Kevin M. Befus
Daniel J. Hoover
Patrick L. Barnard
20230128
Projected groundwater emergence and shoaling along the North and South Carolina coasts
polygon shapefile
data release
DOI:10.5066/P9W91314
Pacific Coastal and Marine Science Center Santa Cruz, California
U.S. Geological Survey
https://doi.org/10.5066/P9W91314
Patrick L. Barnard
Kevin Befus
Jeffrey J. Danielson
Anita C. Engelstad
Li H. Erikson
Amy C. Foxgrover
Matthew W. Hardy
Daniel J. Hoover
Tim Leijnse
Chris Massey
Robert McCall
Norberto C. Nadal-Caraballo
Kees Nederhoff
Leonard Ohenhen
Andrea C. O’Neill
Kai A. Parker
Manoocher Shirzaei
Xin Su
Jennifer A. Thomas
Maarten van Ormondt
Sean F. Vitousek
Kilian Vos
Madison C. Yawn
2023
Future coastal hazards along the U.S. North and South Carolina coasts
data release
DOI:10.5066/P9W91314
Pacific Coastal and Marine Science Center, Santa Cruz, CA
U.S. Geological Survey
https://doi.org/10.5066/P9W91314
Groundwater emergence and shoaling extents are derived from water table depth GeoTIFFs, which are calculated as steady-state groundwater model heads subtracted from high-resolution topographic digital elevation model (DEM) land surface elevations. Results are provided as shapefiles of water table depth in specific depth ranges.
Projections for future sea-level rise provide emergency responders and coastal planners with critical hazards information that can be used to increase public safety, mitigate physical damages, and more effectively manage and allocate resources within complex coastal settings. These data are intended for policy makers, resource managers, science researchers, students, and the general public. These data can be used with geographic information systems or other software to identify and assess possible areas of vulnerability. These data are not intended to be used for navigation.
This data release was funded by the Additional Supplemental Appropriations for Disaster Relief Act of 2019 (H.R. 2157) for North Carolina and South Carolina. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
20080101
2022
oldest dataset used through year of publication
None Planned
-81.469853
-75.444681
36.630934
31.870736
USGS Metadata Identifier
USGS:41b221ce-cc95-45fc-ab1f-cfc58d92b62a
Data Categories for Marine Planning
Physical Habitats and Geomorphology
Global Change Master Directory (GCMD)
Hazards Planning
Beaches
Sea Level Rise
Floods
Water Depth
USGS Thesaurus
Climate Change
Floods
Groundwater Flow
Sea-level Change
mathematical modeling
effects of climate change
earth sciences
ISO 19115 Topic Category
Oceans
GeoscientificInformation
InlandWaters
Marine Realms Information Bank (MRIB) keywords
sea level change
floods
None
U.S. Geological Survey
USGS
Coastal and Marine Hazards and Resources Program
CMHRP
Pacific Coastal and Marine Science Center
PCMSC
Geographic Names Information System
State of North Carolina
State of South Carolina
none
USGS-authored or produced data and information are in the public domain from the U.S. Government and are freely redistributable with proper metadata and source attribution. Please recognize and acknowledge the U.S. Geological Survey and the University of Arkansas as the originators of the dataset and in products derived from these data. This information is not intended for navigation purposes.
U.S. Geological Survey, Pacific Coastal and Marine Science Center
PCMSC Science Data Coordinator
mailing and physical
2885 Mission Street
Santa Cruz
CA
95060-5792
US
831-460-4747
831-427-4748
pcmsc_data@usgs.gov
GWHazards_WTdepth_binned_browse_graphic.png
Map showing water table depth results along the coasts of North and South Carolina for the K x 1 and present-day sea-level rise (0m) scenario. Colors represent binned water table depths relative to the ground surface, including areas of emergent (flooded) groundwater (red).
PNG
Attribute values are model-derived water table depths for present-day and future sea-level rise conditions. The model uses parameters from calibrated and published groundwater models and is intended to show the general response of the shallow coastal water table to sea-level rise. Water table depths are calculated relative to the best-available ground surface elevations from available digital elevation models (DEMs), but DEM inaccuracies introduce additional uncertainty into calculated water table depths. Projected water tables for future sea-level rise conditions cannot be validated against observations.
Data have undergone quality checks and meet standards.
Dataset is considered complete for the information presented. Users are advised to read the metadata record carefully for additional details.
