Assunpink Creek near Mercerville, NJ
River level and flood forecast · Mercer County
The river is 5.5 ft below flood stage (9.5 ft).
The last 7 days and the forecast
NWS forecast issued Mon, Jan 1, 12 AM. Forecasts change as rain falls and as upstream water arrives.
Get flood alerts for this river
An email when the National Weather Service forecasts Assunpink Creek near Mercerville to flood, when it floods, and when it's over.
Flood stages
| Major flood stage | 13 ft |
| Moderate flood stage | 11 ft |
| Flood stage | 9.5 ft |
| Action stage | 8.5 ft |
| Record crest (September 2, 2021) | 15.82 ft |
What floods at each level
From the National Weather Service, highest first.
- 14 ftFlooding expands across the above mentioned areas. Roads are barricaded and closed.
- 13 ftSweetbriar Avenue from Whitehead Road to Trinity Avenue is flooded and is subject to closures. Residential basements are flooded on Sweetbriar Avenue. The Whitehead Bridge connecting Hamilton and Lawrence is closed.
- 12 ftAssunpink Boulevard from 1st to 5th Avenue is flooded and is subject to closures. Rutgers Avenue from Sweetbriar Avenue to Trinity Avenue is flooded and is subject to closures.
- 11 ftBrown Avenue from Rutgers Avenue to Vetterlein Avenue is flooded and is subject to closures. Whitehead Road from 7th Avenue to Township Line is flooded and is subject to closures.
- 10 ftAssunpink Boulevard floods. Carnegie Road floods. Rutgers Avenue from Amhurst Avenue to the dead end floods and is subject to closures.
- 8.5 ftThe Delaware and Raritan Canal State Park trail floods.
Highest crests on record
- 15.82 ft — September 2, 2021
- 14.29 ft — May 1, 2014
- 12.86 ft — May 27, 2018
- 12.31 ft — November 25, 2018
- 11.72 ft — December 18, 2023
Recent crests: 11.04 ft (January 10, 2024) · 11.72 ft (December 18, 2023) · 15.82 ft (September 2, 2021) · 9.68 ft (July 18, 2021) · 12.31 ft (November 25, 2018)
Up and down the river, and nearby
Not an official source. River levels, forecasts, flood stages and impacts are from the National Weather Service (MERN4); flow from the U.S. Geological Survey. Readings are provisional. In a flood, follow your local officials and the NWS at weather.gov.