TidalMapScotts Level Branch at Rockdale, 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 01589290 sits on Scotts Level Branch and reads everything draining 3.2 square miles of the Gunpowder-Patapsco basin. Its datum sits 452 feet above sea level NAVD88. Daily flow has been on record here since 2006, 20 years of it.
Normal flows here
Scotts Level Branch runs a median of 1.5 cfs at this gauge across 20 years of record. February is the fullest month at a median 2.4 cfs, and September the leanest at 0.6 cfs. The highest daily mean on record is 397 cfs in 2011, and the lowest is 0.1 cfs in 2023.
| Month | Median flow | Share of annual median |
|---|---|---|
| Jan | 2.0 cfs | 133% |
| Feb | 2.4 cfs | 160% |
| Mar | 2.1 cfs | 140% |
| Apr | 2.0 cfs | 133% |
| May | 1.7 cfs | 113% |
| Jun | 1.3 cfs | 87% |
| Jul | 0.9 cfs | 59% |
| Aug | 0.7 cfs | 49% |
| Sep | 0.6 cfs | 38% |
| Oct | 0.8 cfs | 55% |
| Nov | 1.1 cfs | 73% |
| Dec | 1.8 cfs | 120% |
Medians from the USGS daily-statistics record, 2006 to 2026. A month at 100% is running at its own long-term median.
Flood stages and record crests
Scotts Level Branch reaches flood stage at this gauge at 7 feet. NWS starts watching it at 5 feet. The highest crest on record is 7.8 feet, in July 2016.
| Category | Gage height |
|---|---|
| Action | 5 ft |
| Minor flooding | 7 ft |
| Moderate flooding | 9 ft |
| Major flooding | 10 ft |
| When | Crest |
|---|---|
| July 2016 | 7.8 ft |
| September 2011 | 7.6 ft |
| April 2014 | 6.2 ft |
| July 2018 | 5.7 ft |
| November 2006 | 5.5 ft |
Flood categories and crest history from the NOAA National Water Prediction Service, gauge SLRM2. Stages are gage height, not depth. Not for navigation.
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Live streamflow and gage height: USGS gauge 01589290. Percentile context computed against the gauge's period of record. Not for navigation.
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