USGS 01618000 POTOMAC RIVER AT SHEPHERDSTOWN, WV
39°26'05.0", long 77°48'05.0", Jefferson County,
Hydrologic Unit 02070004, on right bank, 0.1 mi downstream from Rumsey
Bridge at Shepherdstown, 3.3 mi upstream from Antietam Creek, and at
DRAINAGE AREA.--5,953 mi2, from automated delineation
using 30-meter National Elevation Dataset digital elevation model data,
dated December 2011.
PERIOD OF RECORD.--August 1928 to September 1953. Annual
maximums, water years 1954-64. July 1964 to September 1993, October
2000 to September 2004, September 2016 - current year. Gage-height
record and estimated discharges October 1953 to June 1964 available in
files of the MD-DE-DC WSC.
REVISIONS HISTORY.--WSP 756: Drainage area. WSP 781: 1929(M).
OFR 95-0292: Drainage area. waterdata.usgs.gov/nwis/inventory/?site_no=01618000
(2016): Drainage area.
GAGE.--Water-stage recorder and crest-stage gage. Datum of gage
is 280.26 ft above North American Vertical Datum of 1988.
REMARKS.--Some regulation at low flow by power plants upstream
from station, prior to July 1981 by Stony River Reservoir, since
December 1950 by Savage River Reservoir (see station 01597500), and
since July 1981 by Jennings Randolph Lake. Water-quality records for
some prior periods have been collected at this location. U.S.
Geological Survey satellite data-collection platform at station.
EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 335,000
ft3/s, from rating curve extended above 200,000
ft3/s, on the basis of slope-area measurement of peak flow,
Mar. 19, 1936, gage height, 42.10 ft; minimum discharge, 170 ft3/s,
Aug. 1, 1966.
EXTREMES OUTSIDE PERIOD OF RECORD.--Flood of June 1889 reached a
stage of 39.2 ft, from floodmarks, discharge, about 290,000 ft3/s.
Flood of May 1924 reached a stage of 29.8 ft, from floodmarks,
discharge, about 168,000 ft3/s.
COOPERATION.--Funding for the operation of this station is
provided by the Interstate Commission on the Potomac River Basin, the
Metropolitan Washington Council of Governments and the U. S. Geological
This station managed by the MD-DE-DC Water Science Center Frostburg office.
Summary of all available data for this site
Instantaneous-data availability statement
Most recent instantaneous value: 18400 09-22-2018 15:30 EST
Daily discharge, cubic feet per second -- statistics for Sep 22 based on 73 years of record more
|Median ||75th |
|Mean ||Most Recent |
Value Sep 22
|305 ||833 ||1050 ||2140 ||2380 ||18400 ||27300
Most recent instantaneous value: 7.58 09-22-2018 15:30 EST