PROVISIONAL DATA SUBJECT TO REVISION

LOCATION.--Lat 38°59'28", long 79°10'34", NAD 27, Grant County, 
        Hydrologic Unit 02070001,on right bank 1.1 mi downstream from 
        North Fork South Branch Potomac River, 2.6 mi west of Petersburg, 
        and at mile 74.7.
DRAINAGE AREA.--651 mi2.
PERIOD OF RECORD.--June 1928 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 951: 1939-41. WSP 1141: 1932, 1933(M), 1936-38.
GAGE.--Water-stage recorder with satellite telemeter. Datum of gage is 
        968.34 ft above NGVD 29. Prior to Dec. 4, 1928, nonrecording gage 
        and June 1928 to Nov. 5, 1985, water-stage recorder at site 
        1,125 ft downstream at datum 6.34 ft lower. Nov. 5, 1985, to 
        June 22, 1994, and October 23, 1996 to current year, water-stage 
        recorder at present site and datum. June 22, 1994, to October 23, 
        1996, water-stage recorder at site 325 ft downstream at datum 
        2.34 ft lower.
EXTREMES OUTSIDE PERIOD OF RECORD.--Flood in 1877 reached a stage of 
        21.2 ft, from floodmarks at previous site and datum, about 
        59,000 ft3/s.

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