Data are concurrent with topographic digital elevation model (DEM) locations.
Model-derived head elevations are accurate within the limitations of the model. The model uses parameters from calibrated, published groundwater models, but limitations due to model resolution and uncertainty in model parameter values may significantly affect modeled head elevations. For water table depths, modeled heads are subtracted from land surface elevations from the best available digital elevation models (DEMs). DEM inaccuracy will introduce additional uncertainty into water table depth results. As a result, water table depth results are intended to show only the general response of the shallow coastal water table to sea-level rise.
Kevin M. Befus
Daniel J. Hoover
Patrick L. Barnard
2023
Projected water table depths along the North and South Carolina coasts
raster
online
U.S. Geological Survey
https://doi.org/10.5066/P9W91314
digital dataset
20080101
2022
oldest dataset used through year of publication
water table depth
raster depths that were converted to polygons by depth range
Using water table depth raster data, a polygon shapefile was created for inundated (marine) areas and for water table depths in specific depth ranges (emergent, 0-1m, 1-2m, 2-5m, >5m).
water table depth
20220305
Edits were made to correct spelling in author name. No data were changed. The metadata available from a harvester may supersede metadata bundled within a download file. Users are advised to compare the metadata date of this file to any similar file to ensure they are using the most recent version. (scochran@usgs.gov)
20230516
Vector
Universal Transverse Mercator
17
0.999600
-81.000000
0.000000
500000.000000
0.000000
row and column
10.000000
10.000000
meters
GCS WGS 1984
Geodetic Reference System 80
6378137.000000
298.257224
NAVD88
1.0
meters
Implicit coordinate
projected water table depths
shapefiles of projected water table depths for the State, SLR, and K case specified.
originators at United States Geological Survey, Pacific Coastal and Marine Science Center
fbin_m
Depth range code
producer defined
-1
inundated (marine)
producer defined
0
emergent
producer defined
1
0 to 1 meter
producer defined
2
1 to 2 meters
producer defined
5
2 to 5 meters
producer defined
7
deeper than 5 meters
producer defined
type
type of polygon: terrestrial or marine/tidal
producer defined
terrestrial
terrestrial groundwater polygon
producer defined
marine/tidal
surface flooding polygon associated with marine inundation due to sea-level rise, or with tidal flooding associated with the Mean Higher-High Water coastal boundary condition.
producer defined
wtdepth
Water table depth associated with specific fbin_m code
producer defined
marine/tidal
surface flooding of marine or tidal origin (fbin_m code -1)
producer defined
0m, emergent
surface flooding associated with terrestrial groundwater emerging at the ground surface (fbin_m code 0).
producer defined
0-1m, very shallow
groundwater table between the ground surface and 1m below the surface (fbin_m code 1).
producer defined
1-2m, shallow
groundwater table between 1 and 2m below the ground surface (fbin_m code 2).
producer defined
2-5mm, moderate
groundwater table between 2 and 5m below the ground surface (fbin_m code 5).
producer defined
>5m, deep
groundwater table greater than 5m below the ground surface (fbin_m code 7).
producer defined
U.S. Geological Survey - CMGDS
mailing and physical
2885 Mission Street
Santa Cruz
CA
95060
USA
831-427-4747
pcmsc_data@usgs.gov
Zip files (GWHazards_EmergShoaling_NC_Kx0p1_WTbins.ZIP, GWHazards_EmergShoaling_NC_Kx1 _WTbins.ZIP, GWHazards_EmergShoaling_NC_Kx10 _WTbins.ZIP, GWHazards_EmergShoaling_SC_Kx0p1_WTbins.ZIP, GWHazards_EmergShoaling_SC_Kx1 _WTbins.ZIP, GWHazards_EmergShoaling_SC_Kx10 _WTbins.ZIP) contain shapefiles of binned water table depth projections for all 8 SLR cases for the State and hydraulic conductivity (K) indicated. When unzipped, individual groundwater emergence and shoaling shapefiles have filenames with the structure “EmergShoaling (St_abbrev)_Kzell(K#)_slr(SLR#)m_10m_wtbins”, where St_abbrev is the abbreviated State name (NC, SC), K# is 0p1, 1, or 10, and SLR# is 0p00, 0p25, 0p50, 1p00, 1p50, 2p00, 2p50, or 3p00.File sizes are in MB.
