This high-level metadata data document will be supplemented with detailed regional metadata at a later date. The NHDPlusV2 is an integrated suite of application-ready geospatial data sets that incorporate many of the best features of the National Hydrography Dataset (NHD) and the National Elevation Dataset (NED). Interest in estimating stream flow volume and velocity to support pollutant fate-and-transport modeling was the driver behind the joint USEPA and USGS effort to develop the initial NHDPlus, referenced in this document as NHDPlusV1. NHDPlusV1 has been used in a wide variety of applications since its initial release in the fall of 2006. This widespread positive response prompted the multi-agency NHDPlus...
These files display USGS streamgages in Google Earth, which is an interactive, 3D viewer that seamlessly zooms from a global scale down to less than a meter in many urban areas. To display the streamgages in a state, select one of the state names below (or the entire United States) by clicking on the region name. This will download a KML file, which can be viewed in Google Earth. Clicking on the streamgage symbol in Google Earth will display the station number, the station name, the first date of data collection, the last date of data collection (as of September 30, 2005), and the number of days in the dataset. Data collection has been discontinued at about two thirds of the streamgages and, therefore, the last...
