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Coastal Groundwater Assessment, North Inlet and Waccamaw Neck, South Carolina

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Created: Oct 30, 2019 at 8:10 p.m.
Last updated: Mar 31, 2020 at 2:10 p.m.
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Shallow coastal groundwater flow in beaches and salt marshes has been widely studied over the past 20 years, but far less is known about groundwater flow dynamics or the configuration of the freshwater-saltwater interface in deeper confined aquifers in coastal environments. We used field observations and numerical models of North Inlet, SC, to investigate groundwater flow and transport at scales reaching from the beach and marsh (nearshore scale) through the first major confined aquifer (embayment scale). Sediment cores were collected in collaboration with the South Carolina Department of Natural Resources. Electrical resisistivity surveys were conducted to estimate the salinity in the subsurface. Three wells were installed to monitor water levels and collect water samples. Numerical models were calibrated to the field observations and used to simulate the formation and migration of freshwater-saltwater interfaces at multiple scales; to assess the independence of flow at different scales; and to investigate the impact of future predicted rates of sea-level rise on this system.

Subject Keywords



Coordinate System/Geographic Projection:
WGS 84 EPSG:4326
Coordinate Units:
Decimal degrees
Place/Area Name:
Waccamaw Neck, South Carolina
North Latitude
East Longitude
South Latitude
West Longitude


Start Date:
End Date:


Related Resources

This resource is referenced by Evans, White and Wilson (submitted to WRR)


Funding Agencies

This resource was created using funding from the following sources:
Agency Name Award Title Award Number
NSF Fluid and chemical fluxes across the seafloor of a passive margin EAR-1316250
NSF Collaborative Research: Groundwater dynamics in a barrier island EAR-0711301


People or Organizations that contributed technically, materially, financially, or provided general support for the creation of the resource's content but are not considered authors.

Name Organization Address Phone Author Identifiers
Katherine Luciano South Carolina Geological Survey 5 Geology Road Columbia, SC 29212 843.953.6843
Charles William Clendenin South Carolina Geological Survey 5 Geology Road, Columbia, SC 29212 803.896.7702

How to Cite

Wilson, A. (2020). Coastal Groundwater Assessment, North Inlet and Waccamaw Neck, South Carolina, HydroShare,

This resource is shared under the Creative Commons Attribution CC BY.


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