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ICE EFFECTS ON STREAMFLOW -- During cold weather, ice effects on stage and discharge determinations at some streamgages are likely. Streamgages experiencing ice conditions will have the discharge record temporarily disabled to prevent the display of erroneous discharge values. The discharge record will resume when it is determined that ice conditions are no longer present. Adjustment of data for ice effects can only be done after detailed analysis.
For information about dam operations, call 1-888-457-4076 or contact Exelon Energy (http://www.exeloncorp.com/)
LOCATION.-- Lat 39°39'28.4", long 76°10'28.0", Harford County, Hydrologic Unit 02050306, 1.0 mi southwest of Conowingo, and 9.9 mi upstream from mouth. DRAINAGE AREA.--27,100 mi2 PERIOD OF RECORD.--October 1967 to current year. GAGE.--Water-stage recorder. Datum of gage is 4.16 ft above North American Vertical Datum of 1988. REMARKS.--Flow regulated by Conowingo Reservoir beginning October 1928, usable capacity, 55,070,000,000 gal; dead storage, 45,290,000,000 gal. Records do not include a small infrequent diversion upstream from station to augment municipal supply of city of Baltimore. Records of diversion available from Baltimore City Department of Public Works. U.S. Geological Survey satellite data-collection platform at station. EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 1,130,000 ft3/s, June 24, 1972, gage height, 36.83 ft; minimum discharge, 144 ft3/s, Mar. 2, 1969. COOPERATION.--Funding for the operation of this station is provided by the Exelon Energy Corporation, and the U.S Geological Survey. Access to gage site provided by Exelon Energy Corporation.
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Value Mar 28