Bound Brook at Middlesex NJ

Somerset County, New Jersey · USGS gauge 01403900 · NWS MDSN4 · New Jersey river levels

Nearby: river levels near Rahway · river levels near Manville

Is Bound Brook at Middlesex NJ flooding right now?

Bound Brook at Middlesex NJ measured 1.68 ft on 2026-09-11 01:00:00 UTC. That observation was 7.3 ft below its 9 ft flood stage. This is the latest available reading, not a guarantee of current conditions.

Gauge height

1.68 ft

as of 85 min ago

Streamflow

28 cfs

data refreshed 7 min ago

Minor flooding here begins at 9 ft. The highest crest on record was 14.11 ft on Thu, Sep 2, 2021.

Streamflow outlook

NOAA National Water Model forecast, issued 14 hours ago. The NWM models discharge for every river reach in the country, including the many gauges the National Weather Service does not forecast individually. It is a model, not an official NWS river forecast, and it predicts flow rather than water level.

Flood stages at this gauge

Category	Stage	Current distance
Action	8.5 ft	6.8 ft below
Minor flood	9 ft	7.3 ft below

New to these numbers? What does flood stage mean? · How to read a river gauge · Why is the river rising?

Highest crests on record

Stage	Date
14.11 ft	2021-09-02
14.01 ft	2011-08-28
13.54 ft	1999-09-17
13.14 ft	2010-03-14
12.1 ft	2007-04-16

Nearby gauges

Gauge	Distance	County
Middle Brook at Bound Brook NJ	2.7 mi	Somerset County
Green Brook at Rock Avenue at Plainfield NJ	2.9 mi	Somerset County
Raritan River below Calco Dam at Bound Brook NJ	3.2 mi	Somerset County
West Branch Middle Brook near Somerville NJ	4.4 mi	Somerset County
Raritan River at Manville NJ	4.4 mi	Somerset County

Provisional data: Real-time readings are provisional and subject to revision by the USGS — sensors can be affected by ice, debris, or equipment malfunction. Do not rely on this site for decisions involving personal safety; follow official guidance from the National Weather Service and local authorities.

Sources: USGS monitoring location · NWS gauge & forecast