20.500.12556/RUL-163424 Comparison of flood hydrograph prediction between synthetic unit hydrograph methods and rain-on-grid model for Katulampa watershed, Indonesia Primerjava napovedi poplavnega hidrograma med metodami sintetičnega hidrograma enote in modelom mrežnih padavin za povodje Katulampa, Indonezija In this paper, 6 synthetic unit hydrograph (SUH) methods, namely Snyder, SCS, GAMA-1, ITB-1, ITB-2, and Nakayasu, were compared against a rain-on-grid model (HEC-RAS) for flood hydrograph prediction in the Katulampa watershed, Indonesia. HEC-RAS was used with an open-access, ~30 m resolution digital elevation model (DEM), i.e. the Advanced Land Observing Satellite (ALOS). The relative error of the hydrograph results (peak discharge and time-to-peak) were compared with the observed data, while the errors in the hydrograph’s shape were detected using the Root Mean Square Error and Pearson Product Moment Correlation. We found that HEC-RAS could predict the flood hydrograph significantly more accurately than the SUH methods, yielding the value of 1.98 m3 /s and the value of 0.93. This study remains an interesting example of how modern computational tool can improve the runoff prediction of conventional SUH methods. V tem prispevku smo primerjali šest metod sintetičnih hidrogramov enote (SUH), tj. Snyder, SCS, GAMA-1, ITB-1, ITB-2 in Nakayasu, z modelom mrežnih padavin (HEC-RAS) za napoved poplavnega hidrograma v povodju Katulampa v Indoneziji. HEC-RAS je bil uporabljen z odprtodostopnim digitalnim modelom višine (DEM) z ločljivostjo ~30 m, tj. Advanced Land Observing Satellite (ALOS). Relativno napako rezultatov hidrograma (najvišji pretok in čas do vrha) smo primerjali z opazovanimi podatki, medtem ko smo napake v obliki hidrograma opazovali z uporabo korena povprečne kvadratne napake (RMSE) in Pearsonove korelacije produkta momentov (PPMC). Ugotovili smo, da lahko HEC-RAS napoveduje poplavni hidrogram bistveno natančneje kot metode SUH, saj poda vrednost RMSE 1,98 m3/s in vrednost PPMC 0,93. Ta raziskava dobro ponazarja, kako lahko sodobno računalniško orodje izboljša napoved odtoka z uporabo običajnih metod SUH. DEM Katulampa synthetic unit hydrograph HEC-RAS rain-on-grid DEM Katulampa sintetični hidrogram enote HEC-RAS mrežne padavine true false true Angleški jezik Slovenski jezik Članek v reviji 2024-10-07 10:23:54 2024-10-07 10:23:57 2024-10-22 10:07:40 0000-00-00 00:00:00 2023 0 0 Str. 81-94 no. 64 Vol. 36 Jun. 2023 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 004.9:556.166-047.48(594) 0352-3551 210442755 Minola_Ginting...-Comparison_of_flood_hydrograph_prediction_between_synthetic_unit_hydrograph_methods_and_rain-on-grid_model_for_Katulampa_watershed,_Indonesia.pdf Minola_Ginting...-Comparison_of_flood_hydrograph_prediction_between_synthetic_unit_hydrograph_methods_and_rain-on-grid_model_for_Katulampa_watershed,_Indonesia.pdf 1 29C723DD33A139041B078092B6C9B258 1320e21bda2c6702cafe2b60fbdea497e68bcb5b44d98600932a0f4381a2c2d0 75164a0f-8485-11ef-b232-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=193070 https://actahydrotechnica.fgg.uni-lj.si/si/paper/a36bmg 1 5344450a-8485-11ef-b232-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=193068 Fakulteta za gradbeništvo in geodezijo Acta hydrotechnica 0 0 0