PROVISIONAL DATA SUBJECT TO REVISION

LOCATION.--Lat 39°34'56", long 78°18'36", NAD 27, Morgan County, 
        Hydrologic Unit 02070003, on left bank at Rock Ford, 3.0 mi 
        southwest of Great Cacapon, and at mile 6.1.
DRAINAGE AREA.--675 mi2.
PERIOD OF RECORD.--December 1922 to September 1995, October 1996 to 
        September 2001 (measurements, daily mean discharges, and annual 
        maximums); October 2001 to September 2004 (measurements, daily 
        mean discharges, annual maximums, and discharges at one hour or 
        less intervals); October 2004 to current year (measurements, 
        daily mean discharges, annual maximums, and gage heights and 
        discharges at one hour or less intervals).
REVISED RECORDS.--WSP 800: 1924(M). WSP 951: 1936-37. 
        WSP 1552: 1925-26(M), 1928-1929(M), 1932.
GAGE.--Water-stage recorder with satellite telemeter. Datum of gage is 
        456.78 ft above NGVD 29 (U.S. Army Corps of Engineers bench 
        mark). Prior to Nov. 10, 1933, nonrecording gage at same site 
        and datum. 
REMARKS.--High end of rating not confirmed above 3,000 ft3/s 
        since cableway removed in July 1992.
EXTREMES OUTSIDE PERIOD OF RECORD.--Flood in May 1889 reached a stage of 
        about 24.7 ft, from floodmarks, discharge, 57,500 ft3/s.

This gaging station is maintained in cooperation with:
        State of West Virginia