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USGS 01591000 PATUXENT RIVER NEAR UNITY, MD

PROVISIONAL DATA SUBJECT TO REVISION

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LOCATION.--Lat 39°14'17.7", long 77°03'20.6", Montgomery County, Hydrologic Unit 02060006, on right
   bank at downstream side of bridge on State Highway 97, 0.6 mi upstream from Cattail Creek, 0.8 mi upstream
   from Triadelphia Reservoir, 1.1 mi northeast of Unity, and 97 mi upstream from mouth.
DRAINAGE AREA.--34.8 mi2.
PERIOD OF RECORD.--July 1944 to current year.
REVISED RECORDS.--WSP 1111: 1947.  WSP 1432: 1948. http://waterdata.usgs.gov/nwis/dv/?site_no=01591000: 2013.
GAGE.--Water stage recorder, crest-stage gage and concrete control. Datum of gage is 364.04 ft above 
   North American Vertical Datum of 1988. Prior to Aug. 14, 1946, non-recording gage at same site and gage datum.
REMARKS.--U.S. Geological Survey satellite data-collection platform at station.
EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 21,800 ft3/s, Sept. 11, 1971,
   gage height, 18.60 ft; minimum discharge, 0.20 ft3/s,  Sept. 10-12, 1966.
COOPERATION.--Funding for the operation of this station is provided by the Washington Suburban Sanitary
   Commission, 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
All 2 Available Parameters for this site
  
00060 Discharge 2007-10-01  2017-06-22
00065 Gage height 2007-10-01  2017-06-22

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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: 16 06-22-2017   21:45 EST
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Daily discharge, cubic feet per second -- statistics for Jun 22 based on 72 years of record more
Min
(1969)
25th
percen-
tile
Most Recent
Instantaneous
Value Jun 22
Median 75th
percen-
tile
Mean Max
(1972)
7.4 14 16 23 40 68 2400


Gage height, feet

Most recent instantaneous value: 2.09 06-22-2017   21:45 EST
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