Unless otherwise stated, all data, metadata and related materials are considered to satisfy the quality standards relative to the purpose for which the data were collected. Although these data and associated metadata have been reviewed for accuracy and completeness and approved for release by the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty.
Shapefile
ArcGIS 10.5
Features are shapefiles and are projected in UTM Zone 17 coordinates, with horizontal datum GCS_WGS_1984 and vertical datum NAVD88.
The .zip file (GWHazards_EmergShoaling_NC_Kx0p1_WTbins.zip) includes 8 shapefiles for the State of North Carolina, K x 0.1 hydraulic conductivities, SLRs of 0, 0.25, 0.5, 1.0, 1.5, 2.0, 2.5, and 3.0m.
WinZip
434.5
https://doi.org/10.5066/P9W91314
Data can be downloaded using the Network_Resource_Name link then scrolling down to the Simulation Data section.
Shapefile
ArcGIS 10.5
Features are shapefiles and are projected in UTM Zone 17 coordinates, with horizontal datum GCS_WGS_1984 and vertical datum NAVD88.
The .zip file (GWHazards_EmergShoaling_NC_Kx1_WTbins.zip) includes 8 shapefiles for the State of North Carolina, K x 1 hydraulic conductivities, SLRs of 0, 0.25, 0.5, 1.0, 1.5, 2.0, 2.5, and 3.0m.
WinZip
418.6
https://doi.org/10.5066/P9W91314
Data can be downloaded using the Network_Resource_Name link then scrolling down to the Simulation Data section.
Shapefile
ArcGIS 10.5
Features are shapefiles and are projected in UTM Zone 17 coordinates, with horizontal datum GCS_WGS_1984 and vertical datum NAVD88.
The .zip file (GWHazards_EmergShoaling_NC_Kx10_WTbins.zip) includes 8 shapefiles for the State of North Carolina, K x 10 hydraulic conductivities, SLRs of 0, 0.25, 0.5, 1.0, 1.5, 2.0, 2.5, and 3.0m.
WinZip
328.4
https://doi.org/10.5066/P9W91314
Data can be downloaded using the Network_Resource_Name link then scrolling down to the Simulation Data section.
Shapefile
ArcGIS 10.5
Features are shapefiles and are projected in UTM Zone 17 coordinates, with horizontal datum GCS_WGS_1984 and vertical datum NAVD88.
The .zip file (GWHazards_EmergShoaling_SC_Kx0p1_WTbins.zip) includes 8 shapefiles for the State of South Carolina, K x 0.1 hydraulic conductivities, SLRs of 0, 0.25, 0.5, 1.0, 1.5, 2.0, 2.5, and 3.0m.
WinZip
266.0
https://doi.org/10.5066/P9W91314
Data can be downloaded using the Network_Resource_Name link then scrolling down to the Simulation Data section.
Shapefile
ArcGIS 10.5
Features are shapefiles and are projected in UTM Zone 17 coordinates, with horizontal datum GCS_WGS_1984 and vertical datum NAVD88.
The .zip file (GWHazards_EmergShoaling_SC_Kx1_WTbins.zip) includes 8 shapefiles for the State of South Carolina, K x 1 hydraulic conductivities, SLRs of 0, 0.25, 0.5, 1.0, 1.5, 2.0, 2.5, and 3.0m.
WinZip
261.4
https://doi.org/10.5066/P9W91314
Data can be downloaded using the Network_Resource_Name link then scrolling down to the Simulation Data section.
Shapefile
ArcGIS 10.5
Features are shapefiles and are projected in UTM Zone 17 coordinates, with horizontal datum GCS_WGS_1984 and vertical datum NAVD88.
The .zip file (GWHazards_EmergShoaling_SC_Kx10_WTbins.zip) includes 8 shapefiles for the State of South Carolina, K x 10 hydraulic conductivities, SLRs of 0, 0.25, 0.5, 1.0, 1.5, 2.0, 2.5, and 3.0m.
WinZip
192.1
https://doi.org/10.5066/P9W91314
Data can be downloaded using the Network_Resource_Name link then scrolling down to the Simulation Data section.
none
20230516
U.S. Geological Survey, Pacific Coastal and Marine Science Center
PCMSC Science Data Coordinator
mailing and physical
2885 Mission Street
Santa Cruz
CA
95060-5792
US
831-460-4747
831-427-4748
pcmsc_data@usgs.gov
Content Standard for Digital Geospatial Metadata
FGDC-STD-001-1998