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Welcome to our Water Science Center! Water resources of Maryland, Delaware, and the District of Columbia consist of numerous streams, springs, lakes, and aquifer systems. Streamflow, groundwater levels, and water-quality data are collected at numerous locations, and water-use data are collected throughout the area in cooperation with other federal, state and local agencies, universities, and resea
We’ve created a series of websites thematically named to characterize our work as “Capabilities”. Our highly skilled staff work with a diverse array of cooperative partners to produce the high-quality output for which the USGS is world-renown.
Explore real-time streamflow, groundwater, and water-quality conditions and access data for MD, DE, and DC with our new interactive map application. This application offers data displays on multiple device platforms with various basemap options.
Featured below are some popular features on the MD-DE-DC Water Science site. To better navigate our pages, please use the vertical header listing to the left side of this window.