UMRR Pool 21 Topobathy

Separate data for floodplain elevation and bathymetry were collected on the Upper Mississippi River System (UMRS) by the US Army Corps of Engineers (USACE), Upper Mississippi River Restoration (UMRR) program. While many information needs can be met by using these data separately, in many cases seamless elevation data across the river and its floodplain are needed. This seamless elevation surface was generated by merging lidar (i.e., floodplain elevation) and bathymetry data. Merging the data required special processing in the areas of transition between the two sources of data.

美国陆军工程兵团（US Army Corps of Engineers, USACE）下属的密西西比河上游修复（Upper Mississippi River Restoration, UMRR）项目，在密西西比河上游水系（Upper Mississippi River System, UMRS）采集了独立的漫滩高程（floodplain elevation）与水深测量（bathymetry）数据。尽管多数信息需求可通过单独使用这两类数据满足，但在诸多场景中，需要覆盖河道及其漫滩的无缝高程数据。该无缝高程表面通过融合激光雷达（lidar，即漫滩高程数据）与水深测量数据生成。在两类数据源的过渡区域，需开展特殊处理以完成数据融合工作。