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Download geologic and hydrologic maps and datasets

Information about the Geology and Hydrogeology of Delaware

Learn about fossils found in Delaware

Hydrogeologic data and information for Delaware

The Delaware Geological Survey publication catalog

Research and educational projects of the DGS

Summary of Water Conditions in Delaware

DGS Annual Report of Programs and Activities

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Meet the people that make up the DGS

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Latest News

Celebrate Geologic Map Day on October 13, 2023
Earth Science Week is October 8 - 14, 2023 - 'Geoscience Innovating for Earth and People'
PRESS RELEASE: Delaware Geological Survey releases report on aquifers and groundwater pumping in Kent and Sussex Counties
PRESS RELEASE: RI 84 "Estimating Evapotranspiration for 2016 Growing Season Using Landsat 8 Data and Metric Model in Sussex County, Delaware”

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Did You Know?

Delaware State Fossil - The Belemnite

On July 2, 1996, Belemnitella americana was named as the official fossil of Delaware. The Martin Luther King, Jr. Elementary School (Wilmington)…