Interactive Maps
![](/images/MD_physio.png)
Maryland Physiographic Provinces (with elevation profile tool)
![](/images/2017_pot_maps.png)
2017 Potentiometric Surface Maps of 5 Coastal Plain Confined Aquifers
![](/images/core_mapper.png)
Land-Based Cores in the MGS Collection
![](/images/cuttings_mapper.png)
Drill Cuttings in the MGS Collection
![](/images/earthquakes.png)
Approximate Epicenters of Historic Earthquakes in and near Maryland since 1758
![](/images/wl_mapper.png)
Groundwater Level Mapper
![](/images/geologs.png)
Coastal Plain Geophysical and Lithologic Logs
![](/images/arsenic.png)
Arsenic in the Aquia and Piney Point aquifers
![](/images/models.png)
MGS Groundwater-Flow Models
![](/images/2011_water_use.png)
2011 Coastal Plain Approriated Groundwater Use
![](/images/tour.png)
Tour Maryland Geology
![](/images/1968_geomap.png)
Geologic Map of Maryland (1968)
![](/images/baltimore_building_stones.png)
Geologic Walking Tour of Building Stones of Downtown Baltimore
![](/images/cave_map.png)