PROVISIONAL DATA SUBJECT TO REVISION

STATION.--01618000  POTOMAC RIVER AT SHEPHERDSTOWN, WV
LOCATION.--Lat 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 mile 184.
DRAINAGE AREA.--5,929 mi2.
PERIOD OF RECORD.--August 1928 to September 1953.  Annual maximums, water years 1954-64. July 1964 to
   September 1993.  Gage-height record and estimated discharges October 1953 to June 1964 available in files of
   the Maryland/Delaware/DC district office.
REVISED RECORDS.--WSP 756:  Drainage area.  WSP 781:  1929(M). OFR 95-0292: Drainage area.
GAGE.--Water-stage recorder.  Datum of gage is 281.00 ft above National Geodetic Vertical Datum of 1929.
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.  National Weather Service gage-height telemeter at station.  Water-quality 
   records for some prior periods have been collected at this location.
EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 335,000 ft3/s, Mar. 19, 1936,
   gage height, 42.10 ft; minimum discharge, 170 ft3/s,  Aug. 1, 1966.
EXTREMES OUTSIDE PERIOD OF RECORD.--Floods in June 1889 and May 1924 reached stages of 39.2 and 29.8 ft
   respectively, from floodmarks, discharges, about 290,000 ft3/s and 168,000 ft3/s.
COOPERATION.--Funding for the operation of this station is provided by the U.S. Geological Survey.