Unified Interior Regions

District of Columbia

Washington, D.C., the capital of the United States is located in the mid-Atlantic region of the U.S. East Coast and had an estimated population of 672,228 as of July 2015. The Potomac River forms the District's border with Virginia and has two major tributaries: the Anacostia River and Rock Creek.The District has 7,464 acres of parkland, occupying about 19% of the city's total area.

Maryland - Delaware - Washington D.C. Water Science Center

Maryland -  Delaware - Washington D.C.  Water Science Center

5522 Research Park Drive
Catonsville, MD 21228

Phone: 443-498-5500
Fax: 442-498-5510

MD-DE-DC Water

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USGS
October 1, 1998

Streamflow in the Potomac River near Washington, D.C., was below average during September, but in the just-completed 1998 water year (WY98) year-long streamflow was the second highest on record, according to hydrologists at the U.S. Geological Survey.

USGS
September 30, 1998

Many of the fish lesions in Chesapeake Bay may be caused by a fungal infection rather than Pfiesteria, a U.S. Geological Survey scientist reported recently at the International Symposium on Aquatic Animal Health Conference in Baltimore

USGS
September 3, 1998

The steady precipitation over the Potomac drainage basin for the first several months of 1998 has resulted in a record-high flow of about 90 billion gallons per day (bgd) for the year so far, about 8% higher than flow by this time in 1996, when Potomac River flow set a new all-time high record of about 83. bgd.

USGS
August 27, 1998

Four U.S. Geological Survey crews will be in the field on Maryland’s lower Eastern Shore to collect water-quality samples at 16 stream sites in the Pocomoke, Wicomico, Manokin, and Transquaking River basins.

USGS
August 3, 1998

The average daily freshwater inflow to the Chesapeake Bay in the first seven months of 1998 was about 100.5 billion gallons per day (bgd), according to scientists at the U.S. Geological Survey. This is 12% higher than 1996, the year of record, when average daily inflow between January and July was about 90 bgd, and about 157% higher than the average inflow rate. Records have been kept since 1951.

USGS
May 1, 1998

Streamflow in April into the Chesapeake Bay was about 115 billion gallons per day (bgd) and flow in the Potomac River was about 19 bgd, in the normal range for the first time in 1998. Hydrologists at the U.S. Geological Survey state that, while flows are still above average, they are well within normal expected limits.

USGS
March 3, 1998

February streamflow in the Potomac River at Washington, DC, and total flow into the Chesapeake Bay were the highest on record for February, according to the U. S. Geological Survey (USGS). 

USGS
February 4, 1998

Although the Potomac River continues to flow at well above normal levels, the immediate impact of the day’s steady rain on the flow of the Potomac near Washington, D.C. has been slight, according to hydrologists at the U.S. Geological Survey.

USGS
February 3, 1998

January streamflow in the Potomac River at Washington, DC, and total flow into the Chesapeake Bay were the second-highest on record, exceeded only by flows in January, 1996, according to the U. S.Geological Survey (USGS). The generally wetter-than normal conditions increase the likelihood of flooding from storms that may follow.

USGS
December 9, 1997

About half the high nitrate concentrations in nontidal streams and rivers that contribute to the decline of fish populations in Chesapeake Bay come from underground sources, according to research findings presented by the U.S. Geological Survey (USGS) today (Dec 9. 1997).

USGS
December 1, 1997

A poster produced from satellite images of the Chesapeake Bay watershed will aid a multi-state effort to restore and manage the Bay’s resources, according to the U.S. Geological Survey.

USGS
October 8, 1997

Analysis of Chesapeake Bay sediment cores collected by the U.S. Geological Survey and the University of Maryland Center for Environmental and Estuarine Studies (CEES) indicates that some of the sediment samples dating back hundreds or thousands of years contain Pfiesteria-like organisms and other microbes. 

Maryland - Delaware - Washington D.C. Water Science Center

Maryland -  Delaware - Washington D.C.  Water Science Center

5522 Research Park Drive
Catonsville, MD 21228

Phone: 443-498-5500
Fax: 442-498-5510

MD-DE-DC Water