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Delaware River at Trenton, NJ (TREN4)

Data Type




Inundation Levels
NAVD88 Stage

33.5*34.6*
32.9*34.0*
31.6*32.7*
30.2*31.3*
Record Crest: 30.6 ft
29.030.1
27.828.9
26.627.7
25.426.5
24.225.3
Major Flooding Begins

23.524.6
23.024.1
22.323.4
Moderate Flooding Begins

21.522.6
21.122.2
20.421.5
19.720.8
Minor Flooding Begins

18.920.0
17.518.6
16.217.3
Near Flooding Begins

14.916.0
13.714.8
Below Flooding Begins

* = Extended rating
Weather Forecast Office Philadelphia/Mount Holly, NJ Middle Atlantic River Forecast Center
Hydrograph River at a Glance Download Inundation
Mapping
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Click on mapped inundation to see water depth values for that location, or hold shift and drag to zoom to area.

Current Stage:
11.7 ft at 04/18/2024 20:15:00 UTC
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Inundation Legend
Depth in feet
USGS Gauge Location Gauge Location
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Disclaimer

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Latitude/Longitude Disclaimer: The gauge location shown in the above map is the approximate location based on the latitude/longitude coordinates provided to the NWS by the gauge owner.

Gauge Information Collapse

Map Overlays
Flood Categories (in feet)
Major Flood Stage: 25
Moderate Flood Stage: 23
Flood Stage: 20
Action Stage: 17
Low Stage (in feet): 0

Historic Crests
(1) 30.60 ft on 03/08/1904
(2) 28.60 ft on 08/20/1955
(3) 28.50 ft on 10/11/1903
(4) 25.33 ft on 04/04/2005
(5) 25.09 ft on 06/29/2006
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 20.76 ft on 09/03/2021
(2) 19.93 ft on 01/15/2018 (P)
(3) 16.46 ft on 05/01/2014
(4) 20.76 ft on 01/09/2014
(5) 22.16 ft on 09/09/2011
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
Currently none available.

Graphical representation of flood inundation for NWS flood categories are based on steady state hydraulic modeling of water surface elevations for incremented discharges. Map shows approximate inundation areas for given water surface elevations and should not be used for navigation or permitting or other legal purposes, but strictly as a planning reference tool.

Site-specific information:
These maps represent unobstructed flow conditions and may be unrepresentative when ice jams and/or debris are in place.

Extended rating:
Rating Curve Extension - The Rating Curve Extension is calculated by using either a linear, logarithmic, or hydraulic technique to extend the rating curve above the currently established relationship between stage and flow.
Flood Impacts Collapse
If you notice any errors in the below information, please contact our Webmaster
25 The Delaware River meets the Delaware Canal, backfilling the Rivermawr and Flats neighborhoods making all roads east of the canal impassable.
24.5 Carr's Lane in Yardley begins to flood.
23 North and South Bell Avenues in Yardley begin to flood.
22 Route 32 in Yardley is flooded in both directions. Up to two feet of water covers portions of Morgan Avenue, Brown Street, Maple Avenue, and Fuld Avenue.
21.5 Ferry Street in Yardley begins to flood.
20 Houses on Brown Street in Yardley begin to take on water. Houses on Afton Avenue also take on water. Southbound lanes are closed along stretches of Route 29 in Trenton. Route 32 North is closed in Yardley borough. River Road (Route 32), north of Woodside Road and south of Mt. Eyre Road, in Lower Makefield Township, begins to flood.
19.5 Morgan Avenue in Yardley Borough begins to flood. River Road (PA Rt 32) at East Ferry Road in Lower Makefield Township begins to flood.
18.5 Route 32 South at East College Avenue in Yardley borough begins to flood.
18 Route 32 North is closed between Brown Street and Maple Avenue.
17 Pa Route 32 North in Yardley Borough begins to flood between Brown Street and Maple Avenue.
Photos
(1) Ice at the Trenton Gage
Other Data Sources Collapse
Additional Information Collapse
Potential River Levels - Used to
Potential River Levels
Used to Estimate the Chance of Flooding and the Range of Possible River Levels
10 Day (HEFS) 10 Day (NAEFS) 10 Day (GEFS)
HEFS Ensemble NAEFS Ensemble GEFS Ensemble

Note: Use the official hydrograph at the top of this web page for river levels within the next 72 hours.

Click individual graphics to enlarge.

During winter months, cold and ice may result in inaccurate real-time stream stage and streamflow data. Adjustments or deletions of this data can only be done after detailed analysis.
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The National Weather Service prepares its forecasts and other services in collaboration with agencies like the US Geological Survey, US Bureau of Reclamation, US Army Corps of Engineers, Natural Resource Conservation Service, National Park Service, ALERT Users Group, Bureau of Indian Affairs, and many state and local emergency managers across the country. For details, please click here.
NWS Information
National Weather Service
Philadelphia/Mount Holly Weather Forecast Office
732 Woodlane Road
Mount Holly, NJ 08060-9615
(609) 261-6600
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Graphical representation of flood inundation for NWS flood categories are based on steady state hydraulic modeling of water surface elevations for incremented discharges. Map shows approximate inundation areas for given water surface elevations and should not be used for navigation or permitting or other legal purposes, but strictly as a planning reference tool.