Author(s): Lampros Vasiliades; Evangelia Farsirotou; Aris Psilovikos
Linked Author(s):
Keywords: No Keywords
Abstract: The flood event that occurred on September 18th 2020 in Kalentzis river basin due to the Medicane “Ianos”, is reproduced using an integrated hydrologic/hydraulic modelling framework to simulate the flood hydrograph and the flood extent in the greater area of Karditsa city. Extreme rainfall amounts observed in the mountainous and lowland areas, with estimated return periods of 1000 and 200 years, respectively, for rain duration of 24 hours, are used to estimate areal precipitation at 15-min time interval at subwatershed level. Using the HECHMS software and the Natural Resources Conservation Service (NRCS), Unit Hydrograph procedure simulated flood hydrographs, at important tributaries junctions, which were then applied in HEC-RAS 2D model for flood routing and estimation of flood attributes (i. e., water depths and flow velocities), as well as mapping of inundated areas.
Year: 2022