Projected groundwater emergence and shoaling along the U.S. North Eastern coasts 2025-12-04T00:00:00 Kevin M. Befus U.S. Environmental Protection Agency Center for Public Health and Environmental Assessment raster digital data Water table depths for different scenarios. Future coastal groundwater hazards along the U.S. North Eastern coasts 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 image services of water table depth in specific depth ranges (lt 0 m, 0 m, 1 m, 2 m, 3-5 m, gt 5 m). Scenarios include: Kzell0p1_slr0p00m, Kzell0p1_slr0p25m, Kzell0p1_slr0p50m, Kzell0p1_slr1p00m, Kzell0p1_slr1p50m, Kzell0p1_slr2p00m, Kzell0p1_slr2p50m, Kzell0p1_slr3p00m, Kzell1_slr0p00m, Kzell1_slr0p25m, Kzell1_slr0p50m, Kzell1_slr1p00m, Kzell1_slr1p50m, Kzell1_slr2p00m, Kzell1_slr2p50m, Kzell1_slr3p00m, Kzell10_slr0p00m, Kzell10_slr0p25m, Kzell10_slr0p50m, Kzell10_slr1p00m, Kzell10_slr1p50m, Kzell10_slr2p00m, Kzell10_slr2p50m, Kzell10_slr3p00m. Meridith Fry, Ph.D. U.S. Environmental Protection Agency, Center for Public Health and Environmental Assessment 202-564-5129 1200 Pennsylvania Ave NW, MC 8623R Washington DC DC 20460 US fry.meridith@epa.gov Publisher Data Categories for Marine Planning 2025-12-04T00:00:00 Physical Habitats and Geomorphology Global Change Master Directory (GCMD) 2025-12-04T00:00:00 Hazards Planning Beaches Sea Level Rise Floods Water Depth USGS Thesaurus 2025-12-04T00:00:00 Climate Change Floods Groundwater Flow Sea-level Change mathematical modeling effects of climate change earth sciences Marine Realms Information Bank (MRIB) keywords 2025-12-04T00:00:00 sea level change floods EPA-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. Environmental Protection Agency and Kevin Befus as the originators of the dataset and in products derived from these data. This information is not intended for navigation purposes. 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. Environmental Protection Agency (EPA), 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. Future coastal groundwater hazards along the U.S. North Eastern coasts 2025-01-01T00:00:00 U.S. Environmental Protection Agency Center for Public Health and Environmental Assessment data release true -77.636105 -69.949024 45.296173 37.847600 oldest dataset used through year of publication 2015-01-01T00:00:00 2025-01-01T00:00:00 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 EPA. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. EPA GIS Keyword Thesaurus 2007-11-02T00:00:00 https://www.epa.gov/geospatial/epa-metadata-technical-specification EPA Metadata Technical Specification Environment Ground Water Water Federal Program Inventory 2013-09-16 https://www.performance.gov/federalprograminventory Federal Program Inventory 020:072 Geoscientific Inland Waters Oceans United States Physical Habitats and Geomorphology Hazards Planning Beaches Sea Level Rise Floods Water Depth Climate Change Groundwater Flow Sea-level Change mathematical modeling effects of climate change earth sciences sea level change floods Environment Ground Water Water IT / Data Management (Science and Technology Environmental Programs and Management Superfund Leaking Underground Storage Tanks) USEPA United States, Maine, New Hampshire, Massachusetts, Rhode Island, Connecticut, New York, New Jersey, Pennsylvania, Delaware, Maryland, Virginia, Washington DC This series of image services display water table depth for various sea level rise scenarios and hydraulic conductivity multipliers of 0.1, 1, or 10. Meridith Fry, Ph.D. U.S. Environmental Protection Agency, Center for Public Health and Environmental Assessment 202-564-5129 1200 Pennsylvania Ave NW, MC 8623R Washington DC DC 20460 US fry.meridith@epa.gov U.S. Environmental Protection Agency, Center for Public Health and Environmental Assessment 202-564-5129 1200 Pennsylvania Ave NW, MC 8623R Washington DC DC 20460 US fry.meridith@epa.gov Image service 11.3 Image services created from mosaicked TIFs. Each image service displays a class for the SLR with hydraulic conductivity multipliers of 0.1, 1, or 10. https://geopub.epa.gov/ArcGIS/rest/services/OLEM_WTD Each image service displays a class for the SLR with hydraulic conductivity multipliers of 0.1, 1, or 10. 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. Individual water table depth TIFs by state were mosaicked together for each scenario, then published as image services. The image services include SLR scenarios with hydraulic conductivity multipliers of 0.1, 1, and 10. projected water table depths Raster of projected water table depths for the SLR and K case specified. Kevin Befus Scenario Hydraulic conductivity (Kzell in m/day) and sea level rise scenario (m above ~2020 MHHW) producer defined Kzell0p1_slr0p00m_10m_wtbins Results for binned water table depths for the scenario using a K value of Kzell0p1 and a sea level of slr0p00m above MHHW. producer defined 20251204 ArcGIS Metadata 1.0 1.0 150000000 5000 ISO19139 B150B2F1-3335-4E40-8567-CD406A385061 EPA Public Domain License https://edg.epa.gov/EPA_Data_License.html