Topography Hydro Breaklines

The dataset contains hydro-breaklines that were collected in 2D as vector line work, using a combination of classified lidar dataset, intensity images, shaded relief TIN and contours. This data is used for the planning and management of Washington, D.C. by local government agencies.本数据集包含以二维矢量线要素形式采集的水文断裂线（hydro-breaklines），其采集所用数据源涵盖分类激光雷达数据集、强度影像、晕渲不规则三角网（shaded relief TIN）及等高线。该数据由当地政府机构用于华盛顿哥伦比亚特区的规划与管理工作。