NACC Dams - National Aquatic Barrier Inventory June 2024

This is the national compilation dataset of dams for the United States, including Puerto Rico and the US Virgin Islands. Updated 6/2024 This dataset feeds the National Aquatic Barrier Prioritization Tool at aquaticbarriers.org. This dataset includes large, regulated dams, small dams, unregulated dams, diversion dams, farm ponds, and low head dams. It was compiled from multiple sources using the national inventory of dams as a baseline. In addition to state and local datasets, national barrier datasets used in this inventory include the National Inventory of Dams, USGS Waterfalls of the Conterminous U.S., and USGS Database of Stream Crossings in the U.S. Barriers are snapped to aquatic networks derived from the USGS High Resolution National Hydrography Dataset supplemented with additional information from the National Wetlands Inventory. Along with national data sources, several other regional and state efforts to collect barrier data were included in this inventory and are regularly updated within. To see a list of data sources as well as a link to submit a missing data source, visit aquaticbarriers.org本数据集为美国（含波多黎各及美属维尔京群岛）全国大坝汇编数据集，更新于2024年6月。本数据集为aquaticbarriers.org平台的全国水生屏障优先排序工具提供数据支撑。本数据集涵盖大型调控大坝、小型大坝、非调控大坝、引水坝、农用塘堰以及低水头大坝。本数据集以全国大坝清单为基准，整合多源数据编制而成。除各州及地方数据集外，本清单所采用的全国性屏障数据集还包括：全国大坝清单（National Inventory of Dams）、美国地质调查局（USGS）美国本土48州瀑布数据集、以及美国地质调查局美国溪流穿越点数据库。所有屏障点位均已匹配至由美国地质调查局高分辨率全国水文数据集衍生的水生网络，并辅以全国湿地普查（National Wetlands Inventory）的补充信息。除全国性数据源外，本清单还纳入了多项区域及州级的屏障数据采集项目，并会对其进行定期更新。若需查看数据源列表及提交缺失数据源的链接，请访问aquaticbarriers.org。