South Atlantic Water Science Center (SAWSC)

Data and Tools

Real-time streamflow:     GA  ||  NC  ||  SC
Real-time water-quality data:    GA  ||  NC  ||  SC 
Real-time groundwater levels:    GA  ||  NC  ||  SC
Real-time precipitation:    GA  ||  NC  ||  SC

Filter Total Items: 173
Date published: August 10, 2018

Positive Openness for North Carolina - 53 Huc 8's

Rasters of positive openness for the 53 hydrologic unit code (HUC) 8 watersheds in the state of North Carolina. Positive openness uses a line-of-sight approach to measure the surrounding eight zenith angles viewed above the landscape surface out to a specified distance. The central cells gets and average of the eight angles. An angle of 90 degrees would indicate a flat surface, while angles...

Date published: January 30, 2018

Flood-inundation areas and depths for the Withlacoochee River in Lowndes County, Georgia from Skipper Bridge Road to St. Augustine Road

Digital flood-inundation maps for a 12.6-mile reach of the Withlacoochee River from Skipper Bridge Road to St. Augustine Road, Lowndes County, Georgia, were created by the U.S. Geologicay Survey (USGS) in cooperation with the city of Valdosta and Lowndes County, Georgia. The inundation maps, which can be accessed through the USGS Flood Inundation Mapping Science Web site at...

Date published: January 1, 2018

Mississippi Alluvial Plain Extent, November 2017

The Mississippi Alluvial Plain (MAP) has become one of the most important agricultural regions in the US, and it relies heavily on a groundwater system that is poorly understood and shows signs of substantial change. The heavy use of the available groundwater resources has resulted in significant groundwater-level declines and reductions in base flow in streams within the MAP. These impacts...

Date published: January 1, 2018

Difficult Run field estimated floodplain and bank flux and toolbox geomorphic metrics for field sites

A cvs file containing field datasets used to develop regression models to predict sediment and nutrient retention services for streams within the Difficult Run watershed. Field measurements of floodplain deposition and bank erosion were provided in previously published datasets from Hupp et al. (2013) and Gellis et al. (2017). At each field site, 3-5 nearby cross sections from the Toolbox were...

Date published: January 1, 2018

Groundwater-Surface Water Interactions in Ellerbe Creek in Durham, North Carolina, 2016-2018

A hydrologic study involving the investigation of groundwater-surface water interactions along Ellerbe Creek, a major tributary to upper Falls Lake, was conducted in order to determine if groundwater is a likely source of nitrate input to the stream. Groundwater-surface water interactions were characterized by synoptic streamflow measurements, groundwater-level monitoring, hydrograph-...

Date published: January 1, 2018

Mean Annual Recharge 1979-2016 for New Hanover County, North Carolina

The data is derived from a Soil-Water Balance model for New Hanover, Brunswick, and Pender counties for the years 1979-2016 which is located on the USGS Model Node.

Date published: January 1, 2018

Target-Chemical Concentrations, Exposure Activity Ratios, and Bioassay Results for Assessment of Mixed-Organic/Inorganic-Chemical Exposure in USA Tapwater, 2016

Chemical and biological concentration results, quality assurance and quality control and statistical summaries from 26 tapwater samples, collected from paired residential and work place sites in 11 states in 2016. Samples were analylzed at U.S. Geological Survey and U.S. Environmental Protection Agency laboratories.

Date published: January 1, 2018

Concentrations of Pesticides, Pharmaceuticals, Organic Waste Indicators, and Volatile Organic Chemical Contaminants and Their Predicted Effects Potential in Wadeable Southeastern USA Streams

This dataset presents the results of 475 unique organic compounds collected from 54 wadeable streams within the Southeastern, USA, collected within 10 weeks during 2014. Maximum and median exposure conditions were evaluated in relation to watershed characteristics and for potential biological effects. This dataset contains the summary statistics (maximum and median concentrations)of detected...

Date published: January 1, 2018

Location information for upper hydrogeologic units near New Hanover County, NC

Hydrogeologic unit location data derived from driller logs, geophysical logs, and previously published well information for boreholes located near New Hanover County, NC.

Date published: January 1, 2018

Fiber-optic distributed temperature data collected along the streambed of Ellerbe Creek, Durham, North Carolina, USA

The data set includes temperature data from the base of the water column along the sediment interface of Ellerbe Creek, Durham, North Carolina, USA, in support of a study regarding groundwater/surface water exchange. The data were collected from 07/18/2017 to 07/26/2017 using a fiber-optic distributed temperature sensing system that has 1.01 m spatial resolution along the linear fiber-optic...

Date published: January 1, 2018

Geodatabase of Toolbox Geospatial Output Files for Difficult Run, VA

Geodatabase of outputs generated from the hydrologically conidtioned DEM and the USGS Stream Channel and Floodplain Metric Toolbox.

Date published: January 1, 2018

Data for trends in water quality of selected streams used for water supply in the Triangle area of North Carolina, 1989-2013

This U.S. Geological Survey Data Release contains the associated data described in the Scientific Investigations Report, "Trends in water quality of selected streams and reservoirs used for water supply in the Triangle area of North Carolina, 1989-2013". Since 1989, the U.S. Geological Survey and a consortium of local governments have tracked water-quality conditions and trends in the water-...