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Potomac River Flow Above Normal Again in July
Released: 8/1/1995

Contact Information:
U.S. Department of the Interior, U.S. Geological Survey
Office of Communication
119 National Center
Reston, VA 20192
Rebecca Phipps 1-click interview
Phone: 703-648-4460



Flow of the Potomac River near Washington, D.C., was well above normal for the second consecutive month in July, according to hydrologists at the U.S. Geological Survey.

Average flow of the Potomac was 7.3 billion gallons per day (bgd) in July, nearly two and one-half times the long-term average July flow of 3 bgd. During July, the flow varied from a high of 26.7 bgd July 1 to a low of 2.4 bgd July 29.

Freshwater inflow to the Chesapeake Bay was 39 bgd, nearly 70 percent above the normal July inflow of 23.3 bgd.

In contrast, ground-water levels are below normal. At the USGS ground-water observation well in Montgomery County, Md., the water level was about 14.9 feet below the land surface, about 1.7 feet below the long-term average level for July of 13.3 feet.

Contents of the Baltimore reservoir system decreased in July to about 75,810 million gallons, three percent below average and 10 percent below the level for July of 1994.

Diversions of Potomac River water for municipal use averaged about 448 mgd, about the same as July of last year.

ON TUES., AUG. 1, 1995, AT 3 P.M., FLOW OF THE POTOMAC NEAR THE DISTRICT WAS ABOUT 2 BGD.

Want to know more about our nation’s water resources? Call EarthFax, the new USGS earth science fax-on-demand system at (703) 648-4888 and press 3.


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