USACE Civil Works Divisions

Polygons showing USACE Civil Works Division boundaries. This dataset was digitized from the NRCS Watershed Boundary Dataset (WBD). Where districts follow administrative boundaries, such as County and State lines, National Atlas and Census datasets were used. USACE District GIS POCs also submitted data to incorporate into this dataset. This dataset has been simplified +/- 30 feet to reduce file size and speed up drawing time. 04/16/20 - Update to show new LRC boundary.本数据集为呈现美国陆军工程兵团（USACE）土木工程分部边界的多边形要素数据集，源自美国自然资源保护局（NRCS）的流域边界数据集（WBD）并完成数字化处理。当分区以县界、州界等行政边界作为划分依据时，本数据集参考了国家地图集与人口普查数据集；美国陆军工程兵团分区地理信息系统（GIS）的对接联系人亦提交相关数据，以将其纳入本数据集。为缩减文件体积、提升绘图加载效率，本数据集已进行±30英尺的简化处理。2020年4月16日：本次更新用于展示新的LRC边界。