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USGS 01581920 GUNPOWDER FALLS NEAR PARKTON, MD

PROVISIONAL DATA SUBJECT TO REVISION

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Notice: The water temperature recorded by the sensor at this site may not be representative of the temperature of the water being released by Prettyboy Dam, particularly during storm events. Overland runoff and tributary inflows between the gaging station and the dam can affect the temperature of the stream at the monitoring location.

LOCATION.--Lat 39°37'08.0", long 76°41'25.1", Baltimore County, Hydrologic Unit 02060003,
   on left bank at downstream side of bridge on Falls Road, and 1.0 mi downstream from Prettyboy
   Reservoir.
DRAINAGE AREA.--81.5 mi2.
PERIOD OF RECORD.--July 2000 to current year.
REVISIONS HISTORY.--WDR-US-2007: 2004, 2006 (M).
GAGE.--Water-stage recorder and crest-stage gage. Datum of gage is 355.43 ft above North American 
   Vertical Datum of 1988. November 1982 to November 1990, non-recording gage 100 ft downstream.
REMARKS.--Flow regulated by Prettyboy Reservoir 1.0 mi upstream, beginning April 10, 1933,
   for water supply of Baltimore City (usable capacity, 20,000,000,000 gal; dead storage,
   1,080,000,000 gal). U.S. Geological Survey satellite data-collection platform at station.
EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 9,000 ft3/s, September 8, 2011,
   gage height, 11.62 ft; minimum discharge, 5.0 ft3/s, Oct. 24, 2002.
COOPERATION.--Funding for the operation of this station is provided by the Baltimore City
   Department of Public Works, and the U.S. Geological Survey.

This station managed by the MD-DE-DC Water Science Center Baltimore office.

Available Parameters Available Period
  
2011-03-09  2019-12-07
2000-07-19  2019-12-07
2007-10-01  2019-12-07







 (7)
 

  -- or --

 


 

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


Temperature, water, degrees Celsius, [15 ft downstream of gage]

Most recent instantaneous value: 8.0 12-07-2019   03:00 EST
Graph of  Temperature, water, degrees Celsius, [15 ft downstream of gage]

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Discharge, cubic feet per second

Most recent instantaneous value: 53.5 12-07-2019   03:00 EST
Graph of  Discharge, cubic feet per second

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Daily discharge, cubic feet per second -- statistics for Dec 7 based on 18 water years of record more
Min
(2003)
25th
percen-
tile
Most Recent
Instantaneous
Value Dec 7
Median Mean 75th
percen-
tile
Max
(2012)
15.0 35 53.5 68 90 138 229


Gage height, feet

Most recent instantaneous value: 1.72 12-07-2019   03:00 EST
Graph of  Gage height, feet

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