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During cold weather, ice effects on stage, groundwater levels, precipitation and water quality parameters at some stream-gaging stations and wells are likely. Data values reported on these pages may be significantly higher or lower than actual values. Adjustment of data for ice effects can only be done after detailed analysis. Users are encouraged to contact this office for more information on specific stream-gaging stations or wells.
LOCATION.--Lat 39°41'57.2", long 75°40'30.1", New Castle County, Hydrologic Unit 02040205, on left bank, 0.4 mi downstream from the Baltimore and Ohio Railroad bridge, 1.1 mi downstream from Pike Creek, 3.8 mi east of Newark, and 5.0 mi upstream from mouth. DRAINAGE AREA.--89.1 mi2. PERIOD OF RECORD.--October 1931 to September 1936, June 1943 to September 1957, October 1959 to current year. Monthly discharge only for some periods, published in WSP 1302. REVISED RECORDS.--WSP 1051: 1933(M). WSP 1382: 1932, 1934. WDR MD-DE-83-1: 1978-82(P). GAGE.--Water-stage recorder. Datum of gage is 7.86 ft above North American Vertical Datum of 1988. Nov. 17, 1931 to Sept. 30, 1936, June 4, 1943 to Sept. 30, 1957, and Oct. 1, 1959 to Apr. 7, 1976, at site 0.5 mi upstream at gage datum 2.6 ft higher. REMARKS.--Flow affected by the City of Newark municipal water treatment plant upstream from the station and by periodic withdrawals to maintain storage in the City of Newark's pumped storage reservoir. U. S. Geological Survey satellite data-collection platform at station. EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 19,500 ft3/s, Sep. 16, 1999, gage height, 17.57 ft; maximum gage-height, 17.74 ft, June 22, 1972, at previous site and gage datum; minimum discharge, 4.7 ft3/s, Sept. 11, 1966. EXTREMES OUTSIDE PERIOD OF RECORD.--Maximum stage known, 23 ft, previous site and gage datum, in July 1937 (probably affected by backwater from railroad bridge which has since been raised and widened), from information by Baltimore & Ohio Railroad. COOPERATION.--Funding for the operation of this station is provided by the Delaware Geological Survey and the U. S. Geological Survey. CRITICAL LEVELS.--Bankfull stage; 13.5 ft (3,430 ft3/s), flood stage; 13.5 ft (3,430 ft3/s), information provided by the National Weather Service.
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Value Dec 20