Long Green Creek at Glen Arm, MD
Is Long Green Creek at Glen Arm, MD flooding right now?
Long Green Creek at Glen Arm, MD measured 0.91 ft on 2026-09-11 01:15:00 UTC. That observation was 6.1 ft below its 7 ft flood stage. This is the latest available reading, not a guarantee of current conditions.
Gauge height
0.91 ft
Streamflow
2 cfs
Minor flooding here begins at 7 ft, with major flooding at 15 ft. The highest crest on record was 6.7 ft on Sun, Jul 1, 1984.
Streamflow outlook
Flood stages at this gauge
| Category | Stage | Current distance |
|---|---|---|
| Action | 4 ft | 3.1 ft below |
| Minor flood | 7 ft | 6.1 ft below |
| Moderate flood | 10 ft | 9.1 ft below |
| Major flood | 15 ft | 14.1 ft below |
Highest crests on record
| Stage | Date |
|---|---|
| 6.7 ft | 1984-07-01 |
| 6.43 ft | 2016-02-24 |
| 6.39 ft | 2006-11-16 |
| 6.31 ft | 1978-08-27 |
| 6.27 ft | 1989-07-20 |
Last 7 days
Nearby gauges
| Gauge | Distance | County |
|---|---|---|
| Little Gunpowder Falls at Laurel Brook, MD | 4.3 mi | Baltimore County |
| Minebank Run at Loch Raven, MD | 4.4 mi | Baltimore County |
| North Fork Whitemarsh Run near White Marsh, MD | 4.8 mi | Baltimore County |
| Minebank Run near Glen Arm, MD | 5.2 mi | Baltimore County |
| Whitemarsh Run near Fullerton, MD | 5.3 mi | Baltimore County |
Get a flood alert for this gauge
Free email alerts when this gauge approaches flood stage are coming soon. Leave your email and you'll be first in line.
One email when alerts launch, then only flood notifications. No spam, unsubscribe anytime.
Provisional data: Real-time readings are provisional and subject to revision by the USGS — sensors can be affected by ice, debris, or equipment malfunction. Do not rely on this site for decisions involving personal safety; follow official guidance from the National Weather Service and local authorities.