TidalMapBaisman Run at Broadmoor, 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 01583580 sits on Baisman Run and reads everything draining 1.5 square miles of the Gunpowder-Patapsco basin. Its datum sits 328 feet above sea level NAVD88. Daily flow has been on record here since 1964, 31 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 Beaverdam Run at Cockeysville, MD at 21 square miles, so what passes this gauge is about 7% of the water measured there.
Normal flows here
Baisman Run runs a median of 1.3 cfs at this gauge across 31 years of record. April is the fullest month at a median 1.9 cfs, and September the leanest at 0.7 cfs. The highest daily mean on record is 41 cfs in 1968, and the lowest is 0.0 cfs in 2002.
| Month | Median flow | Share of annual median |
|---|---|---|
| Jan | 1.4 cfs | 108% |
| Feb | 1.4 cfs | 108% |
| Mar | 1.7 cfs | 131% |
| Apr | 1.9 cfs | 146% |
| May | 1.9 cfs | 146% |
| Jun | 1.4 cfs | 108% |
| Jul | 1.0 cfs | 76% |
| Aug | 0.8 cfs | 62% |
| Sep | 0.7 cfs | 53% |
| Oct | 0.8 cfs | 61% |
| Nov | 0.9 cfs | 69% |
| Dec | 1.2 cfs | 92% |
Medians from the USGS daily-statistics record, 1964 to 2026. A month at 100% is running at its own long-term median.
Flood stages and record crests
Baisman Run reaches flood stage at this gauge at 4 feet. NWS starts watching it at 3 feet. The highest crest on record is 6.1 feet, in June 1972.
| Category | Gage height |
|---|---|
| Action | 3 ft |
| Minor flooding | 4 ft |
| Moderate flooding | 6 ft |
| Major flooding | 9 ft |
| When | Crest |
|---|---|
| June 1972 | 6.1 ft |
| July 2018 | 5.6 ft |
| September 1968 | 5.4 ft |
| August 2012 | 5.3 ft |
| November 2006 | 4.8 ft |
Flood categories and crest history from the NOAA National Water Prediction Service, gauge BRMM2. Stages are gage height, not depth. Not for navigation.
Nearby river gauges
- Pond Branch at Oregon Ridge, MD
- Western Run at Western Run, MD
- Beaverdam Run at Cockeysville, MD
- Piney Run at Dover, MD
- Long Quarter Branch at Lutherville, MD
- Red Run near Owings Mills, MD
- Minebank Run near Glen Arm, MD
- West Branch Herring Run at Idlewylde, MD
- Scotts Level Branch at Rockdale, MD
- Tributary to Dead Run Tributary at Woodlawn, MD
- Dead Run Tributary at Woodlawn, MD
- Dead Run at Franklintown, MD
Live streamflow and gage height: USGS gauge 01583580. Percentile context computed against the gauge's period of record. Not for navigation.
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