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Hydrologic Data

Delaware is primarily a water state and monitors the environmental hydrologic conditions closely. The links below provide information on data sets related to hydrologic information in Delaware.

USGS National Water Information System (NWIS)

NOAA National Ocean Service (NOS)

DGS Groundwater

Hydrographic Mapping

  • GIS data sets of Delaware rivers, streams, and other water bodies, including watersheds at various scales, are available through the USGS National Hydrography Dataset. Data access is described on the DEMAC Delaware Basemap page.

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