1016 KB56 KB199920252023Christopher, CleonLidyana, PrillaMinola Ginting, BobbyYudianto, DoddiYuebo, Xieletnik:36številka:64str. 81-94ISSN:0352-3551COBISSID_HOST:210442755URN:URN:NBN:SI:doc-OBKTCBN3enFakulteta za gradbeništvo in geodezijoActa hydrotechnicaDEMHEC-RASKatulampamrežne padavinerain-on-gridsintetični hidrogram enotesynthetic unit hydrographComparison 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 methodsV 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 SUHTEXTznanstveno časopisjejournalsSlovenian National E-content AggregatorNational and University Library of SloveniaUniverza v Ljubljani, Fakulteta za gradbeništvo in geodezijo