TidalMapHerring Run at Sinclair Lane at Baltimore, 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 01585219 sits on Herring Run and reads everything draining 16 square miles of the Gunpowder-Patapsco basin. Its datum sits 31 feet above sea level NAVD88. Daily flow has been on record here since 2014, 12 years of it.
Normal flows here
Herring Run runs a median of 30 cfs at this gauge across 12 years of record. March is the fullest month at a median 36 cfs, and September the leanest at 24 cfs. The highest daily mean on record is 1,290 cfs in 2014, and the lowest is 5.4 cfs in 2025.
| Month | Median flow | Share of annual median |
|---|---|---|
| Jan | 33 cfs | 110% |
| Feb | 35 cfs | 117% |
| Mar | 36 cfs | 120% |
| Apr | 32 cfs | 107% |
| May | 32 cfs | 107% |
| Jun | 32 cfs | 105% |
| Jul | 30 cfs | 100% |
| Aug | 28 cfs | 93% |
| Sep | 24 cfs | 80% |
| Oct | 25 cfs | 83% |
| Nov | 26 cfs | 87% |
| Dec | 30 cfs | 100% |
Medians from the USGS daily-statistics record, 2014 to 2025. A month at 100% is running at its own long-term median.
Nearby river gauges
- Moores Run at Radecke Ave at Baltimore, MD
- West Branch Herring Run at Idlewylde, MD
- Whitemarsh Run near Fullerton, MD
- Minebank Run near Glen Arm, MD
- Long Quarter Branch at Lutherville, MD
- Whitemarsh Run at White Marsh, MD
- Honeygo Run near White Marsh, MD
- Long Green Creek at Glen Arm, MD
- East Branch Herbert Run at Arbutus, MD
- Dead Run at Franklintown, MD
- Sawmill Creek at Glen Burnie, MD
- Dead Run at Woodlawn, MD
Live streamflow and gage height: USGS gauge 01585219. Percentile context computed against the gauge's period of record. Not for navigation.
Open Herring Run at Sinclair Lane at Baltimore, MD on the live chart →
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