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Patuxent River near Laurel, MD Water Level Today

Maryland · USGS gauge 01592500 · live data · Updated Oct 28, 2026

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About this gauge

USGS gauge 01592500 sits on the Patuxent River and reads everything draining 132 square miles of the Patuxent basin. Its datum sits 153 feet above sea level NAVD88. Daily flow has been on record here since 1945, 82 years of it.

Where this gauge sits in the drainage

Two gauged sites sit upstream of here. The closest is Patuxent River below Brighton Dam near Brighton MD, reading 79 square miles. This gauge adds the 53 square miles that drain in between. Downstream the next reading comes from Patuxent River near Bowie, MD at 348 square miles, so what passes this gauge is about 38% of the water measured there.

Normal flows here

The Patuxent River runs a median of 23 cfs at this gauge across 82 years of record. March is the fullest month at a median 91 cfs, and September the leanest at 21 cfs. The highest daily mean on record is 13,000 cfs in 1972, and the lowest is 1.1 cfs in 1956.

Median flow by month
MonthMedian flowShare of annual median
Jan25 cfs109%
Feb57 cfs248%
Mar91 cfs396%
Apr88 cfs380%
May52 cfs226%
Jun24 cfs104%
Jul23 cfs100%
Aug22 cfs96%
Sep21 cfs91%
Oct21 cfs91%
Nov21 cfs91%
Dec22 cfs96%

Medians from the USGS daily-statistics record, 1945 to 2026. A month at 100% is running at its own long-term median.

Flood stages and record crests

The Patuxent River reaches flood stage at this gauge at 9.5 feet. NWS starts watching it at 8.5 feet. The highest crest on record is 25 feet, in June 1972.

NWS flood categories
CategoryGage height
Action8.5 ft
Minor flooding9.5 ft
Moderate flooding13 ft
Highest crests on record
WhenCrest
June 197225 ft
September 197519.8 ft
July 195618.9 ft
September 197118.5 ft
May 201414.8 ft

Flood categories and crest history from the NOAA National Water Prediction Service, gauge LPRM2. Stages are gage height, not depth. Not for navigation.

Nearby river gauges

Live streamflow and gage height: USGS gauge 01592500. Percentile context computed against the gauge's period of record. Not for navigation.

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