Authors : Rachid Mansouri and Mazouz Kherouf Uwe Troger
Abstract: The increase in population density and building density exert the most obvious influence on hydrological processes in an urban area. Modification of the land surface during urbanisation alters the stormwater runoff characteristics. The major modification which alters the runoff process is the impervious surfaces of the catchment such as roofs, side walks, roadways and parking lots, which were previously pervious. Within the framework, a physically based hydrological model coupled with the SCS curve number method is presented to assess the runoff changes due to land-use changes. In order to approach a reasonable result in hydrologic modelling satellite based remote technologies are used to extract land surface parameters. Future changes in land use can also be incorporated in the model once digital database is available and the change in runoff production can be found out. Thus land-use planning and management can be done efficiently. The relationships developed between changes in runoff with respect to a change in CN are very useful to quantify the effect of land-use change. The change in peak runoff values can be estimated for a basin having known changes in land-use for known rainfall. The study clearly demonstrated that the integration of spatial data and the application of a physically based model in a remote sensing environment provide a powerful tool for the assessment of an effect due to land-use change.
Rachid Mansouri and Mazouz Kherouf Uwe Troger , 2007. Simulation the Impact of Land-Use Changes on Runoff Hydrographs Through Remote Sensing. Journal of Engineering and Applied Sciences, 2: 377-384.