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Patuxent River near Bowie, MD Water Level Today

Maryland · USGS gauge 01594440 · live data · Updated Oct 28, 2026

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About this gauge

USGS gauge 01594440 sits on the Patuxent River and reads everything draining 348 square miles of the Patuxent basin. Its datum sits 12 feet above sea level NAVD88. Daily flow has been on record here since 1977, 49 years of it.

Where this gauge sits in the drainage

Three gauged sites sit upstream of here. The closest is Patuxent River near Laurel, MD, reading 132 square miles. This gauge adds the 216 square miles that drain in between.

Normal flows here

The Patuxent River runs a median of 242 cfs at this gauge across 49 years of record. April is the fullest month at a median 396 cfs, and September the leanest at 134 cfs. The highest daily mean on record is 13,700 cfs in 2011, and the lowest is 56 cfs in 1986.

Median flow by month
MonthMedian flowShare of annual median
Jan292 cfs121%
Feb337 cfs140%
Mar375 cfs155%
Apr396 cfs164%
May311 cfs129%
Jun215 cfs89%
Jul165 cfs68%
Aug148 cfs61%
Sep134 cfs55%
Oct144 cfs60%
Nov192 cfs80%
Dec249 cfs103%

Medians from the USGS daily-statistics record, 1977 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 19 feet. NWS starts watching it at 17 feet. The highest crest on record is 27.9 feet, in June 1972.

NWS flood categories
CategoryGage height
Action17 ft
Minor flooding19 ft
Highest crests on record
WhenCrest
June 197227.9 ft
September 201121.1 ft
May 201420.6 ft
June 200619.2 ft
September 197918.5 ft

Flood categories and crest history from the NOAA National Water Prediction Service, gauge BOWM2. Stages are gage height, not depth. Not for navigation.

Nearby river gauges

Live streamflow and gage height: USGS gauge 01594440. Percentile context computed against the gauge's period of record. Not for navigation.

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