TidalMapLong Quarter Branch at Lutherville, 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 01583800 sits on Long Quarter Branch and reads everything draining 2.0 square miles of the Gunpowder-Patapsco basin. Its datum sits 243 feet above sea level NAVD88. Daily flow has been on record here since 2014, 12 years of it.
Normal flows here
Long Quarter Branch runs a median of 1.0 cfs at this gauge across 12 years of record. February is the fullest month at a median 1.4 cfs, and September the leanest at 0.6 cfs. The highest daily mean on record is 166 cfs in 2014, and the lowest is 0.1 cfs in 2014.
| Month | Median flow | Share of annual median |
|---|---|---|
| Jan | 1.1 cfs | 110% |
| Feb | 1.4 cfs | 140% |
| Mar | 1.4 cfs | 140% |
| Apr | 1.2 cfs | 120% |
| May | 1.2 cfs | 120% |
| Jun | 1.0 cfs | 96% |
| Jul | 0.8 cfs | 81% |
| Aug | 0.8 cfs | 76% |
| Sep | 0.6 cfs | 63% |
| Oct | 0.7 cfs | 66% |
| Nov | 0.7 cfs | 72% |
| Dec | 1.1 cfs | 110% |
Medians from the USGS daily-statistics record, 2014 to 2025. A month at 100% is running at its own long-term median.
Flood stages and record crests
Long Quarter Branch reaches flood stage at this gauge at 8.5 feet. NWS starts watching it at 7 feet. The highest crest on record is 7.3 feet, in May 2018.
| Category | Gage height |
|---|---|
| Action | 7 ft |
| Minor flooding | 8.5 ft |
| Moderate flooding | 11 ft |
| Major flooding | 13 ft |
| When | Crest |
|---|---|
| May 2018 | 7.3 ft |
| June 2015 | 7.1 ft |
| July 2019 | 7 ft |
| February 2016 | 6.6 ft |
| August 2017 | 6.6 ft |
Flood categories and crest history from the NOAA National Water Prediction Service, gauge LUTM2. Stages are gage height, not depth. Not for navigation.
Nearby river gauges
- Minebank Run near Glen Arm, MD
- West Branch Herring Run at Idlewylde, MD
- Beaverdam Run at Cockeysville, MD
- Baisman Run at Broadmoor, MD
- Pond Branch at Oregon Ridge, MD
- Whitemarsh Run near Fullerton, MD
- Moores Run at Radecke Ave at Baltimore, MD
- Herring Run at Sinclair Lane at Baltimore, MD
- Western Run at Western Run, MD
- Long Green Creek at Glen Arm, MD
- Whitemarsh Run at White Marsh, MD
- Dead Run at Franklintown, MD
Live streamflow and gage height: USGS gauge 01583800. Percentile context computed against the gauge's period of record. Not for navigation.
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