoff in A Subarctic System, Arct. Alp. Res., 13, 1981, pp. 277 – 285.[CrossRef]
Mielko, C., and Woo, M.K., Snowmelt Runoff Processes in A Headwater Lake and Its Catchment, Subarctic Canadian Shield, Hydrol. Process, 20, 2006, pp. 987 – 1000.[CrossRef]
Kusumastuti, D.I., Sivapalan, M., Struthers, I., Reynolds, D.A., Murray, K., and Turlach, B.A., Thresholds in the Storm Response of A Catchment-Lake System and the Occurrence and Magnitude of Lake Overflows: Implications for Flood Frequency. Water Resour. Res, 44, 2008, W02438, doi:10.1029/2006WR005628.[CrossRef]
Sivapalan, M., Wood, E. F., and Beven, K.: On Hydrologic Similarity: 3. A Dimensionless Flood Frequency Model Using A Generalized Geomorphologic Unit Hydrograph and Partial Area Runoff Generation, Water Resour Res, 26(1), 1990, pp. 43–58.
Sivapalan, M., Bloschl, G., Merz, R., and Gutknecht, D., Linking Flood Frequency to Long-term Water Balance: Incorporating the Effects of Seasonality. Water Resour. Res., 41, 2005, W06012, doi:10.1029/2004WR003439.[CrossRef]
Kusumastuti, D.I., Struthers, I., Sivapalan, M., and Reynolds, D.A., Threshold Effects in Catchment Storm Response and the Occurrence and Magnitude of Flood Events: Implications for Flood Frequency, Hydrol. Earth Syst. Sci., 11, 2007, pp. 1515–1528.[CrossRef]
Kusumastuti, D.I., Sivapalan, M., Struthers, I., Reynolds, D.A., Thresholds in the Storm Response of A Lake Chain System and the Occurrence and Magnitude of Lake Overflows: Implications for Flood Frequency. Advances in Water Resources, 31, 2008, pp. 1651-1661.[CrossRef]
Kusumastuti, D.I., The Impact of Within-Storm Temporal Pattern on Flood Frequency; Application on A Catchment in Lampung. Internatio-nal Journal of Science Engineering and Technology, 2(3), 2009, pp. 1-6.
Kusumastuti, D.I., The Impact of Rainfall Variability and Hydrological Regimes on Flood Frequency, Proceeding International Seminar on Water Related Risk Management, Jakarta-Indonesia, July 15 – 17, 2011, 114-122.
Kusumastuti, D.I., Konsep Tampungan dan Perlindungan Banjir. Prosiding Seminar Hasil Penelitian & Pengabdian Kepada Masyarakat, Lembaga Penelitian. Universitas Lampung. 2008, pp. 55-61.
Brunner, G.W., HEC-RAS River Analysis User’s Manual Version 4.1. US Army Corps of Engineers, Institute for Water Resources, Hydrology Engineering Center (HEC), 2010.
Duflow Modelling Studio, User’s Guide, Stowa, EDS, 2000.
Joleha, J., V. Maino, A. Adyabadam, W. Zhao, S. Ke, T.H., Le., Flood Mitigation of Nyando River Using Duflow Modelling, Civil Engineering Dimension, 11(1), 2009, pp.46-57.
Badilla, R.A., Flood Modelling in Pasiq-Marikina River Basin. M.Sc. Thesis. 2008. International Institute for Geo-Information Science and Earth Observation, Enschede, The Netherlands.
Kusumastuti, D.I., Analisis Dampak Tanggul terhadap Elevasi Banjir Sungai Nagara Kalimantan Selatan. Rekayasa, 15(3), 2011, pp.183-192.
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