TidalMapEast Branch Herbert Run at Arbutus, 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 01589100 sits on East Branch Herbert Run and reads everything draining 2.5 square miles of the Gunpowder-Patapsco basin. Its datum sits 40 feet above sea level NAVD88. Daily flow has been on record here since 1957, 59 years of it.
Normal flows here
East Branch Herbert Run runs a median of 1.4 cfs at this gauge across 59 years of record. March is the fullest month at a median 2.0 cfs, and September the leanest at 1.0 cfs. The highest daily mean on record is 200 cfs in 1972, and the lowest is 0.2 cfs in 2016.
| Month | Median flow | Share of annual median |
|---|---|---|
| Jan | 1.6 cfs | 114% |
| Feb | 1.9 cfs | 136% |
| Mar | 2.0 cfs | 143% |
| Apr | 1.8 cfs | 129% |
| May | 1.6 cfs | 114% |
| Jun | 1.3 cfs | 93% |
| Jul | 1.1 cfs | 79% |
| Aug | 1.1 cfs | 79% |
| Sep | 1.0 cfs | 69% |
| Oct | 1.0 cfs | 71% |
| Nov | 1.2 cfs | 86% |
| Dec | 1.5 cfs | 107% |
Medians from the USGS daily-statistics record, 1957 to 2026. A month at 100% is running at its own long-term median.
Flood stages and record crests
East Branch Herbert Run reaches flood stage at this gauge at 7 feet. NWS starts watching it at 5 feet. The highest crest on record is 13.2 feet, in August 1999.
| Category | Gage height |
|---|---|
| Action | 5 ft |
| Minor flooding | 7 ft |
| Moderate flooding | 9 ft |
| Major flooding | 12 ft |
| When | Crest |
|---|---|
| August 1999 | 13.2 ft |
| July 2018 | 10.1 ft |
| August 2014 | 9.3 ft |
| May 2018 | 9.2 ft |
| August 2020 | 8.3 ft |
Flood categories and crest history from the NOAA National Water Prediction Service, gauge EBHM2. Stages are gage height, not depth. Not for navigation.
Nearby river gauges
- Patapsco River near Elkridge, MD
- Patapsco River near Catonsville, MD
- Dead Run at Franklintown, MD
- Dead Run near Catonsville, MD
- Dead Run at Woodlawn, MD
- Dead Run Tributary at Woodlawn, MD
- Sawmill Creek at Glen Burnie, MD
- Dead Run Tributary near Woodlawn, MD
- Tributary to Dead Run Tributary at Woodlawn, MD
- Patapsco River at Hollofield, MD
- Scotts Level Branch at Rockdale, MD
- Herring Run at Sinclair Lane at Baltimore, MD
Live streamflow and gage height: USGS gauge 01589100. Percentile context computed against the gauge's period of record. Not for navigation.
Open East Branch Herbert Run at Arbutus, MD on the live chart →
River pins, dam-release overlays and wadability lines live in the app, start a free TidalMap trial.