12d Model Rivers and Flooding

12d® Model™ Rivers modules offer river engineers and mappers new levels of flexibility, power, and productivity. 12d® Model™ substantially reduces modelling setup time for river, flood plain, and open channel studies.

Start with survey data, airborne laser scanning (LIDAR), cross-section data, USGS DEM data, CAD data, or a combination of these to create a ground surface for your river. Include buildings, roads, and channel improvements and design. 12d® Model™ efficiently handles several million points, making it ideal for the dense data that results from LIDAR, photogrammetry and traditional surveys LIDAR, photogrammetry and traditional surveys of large areas. Start with survey data, airborne laser scanning (LIDAR), cross-section data, USGS DEM data, CAD data, or a combination of these to create a ground surface for your river.

Include buildings, roads, and channel improvements and design. 12d® Model™ efficiently handles several

Million points, making it ideal for the dense data that results from LIDAR, photogrammetry and traditional surveys of large areas. Include buildings, roads, and channel improvements and design. 12d® Model™ efficiently handles several million points, making it ideal for the dense data that results from LIDAR, photogrammetry and traditional surveys of large areas.

For additional clarity, aerial photographs can be used as backdrops for your work. The user specifies the river centre line, overbanks and cross-section (straight line or bent) locations. 12d® Model™ automatically determines river levees and exports the 3d river system to programs such as HEC-RAS, Mike 11, UNET, ISIS and XP SWMM. ISIS and XP SWMM storage/reservoirs receive stage-area curves directly from the surface tin.

The water levels are read from the output files or users can create their own flood level files to map observed floods. Calculated flood limits can be shown in plan, section or perspective views. Flood inundation maps with depth contours and colouring by depth ranges can be quickly and easily prepared.