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* IMPORTANT: Next Generation Station Page

USGS 01578310 SUSQUEHANNA RIVER AT CONOWINGO, MD

PROVISIONAL DATA SUBJECT TO REVISION

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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, MD, 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.
Boating safety tips
This station managed by the MD-DE-DC Water Science Center Baltimore office.

Available Parameters Available Period
  
1988-02-02  2019-12-12
2007-10-01  2019-12-12







 (7)
 

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Summary of all available data for this site
Instantaneous-data availability statement


Discharge, cubic feet per second

Most recent instantaneous value: 66800 12-12-2019   18:30 EST
Graph of  Discharge, cubic feet per second

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Daily discharge, cubic feet per second -- statistics for Dec 12 based on 52 water years of record more
Min
(1983)
25th
percen-
tile
Median Mean 75th
percen-
tile
Most Recent
Instantaneous
Value Dec 12
Max
(2004)
1000 26800 38000 49600 61800 66800 169000


Gage height, feet

Most recent instantaneous value: 15.20 12-12-2019   18:30 EST
Graph of  Gage height, feet

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