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GALDIT: Groundwater Vulnerability Index (UMD)
This layer shows the vulnerability of Maryland’s aquifers to saltwater intrusion, based on the GALDIT index. GALDIT evaluates vulnerability based on six parameters: groundwater... -
(A) Aquifer Hydraulic Conductivity (m/day) (UMD)
This layer shows aquifer hydraulic conductivity for cropland areas in Maryland, representing the 'A' parameter in the GALDIT groundwater vulnerability index. GALDIT evaluates... -
(G) Groundwater Aquifer Type (UMD)
This layer shows groundwater aquifer type for cropland areas in Maryland, representing the 'G' parameter in the GALDIT groundwater vulnerability index. GALDIT evaluates... -
(L) Groundwater Level Above Sea Level (m) (UMD)
This layer shows groundwater level above sea level for cropland areas in Maryland, representing the 'L' parameter in the GALDIT groundwater vulnerability index. GALDIT evaluates... -
(D) Distance from Shoreline (m) (UMD)
This layer shows distance from shoreline for cropland areas in Maryland, representing the 'D' parameter in the GALDIT groundwater vulnerability index. GALDIT evaluates... -
(I) Impact of Present Cl Content (mg/L) (UMD)
This layer shows the impact of present chloride (Cl) content for cropland areas in Maryland, representing the 'I' parameter in the GALDIT groundwater vulnerability index. GALDIT... -
(T) Aquifer Thickness (m) (UMD)
This layer shows aquifer thickness for cropland areas in Maryland, representing the 'T' parameter in the GALDIT groundwater vulnerability index. GALDIT evaluates vulnerability... -
Slope (Percent Derived from Bare Earth DEM 10m)
This layer represents the slope of the terrain in Maryland, derived from high-resolution Bare Earth Digital Elevation Models (DEMs) at a 10 meter resolution. The slope is... -
Aspect (Derived from Bare Earth DEM 10m)
This layer represents the aspect of the terrain in Maryland, derived from high-resolution Bare Earth Digital Elevation Models (DEMs) at a 10 meter resolution. Aspect is the... -
Elevation (Bare Earth 10m)
This layer shows high-resolution elevation data for Maryland, collected using Light Detection and Ranging (LiDAR) technology. The data represents precise Digital Elevation... -
Maryland Hyper-Resolution Hydrography Stream Line (USGS)
This layer shows high-resolution stream lines within Maryland, including headwater and low-order stream channels that may be absent from standard hydrography datasets. The data... -
High Tide Flooding Inundation Extent (NOAA)
This layer shows areas in Maryland that are susceptible to minor tidal flooding, referred to as "nuisance flooding," during high tide events. The data is sourced from NOAA’s Sea... -
Sea Level Rise Extent, 2 Feet Above Average High Tide (NOAA)
This layer depicts ocean-connected sea level rise for 2 feet above Mean Higher High Water, which represents the average high tide level at the current sea level. It shows both... -
Sea Level Rise Extent, 1.5 Feet Above Average High Tide (NOAA)
This layer depicts ocean-connected sea level rise for 1.5 feet above Mean Higher High Water, which represents the average high tide level at the current sea level. It shows both... -
Sea Level Rise Extent, 1 Feet Above Average High Tide (NOAA)
This layer depicts ocean-connected sea level rise for 1 foot above Mean Higher High Water, which represents the current average high tide level. It shows both how far the water... -
Sea Level Rise Extent, 0.5 Feet Above Average High Tide (NOAA)
This layer depicts ocean-connected sea level rise for 0.5 feet above Mean Higher High Water, which represents the current average high tide level. It shows both how far the... -
Sea Level Rise Extent, 0 Feet Above Average High Tide (NOAA)
This layer depicts ocean-connected sea level rise for 0 feet above Mean Higher High Water, which represents the current average high tide level. The data is sourced from NOAA’s... -
Land Use Classification (USGS NLCD 2019 30m)
This layer displays land cover classifications across Maryland as of 2019 at a resolution of 30 meters. The data provides a detailed representation of land use and cover... -
Top 10 Crops 2023 (USDA NASS CDL 30m)
This layer shows the primary cropland areas and crop types for the top 10 crops in Maryland, as classified by the 2023 USDA NASS Cropland Data Layer (CDL). The data represent... -
Top 10 Crops 2013 to 2023 Average (USDA NASS CDL 30m)
This layer shows the primary cropland areas and crop types for the top 10 crops in Maryland, averaged over the 2013 to 2023 period, as classified by the USDA NASS Cropland Data...