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A USGS gauging station on the Scioto River below O'Shaughnessy Dam near Dublin, Ohio. The USGS operates the streamgaging network for the United States, with over 7400 streamgages. Real-time streamflow data [17] are available online.
Part of Canyon Lake Gorge. Canyon Lake Gorge is a limestone gorge in Texas, which is around 1 mile (1.6 km) long, hundreds of yards (metres) wide, and up to 50 feet (15 m) or more deep, which was exposed in 2002 when extensive flooding of the Guadalupe River led to a huge amount of water going over the spillway from Canyon Lake reservoir and removing the sediment from the gorge.
Each subregion includes the area drained by a river system, a reach of a river and its tributaries in that reach, a closed basin or basins, or a group of streams forming a coastal drainage area. [6] Regions receive a two-digit code. The following levels are designated by the addition of another two digits. [7]
Big Darby Creek is a scenic river located in northwestern central Ohio, and an important tributary to the Lower Scioto River. The river's major tributary is the Little Darby Creek . The river runs 84 miles (135 km) from its source near the Champaign - Union county line, south-east through Union and Madison Counties.
The Pennsylvanian Pottsville Formation is a mapped bedrock unit in Pennsylvania, western Maryland, West Virginia, Ohio, and Alabama.It is a major ridge-former in the Ridge-and-Valley Appalachians of the eastern United States. [3]
Located in South Central Texas, the Edwards Aquifer encompasses an area of approximately 4,350 square miles (11,300 km 2) that extends into parts of 11 counties. [3] The aquifer's boundaries begin at the groundwater divide in Kinney County, East of Brackettville, and extend Eastward through the San Antonio area and then Northeast where the aquifer boundary ends at the Leon River in Bell County ...