TidalMapLittle Patuxent River at Guilford, MD Water Level Today
NWS river forecast
| When | Stage | Flow |
|---|
Forecast from the NOAA National Water Prediction Service. Issued a few times a day and only while a forecast is active. Not for navigation.
Last 30 days
About this gauge
USGS gauge 01593500 sits on the Little Patuxent River and reads everything draining 38 square miles of the Patuxent basin. Its datum sits 258 feet above sea level NAVD88. Daily flow has been on record here since 1932, 94 years of it.
Where this gauge sits in the drainage
No gauged site sits above this one on the mainstem, so this is the first published reading on the river. Downstream the next reading comes from Little Patuxent River at Savage, MD at 98 square miles, so what passes this gauge is about 39% of the water measured there. Water passing here goes on to Patuxent River near Bowie, MD.
Normal flows here
The Little Patuxent River runs a median of 26 cfs at this gauge across 94 years of record. March is the fullest month at a median 43 cfs, and September the leanest at 13 cfs. The highest daily mean on record is 4,680 cfs in 1972, and the lowest is 0.0 cfs in 1966.
| Month | Median flow | Share of annual median |
|---|---|---|
| Jan | 33 cfs | 127% |
| Feb | 38 cfs | 146% |
| Mar | 43 cfs | 165% |
| Apr | 39 cfs | 150% |
| May | 33 cfs | 127% |
| Jun | 24 cfs | 90% |
| Jul | 17 cfs | 65% |
| Aug | 14 cfs | 54% |
| Sep | 13 cfs | 50% |
| Oct | 14 cfs | 54% |
| Nov | 20 cfs | 77% |
| Dec | 28 cfs | 108% |
Medians from the USGS daily-statistics record, 1932 to 2026. A month at 100% is running at its own long-term median.
Flood stages and record crests
The Little Patuxent River reaches flood stage at this gauge at 12 feet. NWS starts watching it at 8 feet. The highest crest on record is 18.4 feet, in June 1972.
| Category | Gage height |
|---|---|
| Action | 8 ft |
| Minor flooding | 12 ft |
| Moderate flooding | 16 ft |
| Major flooding | 20 ft |
| When | Crest |
|---|---|
| June 1972 | 18.4 ft |
| May 2018 | 15.2 ft |
| June 2006 | 15.1 ft |
| July 2016 | 15 ft |
| September 2011 | 14.1 ft |
Flood categories and crest history from the NOAA National Water Prediction Service, gauge LPGM2. Stages are gage height, not depth. Not for navigation.
Nearby river gauges
- Little Patuxent River at Savage, MD
- Patuxent River near Laurel, MD
- Patapsco River near Catonsville, MD
- Patapsco River near Elkridge, MD
- Patapsco River at Hollofield, MD
- Patuxent River below Brighton Dam near Brighton MD
- Paint Branch Tributary near Colesville, MD
- Dead Run near Catonsville, MD
- Hawlings River near Sandy Spring, MD
- East Branch Herbert Run at Arbutus, MD
- Paint Branch near College Park, MD
- Dead Run Tributary near Woodlawn, MD
Live streamflow and gage height: USGS gauge 01593500. Percentile context computed against the gauge's period of record. Not for navigation.
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