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USGS 01591000 PATUXENT RIVER NEAR UNITY, MD

PROVISIONAL DATA SUBJECT TO REVISION

Click to hidestation-specific text
LOCATION.--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. PERIOD OF RECORD.--July 1944 to current year. 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.
This station managed by the MD-DE-DC Water Science Center Baltimore office.

Available Parameters Available Period
  
1985-10-03  2025-12-13
2007-10-01  2025-12-13
2025-08-15  2025-12-13







 (7)
 
  -- or --

 

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

Discharge, cubic feet per second
Most recent instantaneous value: 10.8 12-13-2025   20:55 EST
Graph of Discharge, cubic feet per second

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Daily discharge, cubic feet per second -- statistics for Dec 13 based on 80 water years of record more
Min
(1982)		 Most Recent
Instantaneous
Value Dec 13		 25th
percen-
tile		 Median 75th
percen-
tile		 Mean Max
(1997)
9.90 10.8 18 25 44 49 638

Gage height, feet
Most recent instantaneous value: 2.00 12-13-2025   20:55 EST
Graph of Gage height, feet

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Stream water level elevation above NAVD 1988, in feet
Most recent instantaneous value: 366.04 12-13-2025   20:55 EST
Graph of Stream water level elevation above NAVD 1988, in feet

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