USGS Water Services · Schema
Site Types
The hydrologic cycle setting or a man-made feature thought to affect the hydrologic conditions measured at a site. Primary and secondary site types associated with data collection sites. All sites have a primary site type, and may additionally have a secondary site type that further describes the location.
WaterStreamflowGroundwaterWater QualityHydrologyEnvironmentalUSGSNWISGovernmentOpen DataOGC