Mahwah River near Suffern NY

Rockland County, New York · USGS gauge 01387450 · NWS SUFN6 · New York river levels

Is Mahwah River near Suffern NY flooding right now?

Mahwah River near Suffern NY measured 1.70 ft on 2026-09-11 01:30:00 UTC. That observation was 3.3 ft below its 5 ft flood stage. This is the latest available reading, not a guarantee of current conditions.

Gauge height

1.70 ft

as of 36 min ago

Streamflow

8 cfs

data refreshed 5 min ago

Minor flooding here begins at 5 ft, with major flooding at 10.5 ft. The highest crest on record was 9.7 ft on Thu, Sep 16, 1999.

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	4.5 ft	2.8 ft below
Minor flood	5 ft	3.3 ft below
Moderate flood	7 ft	5.3 ft below
Major flood	10.5 ft	8.8 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
9.7 ft	1999-09-16

Last 7 days

Past 7 days · 1.70–2.03 ft

Nearby gauges

Gauge	Distance	County
Ramapo River at Suffern NY	2.8 mi	Rockland County
Ramapo River at Ramapo NY	2.8 mi	Rockland County
Ramapo River near Mahwah NJ	3.8 mi	Bergen County
Saddle River at Upper Saddle River NJ	5.8 mi	Bergen County
Ringwood Creek near Wanaque NJ	7.8 mi	Passaic 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