USGS - science for a changing world

Water Science for Maryland, Delaware and the District of Columbia


Welcome to our homepage! This site is your source for water-resources information collected and interpreted by the U.S. Geological Survey representing Maryland, Delaware, and the District of Columbia.

News & Features:

Best GW Report, 2014

WINNER! 2014 Best Groundwater Report from a Water Science Center

Hydrogeologic characterization and assessment of bioremediation of chlorinated benzenes and benzene in wetland areas, Standard Chlorine of Delaware, Inc. Superfund Site, New Castle County, Delaware, 2009–12 has been awarded "Best Groundwater Report from a Water Science Center" by the USGS Office of Groundwater
Allen Gellis

Eastern Shore Contributes Excess Nutrients into Chesapeake Bay

New Study helps explain slow water-quality improvements to management actions
Storm tide sensor map thumbnail

MD Storm-Tide Sensor Network Improved

The USGS is surveying locations throughout the state to expand the network of sensors to collect data about storms that threaten coastal communities

Team Based Projects

The USGS MD-DE-DC Water Science Center is organized into work teams to bring together projects that investigate similar water-resources issues, encourage sharing of individual expertise, data-collection methods, and personnel.

See what we're doing...

>> Fate & Bioremediation
>> Groundwater Studies
>> National & Regional Assessments
>> Surface Water Monitoring & Sediment Studies
>> Water Quality Monitoring & Modeling

USGS Water Science Center Seminars & Talks

Next seminar is Thursday, May 26, 2016

Click for Upcoming and Past Seminars

Monthly Water Conditions


April 2016 : USGS MD-DE-DC Monthly Water Conditions Summary

>> Groundwater Levels
>> Streamflow Statistics

SIR 2012-5185 Cover Page >>Scientific Investigations Report 2014–5224
Hydrogeologic Framework, Hydrology, and Refined Conceptual Model of Groundwater Flow for Coastal Plain Aquifers at the Standard Chlorine of Delaware, Inc. Superfund Site, New Castle County, Delaware, 2005–12
  >>U.S. Geological Survey Circular 1406
Understanding Nutrients in the Chesapeake Bay Watershed and Implications for Management and Restoration—The Eastern Shore

SIR 2013-5082 Cover Page >>Scientific Investigations Report 2014–5147
Sources of Fine-Grained Sediment in the Linganore Creek Watershed, Frederick and Carroll Counties, Maryland, 2008–10

  SIR 2013-5043 Cover Page >>Scientific Investigations Report 2014–5140
Hydrogeologic Characterization and Assessment of Bioremediation of Chlorinated Benzenes and Benzene in Wetland Areas, Standard Chlorine of Delaware, Inc. Superfund Site, New Castle County, Delaware, 2009–12

Image for Comprehensive
          Assessment of Water Supply in MD

NAWQA Chesapeake Bay
Maryland's water supply comes from streams and rivers, groundwater, and reservoirs. In the Baltimore region and other metropolitan areas, the primary source of water is surface water (streams or reservoirs). Water regulators, planners, and policy makers need to know how much water can be withdrawn from wells and streams without causing adverse impacts.
The National Water Quality Assessment (NAWQA) is a national program of the U.S. Geological Survey designed to provide consistent and reliable information on the quality of streams, groundwater, and aquatic ecology in the United States. Primary goals of the NAWQA program include determining the status of streams and groundwater, identifying changes over time, and understanding interacting natural and human influences on observed status and trends.
The Chesapeake Bay, the Nation's largest estuary, has been degraded due to the impact of human-population increase, which has doubled since 1950, resulting in degraded water quality, loss of habitat, and declines in populations of biological communities. Since the mid-1980s, the Chesapeake Bay Program (CBP), a multi-agency partnership which includes the Department of Interior (DOI), has worked to restore the Bay ecosystem.


Accessibility FOIA Privacy Policies and Notices

Take Pride in America logo logo U.S. Department of the Interior | U.S. Geological Survey
Page Contact Information:
Page Last Modified: Sunday, May 08, 2016

DNR Spotlight