Network topology and mainstem identifiers for the High Resolution National Hydrography Dataset (NHD) based initial 3D Hydrography Program Network

This dataset contains the initial 3D Hydrography Program (3DHP) flow network topology which is based on the final High Resolution National Hydrography Dataset (NHD)...本数据集包含基于最终版高分辨率国家水文数据集（High Resolution National Hydrography Dataset，NHD）构建的初始三维水文项目（3D Hydrography Program，3DHP）水流网络拓扑结构……