TornadoLiveMap

Delaware River at Trenton — water level right now

Mercer County, New Jersey · NWS gauge TREN4
Loading the latest reading…
–
current stage (ft)
 
20
minor flood stage
 
30.6
record crest
set 1904-03-08
–
flood status
official NWS category
Official NOAA forecast → USGS data → Full US flood map →

Flood stages at this gauge

Where the water stands right now against the four official thresholds:

action · 17
minor · 20
moderate · 23
major · 25
Flood stageLevel (ft)What it means
Major flood stage25extensive inundation and significant evacuations — a serious event
Moderate flood stage23some buildings and roads inundated; evacuations possible
Minor flood stage20low-lying roads and fields near the river start to flood
Action stage17water is approaching flood level — time to pay attention

Highest floods on record here

#Crest (ft)Datevs. minor flood stage
130.61904-03-08+10.6 above
228.61955-08-20+8.6 above
328.51903-10-11+8.5 above
425.332005-04-04+5.33 above
525.092006-06-29+5.09 above
624.431936-03-19+4.43 above
723.61902-03-02+3.6 above
823.412004-09-19+3.41 above
922.21996-01-20+2.2 above
1022.162011-09-09+2.16 above
1121.121942-05-24+1.12 above
1221.11913-03-28+1.1 above

Historic crests recorded at this gauge by the National Weather Service — the 12 highest on file.

Where this gauge is

The marker is this gauge; nearby gauges load live and are clickable.

Nearby river gauges

Assunpink Creek at Trenton 2 mi away · loading… Assunpink Creek near Mercerville 3 mi away · loading… Assunpink Creek at Clarksville 6 mi away · loading… Delaware River at Washington Crossing 7 mi away · loading… Stony Brook at Princeton 9 mi away · loading… Crosswicks Creek at Extonville 11 mi away · loading…

Gauge details

NWS gauge IDTREN4
USGS site01463500
CountyMercer
StateNew Jersey
NWS forecast officeMount Holly
River forecast centerMiddle Atlantic River Forecast Center
Coordinates40.222, -74.778
Time zoneEST5EDT
Turn Around, Don't Drown. Six inches of moving water can knock you off your feet and twelve inches can float a car. Never drive around barricades or into water of unknown depth — most flood deaths happen in vehicles.

Questions about Delaware River at Trenton

Is Delaware River at Trenton flooding right now?

The live reading at the top of this page answers that: the gauge is compared against its official NWS flood stages every 15 minutes. Minor flooding at this gauge begins at 20 ft. Blue means normal, yellow is action stage, orange minor, red moderate and dark red major flooding.

What is flood stage for Delaware River at Trenton?

major flood stage 25 ft, moderate flood stage 23 ft, minor flood stage 20 ft, action stage 17 ft. These are official National Weather Service thresholds set specifically for this gauge, not generic values.

What is the record flood at Delaware River at Trenton?

The highest crest on file at this gauge is 30.6 ft, reached on 1904-03-08 — that is 10.6 ft above minor flood stage. The full list of the highest crests is in the table on this page.

Where does this data come from?

From the NOAA National Water Prediction Service, the official U.S. river gauge network — a U.S. government work in the public domain. Live stage is refreshed every 15 minutes; flood thresholds and historic crests are refreshed monthly. For life-safety decisions follow NWS Mount Holly and local emergency management.