Rivers in New Jersey

Assunpink Creek at Trenton

Mercer County, New JerseyNWS TACN4USGS 01464000Mount Holly office

Below flood stage
3.08ftStage

Observed Wed, Sep 23, 3:15 AM EDT

Flood stage
8.50 ft
Forecast crest
3.00 ftWed, Sep 23, 8:00 AM EDT
Record crest
15.12 ft2011

Open the live map with the river flood outlook

Flood stages and impacts

CategoryStage
Major flood11.00 ft
Moderate flood9.50 ft
Minor flood8.50 ft
Action7.00 ft
  1. 15.00 ftThe Trenton Transit Center is flooded.
  2. 13.00 ftNJ Transit and Amtrak rail lines are flooded shutting down service. Amtrak service between Philadelphia and Boston are cancelled. The neighborhood in the vicinity of North Clinton and North Olden Avenues flood. Homes and businesses take on water.
  3. 11.00 ftNorth Olden Avenue begins to flood.
  4. 10.00 ftMulberry Street flooding increases. Evacuations possible.
  5. 9.00 ftMulberry Street begins to flood.
  6. 6.50 ftAssunpink Park floods. George Page Park floods. Minor street flooding in Trenton.

Flood outlook

Chance of flooding, September to November

CategoryChance
Minor flooding18%
Moderate flooding9%
Major floodingUnder 5%

The three-month chances are the River Forecast Centers’ long-range flood outlook, issued August 28, 2026.

Crest history

32 crests on NOAA’s list since 1971.

#DateStage
1August 28, 201115.12 ft
2July 21, 197514.61 ft
3September 16, 199914.01 ft
4August 28, 197113.46 ft
5April 16, 200713.28 ft
6September 2, 202112.59 ft
7June 13, 199611.69 ft
8January 28, 199411.67 ft
9May 1, 201411.62 ft
10March 10, 199410.53 ft
11October 19, 199610.47 ft
12January 19, 199610.38 ft
13February 2, 197310.37 ft
14May 27, 201810.16 ft
15November 25, 20189.94 ft
16April 17, 20119.65 ft
17March 14, 20109.36 ft
18December 18, 20239.29 ft
19September 8, 20119.28 ft
20March 30, 20108.99 ft
21February 6, 20048.75 ft
22January 10, 20248.74 ft
23April 2, 20058.62 ft
24July 18, 20218.56 ft
25April 30, 20148.49 ft

Most recent crests

  • January 10, 2024: 8.74 ft
  • December 18, 2023: 9.29 ft
  • September 2, 2021: 12.59 ft
  • July 18, 2021: 8.56 ft
  • November 25, 2018: 9.94 ft
  • May 27, 2018: 10.16 ft
  • May 1, 2014: 11.62 ft
  • April 30, 2014: 8.49 ft
  • September 8, 2011: 9.28 ft
  • August 28, 2011: 15.12 ft

Nearby

Upstream, downstream and the gauges around this one.

What this means

Forecasts by the Middle Atlantic River Forecast Center. Forecasts are issued routinely year-round.

Sources

Stage, flood stages, impacts and crest history from NOAA’s National Water Prediction Service. Streamflow and the daily record from the U.S. Geological Survey.