TidalMapMorgan Run near Louisville, 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 01586610 sits on Morgan Run and reads everything draining 28 square miles of the Gunpowder-Patapsco basin. Its datum sits 422 feet above sea level NAVD88. Daily flow has been on record here since 1983, 43 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 Patapsco River at Hollofield, MD at 285 square miles, so what passes this gauge is about 10% of the water measured there. Water passing here goes on to Patapsco River near Catonsville, MD and Patapsco River near Elkridge, MD.
Normal flows here
Morgan Run runs a median of 23 cfs at this gauge across 43 years of record. April is the fullest month at a median 39 cfs, and September the leanest at 11 cfs. The highest daily mean on record is 1,370 cfs in 1996, and the lowest is 0.7 cfs in 2002.
| Month | Median flow | Share of annual median |
|---|---|---|
| Jan | 30 cfs | 130% |
| Feb | 35 cfs | 152% |
| Mar | 38 cfs | 165% |
| Apr | 39 cfs | 170% |
| May | 33 cfs | 143% |
| Jun | 22 cfs | 96% |
| Jul | 16 cfs | 70% |
| Aug | 12 cfs | 52% |
| Sep | 11 cfs | 48% |
| Oct | 13 cfs | 57% |
| Nov | 18 cfs | 78% |
| Dec | 26 cfs | 113% |
Medians from the USGS daily-statistics record, 1983 to 2026. A month at 100% is running at its own long-term median.
Flood stages and record crests
Morgan Run reaches flood stage at this gauge at 16 feet. NWS starts watching it at 12 feet. The highest crest on record is 10.7 feet, in August 2018.
| Category | Gage height |
|---|---|
| Action | 12 ft |
| Minor flooding | 16 ft |
| When | Crest |
|---|---|
| August 2018 | 10.7 ft |
| December 2003 | 8.7 ft |
| January 2013 | 8.7 ft |
| January 1996 | 8.4 ft |
| May 1989 | 8.3 ft |
Flood categories and crest history from the NOAA National Water Prediction Service, gauge MRLM2. Stages are gage height, not depth. Not for navigation.
Nearby river gauges
- Beaver Run near Finksburg, MD
- North Branch Patapsco River at Cedarhurst, MD
- Cranberry Branch near Westminster, MD
- Red Run near Owings Mills, MD
- Piney Run at Dover, MD
- Scotts Level Branch at Rockdale, MD
- Patapsco River at Hollofield, MD
- Cattail Creek near Glenwood, MD
- Sams Creek at Mckinstrys Mill, MD
- Patuxent River near Unity, MD
- Dead Run Tributary near Woodlawn, MD
- Tributary to Dead Run Tributary at Woodlawn, MD
Live streamflow and gage height: USGS gauge 01586610. Percentile context computed against the gauge's period of record. Not for navigation.
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