USGS Water-Year Summary 2021
01591610 PATUXENT RIVER BELOW BRIGHTON DAM NEAR BRIGHTON, MD
LOCATION - Lat 39°11'31.9", long 77°00'15.8" referenced to North American Datum of 1983, Montgomery County, MD, Hydrologic Unit 02060006, on right bank at Brighton Dam, 500 ft downstream from Triadelphia Reservoir, 1.3 mi east of Brighton, and 92 mi upstream from mouth.
DRAINAGE AREA - 78.6 mi².
- https://waterdata.usgs.gov/nwis/dv/?site_no=01591610: 2013
PERIOD OF RECORD - October 1980 to current year.
GAGE - Water-stage recorder, crest-stage gage, and concrete control. Datum of gage is 302.98 ft above North American Vertical Datum of 1988. June 1978 to October 1980, nonrecording gage 300 ft upstream on left bank at different gage datum.
EXTREMES OUTSIDE PERIOD OF RECORD - Flood of June 22, 1972, reached a discharge of 17,800 ft³/s. Data provided by Washington Suburban Sanitary Commission.
PERIOD OF DAILY RECORD - April 2013 to current year.
INSTRUMENTATION - Water-temperature sensor, April 2013 to current year.
EXTREMES FOR PERIOD OF DAILY RECORD - WATER TEMPERATURE: Maximum, 27.9°C, July 24, 2013; minimum, 0.3°C, Feb 24, 2015.