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Raritan River at Manville — water level right now

Somerset County, New Jersey · NWS gauge MNVN4
Loading the latest reading…
–
current stage (ft)
 
14
minor flood stage
 
27.66
record crest
set 2021-09-02
–
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 · 12
minor · 14
moderate · 17
major · 20
Flood stageLevel (ft)What it means
Major flood stage20extensive inundation and significant evacuations — a serious event
Moderate flood stage17some buildings and roads inundated; evacuations possible
Minor flood stage14low-lying roads and fields near the river start to flood
Action stage12water is approaching flood level — time to pay attention

Highest floods on record here

#Crest (ft)Datevs. minor flood stage
127.662021-09-02+13.66 above
227.11999-09-17+13.1 above
326.242011-08-28+12.24 above
423.81971-08-28+9.8 above
522.411996-10-20+8.41 above
622.32007-04-16+8.3 above
721.81955-08-19+7.8 above
821.572010-03-14+7.57 above
920.421938-09-22+6.42 above
1020.042024-01-10+6.04 above
1119.992014-05-01+5.99 above
1219.951984-07-07+5.95 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

Middle Brook at Bound Brook 2 mi away · loading… Millstone River at Weston 2 mi away · loading… Raritan River at Bound Brook 2 mi away · loading… Bound Brook at Middlesex 4 mi away · loading… Millstone River at Millstone 4 mi away · loading… West Branch Middle Brook near Martinsville 4 mi away · loading…

Gauge details

NWS gauge IDMNVN4
USGS site01400500
CountySomerset
StateNew Jersey
NWS forecast officeMount Holly
River forecast centerMiddle Atlantic River Forecast Center
Coordinates40.556, -74.583
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 Raritan River at Manville

Is Raritan River at Manville 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 14 ft. Blue means normal, yellow is action stage, orange minor, red moderate and dark red major flooding.

What is flood stage for Raritan River at Manville?

major flood stage 20 ft, moderate flood stage 17 ft, minor flood stage 14 ft, action stage 12 ft. These are official National Weather Service thresholds set specifically for this gauge, not generic values.

What is the record flood at Raritan River at Manville?

The highest crest on file at this gauge is 27.66 ft, reached on 2021-09-02 — that is 13.66 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.