South Atlantic Water Science Center (SAWSC)

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Filter Total Items: 223
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

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 dete

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

Wells sampled for groundwater-age dating in New Hanover County, North Carolina

Sulfur hexafluoride (SF6) is a trace atmospheric gas that is primarily of anthropogenic origin but also occurs naturally in fluid inclusions in some minerals and igneous rocks, and in some volcanic and igneous fluids. SF6 has been used as a dating tool of groundwater because atmospheric concentrations of SF6 are expected to continue increasing (Busenberg and Plummer, 1997). SF6 sample

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 w

Date published: January 1, 2018

Stream Channel and Floodplain Metric Toolbox

The Stream Channel and Floodplain Metric Toolbox was developed to demonstrate the feasibility of mapping fluvial geomorphic features from high-resolution bare-earth elevation data. A Python toolbox for ArcGIS was built to calculate key metrics describing channel and floodplain geometry. Channel and Floodplain Metric Toolbox provides this ability in an automated fashion, allowing for regional...

Date published: January 1, 2018

Thickness map of Castle Hayne aquifer confining unit in New Hanover County, North Carolina

Thickness map of Castle Hayne confining unit based on local driller's logs, well construction data, and previously published well data within Brunswick, New Hanover, and Pender counties.

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

Digital Elevation Model of the Difficult Run watershed in Fairfax County, Virginia Derived from 2012 lidar LAS Points

Aerial light detection and ranging (lidar) data were collected over the study site between April 12 – 14, 2012 as part of the Fauquier, Fairfax, Frederick (MD), and Jefferson County acquisition for FEMA Region 3 FY12 VA lidar (Dewberry 2012). Lidar points classified as ground and water were used to create a 3-m digital elevation model (DEM) clipped to the Difficult

Date published: January 1, 2018

Geomorphons of North Carolina

The 10 most common geomorphic features are identified for the state of North Carolina using Lidar derived DEMs at 30 ft. resolution. This product uses r.geomorphon, a feature in GRASS GIS, to calculate the geomorphic features for the state. The tool requires a user input length scale and slope for calculation. This dataset uses 60 cells, or 1800 ft. as the length scale and two different slope...

Date published: January 1, 2018

RUSLE2 Upland Erosion and Sediment Delivery to Stream Data Table for Difficult Run, Virginia

This table contains estimates for upland sediment erosion and delivery to the stream estimated using a modified Revised Universal Soil Loss Equation 2 (RUSLE2) approach (USDA-ARS, 2013). Upland erosion (Eu) was calculated as the sum of the product of the erosivity factor (Rm) estimated for each month, the soil erodibility factor (K), the length-slope factor (LS), C

Date published: January 1, 2018

Data for trends in water quality of selected reservoirs 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