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LOCATION.--Lat 39°32'29.3", long 76°19'48.4", Harford County, MD, Hydrologic Unit 02060003, 
   on right bank 30 ft downstream from bridge on State Highway 22, 1.0 mi east of Bel Air,
   and 8.5 mi upstream from mouth.
DRAINAGE AREA.--8.52 mi2.
PERIOD OF RECORD.--June 1944 to April 1951, July 1955 to September 1970. Annual maximum, water years 1971-72.
   June 1999 to current year.
REVISIONS HISTORY.--WDR-US-2010: 1999-2001, 2003-2009 (P), 1999, 2003, 2005-06, 2008, 
   https://waterdata.usgs.gov/nwis/dv/?site_no=01581500: 2014.

   The date of Measurement 238S was revised to Aug. 1, 1971. The revision was made on May 4, 2021.
GAGE.--Water-stage recorder and crest-stage gage. Datum of gage is 250.08 ft above North American Vertical
   Datum of 1988.
REMARKS.--U.S. Geological Survey satellite data-collection platform at station.
EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 5,600 ft³/s, Aug. 20, 2015, gage height, 11.15 ft;
   minimum discharge, 0 ft³/s, no flow, Sept. 8-10, 1966.
COOPERATION.--Funding for the operation of this station is provided by the Harford County Department of Public 
   Works, and the U.S. Geological Survey.
Boating safety tips
This station managed by the MD-DE-DC Water Science Center Baltimore office.

Available Parameters Available Period
1999-06-04  2021-09-24
2007-10-01  2021-09-24


  -- or --



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

Discharge, cubic feet per second

Most recent instantaneous value: 15.9 09-24-2021   16:15 EDT
Graph of  Discharge, cubic feet per second

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Daily discharge, cubic feet per second -- statistics for Sep 24 based on 45 water years of record more
Median 75th
Mean Most Recent
Value Sep 24
0.39 1.5 2.3 5.8 6 15.9 44.4

Gage height, feet

Most recent instantaneous value: 0.81 09-24-2021   16:15 EDT
Graph of  Gage height, feet

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