USGS Streamgages in the Conterminous United States Indexed to NHDPlus v2.1 Flowlines to Support Streamgage Watershed InforMation (SWIM), 2021

This U.S. Geological Survey (USGS) data release includes locations for 12,422 USGS streamgages as indexed along the network of streams (flowlines) in NHDPlus Version...本美国地质调查局（U.S. Geological Survey, USGS）发布的数据集，收录了12422个USGS河川流量监测站的点位信息，这些监测站依据NHDPlus版本……的水系（水流线，flowlines）网络完成索引。