Bankfull polygon coverage of Lower Missouri River

Shapefile created by USGS. This is a channel polygon coverage digitized from aerial photography at the top of the high bank. The low-altitude aerial orthophotos were...本数据集为美国地质调查局（USGS）创建的形状文件（Shapefile）。该数据集为一套河道多边形覆盖数据，系通过对高岸顶部的航空摄影影像进行数字化采集得到。本次所采用的低空航空正射影像为……