EPA Region 1 Coast Guard Jurisdictional Boundary - Polygons

Jurisdictional boundary between EPA and Coast Guard for EPA Region I. Created from 1:100000 USGS DLGs with greater detail drawn from 1:24000 commercial street data...美国环境保护署（Environmental Protection Agency，EPA）第一区与美国海岸警卫队的管辖边界数据集。该数据集以1:100000比例尺的美国地质调查局数字线划图（United States Geological Survey Digital Line Graphs，USGS DLGs）为基础制作，并通过1:24000比例尺的商业街道数据补充了更多细节……