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  2025-09-02
2007-10-01  2025-09-02
2025-05-04  2025-09-02







 (7)
 
  -- or --

 

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

Discharge, cubic feet per second
Most recent instantaneous value: 8.95 09-02-2025   03:55 EDT
Graph of Discharge, cubic feet per second

Add up to 2 more sites and replot for "Discharge, cubic feet per second"

?
 
Note



Create presentation-quality / stand-alone graph.   Subscribe to
?
WaterAlert      

See this graph on the Monitoring Location Pages

Share this graph |

Daily discharge, cubic feet per second -- statistics for Sep 2 based on 81 water years of record more
Min
(1966)		 25th
percen-
tile		 Most Recent
Instantaneous
Value Sep 2		 Median Mean 75th
percen-
tile		 Max
(1959)
1.30 7.5 8.95 12 20 21 300

Gage height, feet
Most recent instantaneous value: 1.90 09-02-2025   03:55 EDT
Graph of Gage height, feet

Add up to 2 more sites and replot for "Gage height, feet"

?
 
Note



Create presentation-quality / stand-alone graph.   Subscribe to
?
WaterAlert      

See this graph on the Monitoring Location Pages

Share this graph |


Stream water level elevation above NAVD 1988, in feet
Most recent instantaneous value: 365.94 09-02-2025   03:55 EDT
Graph of Stream water level elevation above NAVD 1988, in feet

Add up to 2 more sites and replot for "Stream water level elevation above NAVD 1988, in feet"

?
 
Note



Create presentation-quality / stand-alone graph.   Subscribe to
?
WaterAlert      

See this graph on the Monitoring Location Pages

Share this graph |