20220919 20195800 1.0 TRUE USGS Gauging Stations A Gauging station (site) is a location used by hydrologists or environmental scientists to monitor and test terrestrial bodies of water. This is a map of the USGS Gauging Sites that are located in Oklahoma. These sites are located on all important water sources in Oklahoma, including rivers, creeks, and lakes around the state. Oklahoma Department of Environmental Quality, USGS