Gunpowder Falls at Hoffmanville, MD
River level and flood forecast · Baltimore County
The river is 4.6 ft below flood stage (6 ft).
Flow: 26 cubic feet per second (USGS).
The last 7 days and the forecast
NWS forecast issued Sun, Dec 31, 7 PM. Forecasts change as rain falls and as upstream water arrives.
Get flood alerts for this river
An email when the National Weather Service forecasts Gunpowder Falls at Hoffmanville to flood, when it floods, and when it's over.
Flood stages
| Major flood stage | 10 ft |
| Moderate flood stage | 8 ft |
| Flood stage | 6 ft |
| Action stage | 5 ft |
| Record crest (August 28, 2009) | 10.02 ft |
What floods at each level
From the National Weather Service, highest first.
- 10 ftSignificant flooding is occurring along Gunpowder Falls upstream of Prettyboy Reservoir, with roads and structures affected.
- 8 ftGrave Run Road is flooded. Flooding of structures is occurring at River Valley Ranch.
- 6 ftDue to a combination of high water on Gunpowder Falls and backwater on Muddy Creek, water enters buildings at River Valley Ranch.
- 5 ftWater overflows the banks into the floodplain but few impacts are observed.
Highest crests on record
- 10.02 ft — August 28, 2009
- 7.69 ft — July 24, 2018
- 6.93 ft — September 8, 2011
- 6.49 ft — July 26, 2018
- 6.14 ft — August 4, 2018
Recent crests: 6.01 ft (July 10, 2025) · 6.14 ft (August 4, 2018) · 6.49 ft (July 26, 2018) · 7.69 ft (July 24, 2018) · 5.19 ft (October 11, 2013)
Up and down the river, and nearby
Not an official source. River levels, forecasts, flood stages and impacts are from the National Weather Service (GFHM2); flow from the U.S. Geological Survey. Readings are provisional. In a flood, follow your local officials and the NWS at weather.gov.