TornadoLiveMap

West Branch Middle Brook near Martinsville — water level right now

Somerset County, New Jersey · NWS gauge MRTN4
Loading the latest reading…
–
current stage (ft)
 
6
minor flood stage
 
11.47
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 · 5
minor · 6
Flood stageLevel (ft)What it means
Minor flood stage6low-lying roads and fields near the river start to flood
Action stage5water is approaching flood level — time to pay attention

Highest floods on record here

#Crest (ft)Datevs. minor flood stage
111.472021-09-02+5.47 above
29.31999-09-16+3.3 above
37.862000-08-12+1.86 above
47.322005-10-08+1.32 above
56.91996-10-19+0.9 above
66.21990-05-16+0.2 above
75.332014-04-300.67 below
84.82002-05-131.2 below

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 4 mi away · loading… North Branch Raritan River at North Branch Village 4 mi away · loading… Raritan River at Manville 4 mi away · loading… Bound Brook at Middlesex 5 mi away · loading… Lamington (Black) River at Burnt Mills 5 mi away · loading… Middle Brook at Burnt Mills 5 mi away · loading…

Gauge details

NWS gauge IDMRTN4
USGS site01403150
CountySomerset
StateNew Jersey
NWS forecast officeMount Holly
River forecast centerMiddle Atlantic River Forecast Center
Coordinates40.612, -74.591
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 West Branch Middle Brook near Martinsville

Is West Branch Middle Brook near Martinsville 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 6 ft. Blue means normal, yellow is action stage, orange minor, red moderate and dark red major flooding.

What is flood stage for West Branch Middle Brook near Martinsville?

minor flood stage 6 ft, action stage 5 ft. These are official National Weather Service thresholds set specifically for this gauge, not generic values.

What is the record flood at West Branch Middle Brook near Martinsville?

The highest crest on file at this gauge is 11.47 ft, reached on 2021-09-02 — that is 5.47 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.