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* IMPORTANT: Next Generation Station Page

USGS 01593500 LITTLE PATUXENT RIVER AT GUILFORD, MD

PROVISIONAL DATA SUBJECT TO REVISION

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LOCATION.--Lat 39°10'03.9", long 76°51'04.5", Howard County, MD, Hydrologic Unit 02060006, on left bank 
   25 ft downstream from bridge on Guilford Road (formerly State Highway 32), 1 mi west of Guilford, 
   3 mi upstream from Middle Patuxent River, 4 mi north of Laurel, and 20.1 mi upstream from mouth.
DRAINAGE AREA.--38.0 mi2.
PERIOD OF RECORD.--April 1932 to current year. Monthly discharge only for April 1932, published in WSP 1302.
REVISIONS HISTORY.--WSP 1502: 1933, 1934(M), 1939(M), 1945(M), 1948(P).
GAGE.--Water-stage recorder and crest-stage gage. Concrete control since June 20, 1946. Datum of gage is 258.56 ft
   above North American Vertical Datum of 1988.  Prior to June 25, 1946, nonrecording gage at same site
   and gage datum.
REMARKS.--Low flow affected by regulation from unknown source. U.S. Geological Survey satellite
   data-collection platform at station. Water-quality records for some prior periods have been collected at
   this location.
EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 12,400 ft3/s, June 22, 1972, gage height, 18.38 ft;
   minimum discharge, 0.0 ft3/s, Sept. 6-12, 1966.
COOPERATION.--Funding for the operation of this station is provided by the Maryland State Highway
   Administration, and the U.S. Geological Survey.
This station managed by the MD-DE-DC Water Science Center Baltimore office.

Available Parameters Available Period
  
1990-10-01  2020-01-24
2007-10-01  2020-01-24







 (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: 26.6 01-24-2020   11:00 EST
Graph of  Discharge, cubic feet per second

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Daily discharge, cubic feet per second -- statistics for Jan 24 based on 86 water years of record more
Min
(1955)
25th
percen-
tile
Most Recent
Instantaneous
Value Jan 24
Median 75th
percen-
tile
Mean Max
(1979)
12.0 24 26.6 36 50 54 635


Gage height, feet

Most recent instantaneous value: 2.67 01-24-2020   11:00 EST
Graph of  Gage height, feet

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