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

States L2 Landing Page Tabs

Filter Total Items: 177
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. 

USGS
September 26, 1997

Scientists from the U.S. Geological Survey (USGS) and other federal and state agencies involved in Chesapeake Baystudies are working together to understand the delivery of nutrients from the land into the Bay and the relationship of nutrients to Pfiesteria-like organisms and ultimately fish health.

USGS
August 15, 1997

The U.S. Geological Survey (USGS) is working with scientists from George Mason University and the Maryland Department of Natural Resources to collect a water sample from the Pocomoke River and analyze the sample for a variety of commonly used pesticides.

USGS
August 1, 1997

Total river flow into the Chesapeake Bay was about 16.2 billion gallons per day (bgd) in July, 31 percent below the normal inflow for July (23.4 bgd), according to the U.S. Geological Survey (USGS). The long-term average is based on 47 years of information.

USGS
July 8, 1997

Potomac River flow near Washington, D.C., was well above normal in June at 7.3 billion gallons per day (bgd), one and one-half times the normal flow for this time of year, according to the U.S. Geological Survey.

USGS
May 27, 1997

Several dozen scientists will gather in Baltimore on Tuesday and Wednesday (May 27-28) to compare results on efforts to better understand environmental change in the Chesapeake Bay by looking at both current trends and geologic evidence of past changes.

USGS
January 3, 1997

Total freshwater inflow into the Chesapeake Bay during 1996 was the highest ever recorded, according to the U.S. Geological Survey.

USGS
October 10, 1996

A new satellite image map of the Chesapeake Bay that will aid a multi-state effort to restore and manage the Bay’s resources was unveiled Thursday (October 10, 1996) in Harrisburg, Pa., by the U.S. Geological Survey.

USGS
October 8, 1996

Potomac River flow, near Washington, D.C., set a new record-high of 15.8 billion gallons per day (bgd) in the just-ended 1996 water year, far more than twice the long-term annual average flow of 7.2 bgd. The new record breaks the previous record of 12.3 bgd set in 1972, by 28 percent.

USGS
October 7, 1996

Total freshwater inflow to Chesapeake Bay during the period January to September 1996, was the second highest in 45 years of record, according to the U.S. Geological Survey.

USGS
September 20, 1996

Scientists will begin collecting sediment cores from the floor of Chesapeake Bay this week in the search for clues that will help explain what factors -- natural and manmade -- trigger changes in the living resources and environment of the Bay.

USGS
September 11, 1996

At 7 a.m., before the rains began, the flow of the Potomac River at the U.S. Geological Survey streamgauge near the District at Little Falls Pumping station was 36 billion gallons per day (bgd) and dropping, according to hydrologists at the U.S. Geological Survey.

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