Water Resources of Maryland, Delaware, and the District of Columbia
Welcome to the homepage of the Maryland-Delaware-District of Columbia Water Science Center of the United States Geological Survey (USGS).
Here, you can find information about our projects, publications, and other activities. We also maintain and monitor a network of real-time data-collecting sites throughout the region.
Read our Science Strategy to learn more about our goals and operations.
Seminars and Events at the USGS!
Visit this page for news and information about seminars and other events being held at the MD-DE-DC Water Science Center
Monthly Water Conditions Summary
April 2008 : USGS Maryland-Delaware-DC Monthly Water Conditions Summary
Water Data
To view monthly ground water levels, streamflow statistics, and other information about the water resources of the area, visit our Water Data page.
StreamStats
StreamStats is map-enabled Web application that can provide users with streamflow statistics, basin characteristics, and other information for USGS data-collection stations and for ungaged sites. Users can select data-collection station locations shown on a map interface and obtain previously published information for the stations. Users can also select any location along a stream and obtain the drainage-basin boundary, basin characteristics, and estimated streamflow statistics for the location.
USGS Hot Topics
Instantaneous Data Archive
Access historical instantaneous streamflow data with the new USGS online database: Instantaneous Data Archive (IDA)
New Publication Available
SIR 2007-5165
Lorah and others, Microbial Consortia Development and Microcosm and Column
Experiments for Enhanced Bioremediation of Chlorinated Volatile Organic
Compounds, West Branch Canal Creek Wetland Area, Aberdeen Proving
Ground, Maryland, 92p.
CIRC 1316
Scott W. Phillips, Editor, Synthesis of U.S. Geological Survey Science for the Chesapeake Bay Ecosystem and Implications for Environmental Management, 71p.
SIR 2007-5249
By Daniel J. Soeder, Jeff P. Raffensperger, and Mark R. Nardi, Effects of Withdrawals on Ground-Water Levels in Southern Maryland and the Adjacent Eastern Shore, 1980-2005, 94p.
New Online Posters Available
Streamflow and Water-Quality Monitoring in Montgomery County, Maryland
By Brenda Majedi, Cherie Miller, Anthony Modugno, Bill Davies
