METHODS OF DETERMINING THE EXTENT OF FLOOD INUNDATION BASED 3D RECONSTRUCTION USING THE DATA TOPOLOGY OF THE TERRAIN
The article proposes a methodology for the assessment of the extent of flooding under future water levels at the test points. For this algorithm, which is the definition of the area of the analyzed area, divide it into a grid of geographical coordinates and cyclic polling of open geographic information systems about the height of the earth´s surface at these points, thus obtaining an array with information about the topology of the terrain in the study area. On the basis of the received data is the 3D reconstruction of the surface adjacent to the reservoir area. Based on data on water levels resulting from objective control or the predicted value calculation circuit of the new shoreline of the reservoir and estimation of the volume of accumulated water that allows you to build a more detailed forecast of emerging threats and extent of damage caused by floods on the basis of three-dimensional dynamic model of the moving water.