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LOCATION.--Lat 39°25'25", long 77°56'20", referenced to North American Datum of 1927, Berkeley County, WV, Hydrologic Unit 02070004, on right bank 300 ft upstream from Evans Run, 2.3 mi upstream from Tuscarora Creek, 3.0 mi southeast of Martinsburg, and at mile 11.6. DRAINAGE AREA.--273 mi2. PERIOD OF RECORD.--May 1905 to June 1906 (monthly mean discharge published in WSP 1302, and annual maximum published in WSP 1672), July 1947 to current year (daily discharge and peaks). REVISED RECORDS.--WSP 1702: 1959. WDR WV-97-1: Drainage area, 1936(M), 1967(M), 1968(P), 1969(M). GAGE.--Water-stage recorder with satellite telemeter. Datum of gage is 354.33 ft above NAVD 88 (VERTCON conversion of 354.89 ft above NGVD 29). Prior to July 1906, nonrecording gage at approximately the same site at different datum. July 23, 1947 to July 22, 1948, nonrecording gage at present site and datum. REMARKS.--Water discharge records good except those for periods of estimated daily discharges (ice effect), which are poor. Some diurnal fluctuation at low flow caused by upstream mills in Virginia and since July 18, 1988, by wastewater treatment plant, 1,000 ft upstream from Opequon Creek near Berryville, Va (01615000); drainage area 57.4 mi2. EXTREMES OUTSIDE PERIOD OF RECORD.--Flood in March 1936 reached a stage of about 17.5 ft, from information by local residents, estimated discharge, 19,100 ft3/s. PERIOD OF RECORD (WQ).--June 2005 to current year. This gaging station is maintained in cooperation with: State of West Virginia
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