A high-level cataloging of the most prominent USGS water-data web-based APIs and data endpoints.
A new data offering which consolidates instrumented and discrete groundwater level data into a data stream that yields one value per day
Access subsets of NHDPlus data and discover sites on the river network with the hydro Network Linked Data Index. Navigation types include upstream mainstem, upstream with tributaries, downstream mainstem and downstream with diversions. Services to provide a basin boundary, linked NWIS stream gage sites, water quality data sites, and twelve digit hydrologic unit code (HUC) watershed outlets.
An update on the Network Linked Data Index Web Application Programming Interface and Client Applications