Whitemarsh Run near Fullerton, MD
River level and flood forecast · Baltimore County
The river is 8.8 ft below flood stage (10 ft).
Flow: 1 cubic feet per second (USGS).
Normal for October 14.
Usual for October 14: 1 to 3 cubic feet per second (the middle half of 31 years).
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 Whitemarsh Run near Fullerton to flood, when it floods, and when it's over.
Flood stages
| Major flood stage | 20 ft |
| Moderate flood stage | 18 ft |
| Flood stage | 10 ft |
| Action stage | 5 ft |
| Record crest (July 11, 2019) | 7.87 ft |
What floods at each level
From the National Weather Service, highest first.
- 18 ftBusinesses and structures are flooded by Whitemarsh Run near Fullerton.
- 15 ftYards begin to flood near the stream.
- 10 ftBackwater flooding begins near US Highway 1.
Highest crests on record
- 7.87 ft — July 11, 2019
- 7.56 ft — June 27, 2015
- 7.48 ft — February 24, 2016
- 7.24 ft — May 27, 2018
- 7.17 ft — June 10, 2021
Recent crests: 7.17 ft (June 10, 2021) · 7.87 ft (July 11, 2019) · 7.24 ft (May 27, 2018) · 7.48 ft (February 24, 2016) · 7.56 ft (June 27, 2015)
Highest flow on record
3,850 cubic feet per second — July 24, 2020. From the USGS's yearly peaks since 1995.
Up and down the river, and nearby
Not an official source. River levels, forecasts, flood stages and impacts are from the National Weather Service (FLRM2); flow from the U.S. Geological Survey. Readings are provisional. In a flood, follow your local officials and the NWS at weather.gov.