South Atlantic Water Science Center (SAWSC)

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Filter Total Items: 223
Date published: January 1, 2019

Water-quality data for surface-water samples collected from October 2015 through September 2017 at the Triangle Area Water Supply Monitoring Project study sites, North Carolina

The dataset contains the environmental data collected for the Triangle Area Water Supply Monitoring Project. The data are from the samples collected during routine and storm-runoff sampling events during October 2015 through September 2017. Several study sites contained in this dataset were sampled for other USGS projects during the same time frame. Unless the samples at these sites were...

Date published: January 1, 2019

GIS Features Used With the Precipitation Runoff Modeling System for Hydrologic Simulations of the Southeastern United States

The hydrologic response units (HRUs) and stream segments available here are for an application of the Precipitation Runoff Modeling System (PRMS) in the southeastern United States by LaFontaine and others (2019). Geographic Information System (GIS) files for the HRUs and stream segments are provided as shapefiles with attribute hru_id_1 identifying the HRU numbering convention use

Date published: January 1, 2019

Associated data for the Triangle Area Water Supply Monitoring Project, North Carolina, October 2015 - September 2017

These datasets contain information used to compile the report (USGS OFR 2019-xxxx). It contains water-quality data, analytical results of field blanks, and analytical results for environmental and replicate sample sets for surface-water samples collected during water years 2016 and 2017 for the Triangle Area Water Supply Monitoring Program (TAWSMP).

Date published: January 1, 2019

Statistical Streamflow Simulations for 1980-2010 and Headwater GIS Features of the Southeastern United States

The statistically-based estimates of streamflow included here are for the headwater watersheds in the study area described in LaFontaine and others (2019), and were developed using the ordinary kriging methodology described in Farmer (2016). There are four files included that describe the maximum, minimum, mean, and median estimated streamflow for each headwater on a daily time st

Date published: January 1, 2019

Analytical results for blanks collected during surface-water sampling at the Triangle Area Supply Monitoring Project study sites, North Carolina, October 2015 through September 2017

The dataset contains the analytical results for quality-control samples collected during the surface-water sampling for the Triangle Area Water Supply Monitoring Project. The data are equipment blanks, sampling-vehicle (ambient) blanks, and field blanks collected during October 2015 through September 2017. Several study sites contained in this dataset were sampled for other USGS project

Date published: October 5, 2018

Geomorphological Features of North Carolina

For these three statewide datasets of North Carolina, information was extracted and post processed from lidar derived digital elevation models (DEMs) at 10 ft. and 30ft. resolution. Datasets are currently used for the project SPARROW Modeling for North Carolina Watersheds, but have the potential to be used in numerous applications. Slope area index (SAI), the ten most common geomorp

Date published: October 4, 2018

Groundwater Conditions of Georgia

The Groundwater Conditions of Georgia application has interactive maps and graphs, that calculate water level trends over time. The application is a continuation of a series of reports begun in 1978.  

► Go to the Groundwater Conditions of Georgia application

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 http:%

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

Groundwater/Surface-Water Interactions Along Ellerbe Creek in Durham, North Carolina, 2016–18

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-sepa

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.