SYSTEMS AND METHODS FOR FLOOD ZONE MODELING

摘要

Implementations described and claimed herein provide systems and methods for flood hazard zone modeling. In one implementation, one or more relevant stream segments are identified from an input stream network. One or more cross profiles are defined for one or more selected points on the relevant stream segments, with the selected points located within a flood hazard area. A high resolution flood level elevation map is generated by interpolating flood level elevation from the selected points. A flood depth map is generated having a flood depth value for each of the selected points computed as a difference between the high resolution flood level elevation map and a terrain elevation. One or more flood zones are defined in the flood depth map. The flood zones have a positive flood depth for a return period.

主权项

1. A method for flood hazard modeling, the method comprising:
identifying one or more relevant stream segments from an input stream network using at least one computing unit; defining one or more cross profiles for one or more selected points on the relevant stream segments using the at least one computing unit, the selected points located within a flood hazard area; generating a high resolution flood level elevation map using the at least one computing unit, the high resolution flood level elevation map generated by interpolating flood level elevation from the selected points; generating a flood depth map using the at least one computing unit, the flood depth map having a flood depth value for each of the selected points computed as a difference between the high resolution flood level elevation map and a terrain elevation; and defining one or more flood zones in the flood depth map using the at least one computing unit, the flood zones having a positive flood depth for a return period.