Keywords
gis, hspf model, karstic area, koiliaris river basin, snow melt
Start Date
1-7-2008 12:00 AM
Abstract
The purpose of this study was to model the Koiliaris River flow where flood phenomena appear from time to time. The Koiliaris River basin is located east of the City of Chania, Crete, (Greece). The basin is extended from the White Mountains (Lefka Ori) to the coastline. The geology of the basin is mainly constituted by carbonate (Karstic area), quaternary-neogenic deposits and flysch formation. The main volume of water is discharged from the karstic system of the White Mountains (Lefka Ori) through springs and temporary rivers. In order to calculate the flow from the springs the Maillet Karstic model is used. The main volume of water that is discharged to the springs through the karstic system comes from snow melt. In order to determine with high precision the rate of snow melt, a Snow melt model and the applications of GIS are combined. Using this approach the discharge from springs (for the time of the simulation) is determined. The time-series of the karstic discharge from the springs is entered in the code of the Hydrological Simulation Program - FORTRAN (HSPF) model, in order to calculate both the surface and subsurface discharge. The HSPF is a set of computer codes that simulate the hydrologic process. The hydrologic model of HSPF functions in the frame of the BASINS 4 model. The final step is the Calibration and the Sensitivity analysis of the HSPF model. The main objective of the present study is to develop a tool for the prediction and management of flood events that occur in the area.
Simulation of the flow in the Koiliaris River basin (Greece) using a combination of GIS, the HSPF model and a Karstic– Snow melt model
The purpose of this study was to model the Koiliaris River flow where flood phenomena appear from time to time. The Koiliaris River basin is located east of the City of Chania, Crete, (Greece). The basin is extended from the White Mountains (Lefka Ori) to the coastline. The geology of the basin is mainly constituted by carbonate (Karstic area), quaternary-neogenic deposits and flysch formation. The main volume of water is discharged from the karstic system of the White Mountains (Lefka Ori) through springs and temporary rivers. In order to calculate the flow from the springs the Maillet Karstic model is used. The main volume of water that is discharged to the springs through the karstic system comes from snow melt. In order to determine with high precision the rate of snow melt, a Snow melt model and the applications of GIS are combined. Using this approach the discharge from springs (for the time of the simulation) is determined. The time-series of the karstic discharge from the springs is entered in the code of the Hydrological Simulation Program - FORTRAN (HSPF) model, in order to calculate both the surface and subsurface discharge. The HSPF is a set of computer codes that simulate the hydrologic process. The hydrologic model of HSPF functions in the frame of the BASINS 4 model. The final step is the Calibration and the Sensitivity analysis of the HSPF model. The main objective of the present study is to develop a tool for the prediction and management of flood events that occur in the area.
