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  • Update May 5, 2016, North Carolina Water Science Center real-time data display up to date. Thank you for your patience.
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Data collected by the MD-DE-DC USGS Water Science Center are reported in Eastern Standard Time (EST) year-round.

Updated April 22, 2016: USGS streamflow monitoring will be discontinued at the following sites effective July 1, 2016:
  • 01487150 BUCKS BRANCH NEAR ATLANTA, DE (2014 to present)
  • 01594963 NYDEGGER RUN NEAR GORMAN, MD (2013 to present)
  • 01596050 SAVAGE RIVER NEAR AVILTON, MD (2013 to present)
  • 01597000 CRABTREE CREEK NEAR SWANTON, MD (1948 to present)
  • 01598650 SAND SPRING RUN AT FROSTBURG, MD (2006 to present)
  • 03076700 BUFFALO RUN NEAR FRIENDSVILLE, MD (2013 to present)
  • 03076800 MILL RUN AT MINERAL SPRING, MD (2013 to present)
Currently, data collection activities at these sites (map) are funded jointly by the USGS and partner agencies through the USGS Cooperative Water Program. Lack of partner funding for these sites will result in discontinuation of all monitoring activities. Questions or concerns can be directed to Jon Dillow (jjdillow@usgs.gov; 443-498-5524).



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°39'28.1", long 76°10'28.2", 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.
Boating safety tips
This station managed by the MD-DE-DC Water Science Center, Baltimore office.

Available Parameters Available Period
All 2 Available Parameters for this site
  
00060 Discharge 2007-10-01  2016-05-05
00065 Gage height 2016-01-06  2016-05-05

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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: 36,700   05-05-2016  23:30 EST
Graph of  Discharge, cubic feet per second

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Daily discharge, cubic feet per second -- statistics for May 6 based on 48 years of record more
Most Recent
Instantaneous
Value May 6
Min
(2001)
25th
percen-
tile
Median Mean 75th
percen-
tile
Max
(2011)
-- unavailable -- 10100 30900 43800 49000 59800 154000


Gage height, feet

Most recent instantaneous value: 13.24   05-05-2016  23:30 EST
Graph of  Gage height, feet

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