South Atlantic Water Science Center

A WaterWatch web map shows streamgages in North and South Carolina that approached or exceeded major flood stage EST on September 19, 2018, as the former Hurricane Florence, now downgraded to a tropical depression, deluged the states with rain.

David Stillwell, USGS hydrologic technician, performs a discharge measurement to help document and forecast flooding caused by Hurricane Florence at Long Creek in Rhyne, North Carolina on Sept. 16. 

A USGS hydrologic scientist installs a storm-tide sensor near the North Carolina coast as Hurricane Florence approaches.

A USGS storm-tide sensor, deployed in advance of Hurricane Florence's landfall. The sensors are housed in vented steel pipes a few inches wide and about a foot long. They are being installed on bridges, piers, and other structures that have a good chance of surviving the storm.

The information the sensors collect will help define the depth and duration of a storm

A leveling instrument being carried by Brad Huffman at a high water mark site in Florence, SC

This video demonstrates how to establish permanent reference points and markers at a well site.
 

This video demonstrates how to measure total well depth below land surface using a weighted, graduated steel tape.

Ocoee River, Tennessee

Hurricanes can cause severe beach erosion
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The Storm-Induced Coastal Change Hazards component of the of the National Assessment of Coastal Change Hazards project

Acoustic Doppler Current Profiler (ADCP) to measure streamflow
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The use of acoustic Doppler current profilers (ADCPs) from a moving boat is now a commonly used method for measuring streamflow. The technology and methods for making ADCP-based discharge measurements are different from the technology and

Jessica Cain and Ryan Rasmussen, Hydrologic Technicians, measure water quality at Jordan Lake, 2016.