Grass River at Chase Mills NY

St. Lawrence County, New York · USGS gauge 04265432 · NWS CHAN6 · New York river levels

Is Grass River at Chase Mills NY flooding right now?

Grass River at Chase Mills NY measured 4.61 ft on 2026-10-27 18:00:00 UTC. No NWS minor flood stage is published for this gauge. Its action level is 7 ft; action level is not flood stage.

Gauge height

4.61 ft

as of 52 min ago

Streamflow

314 cfs

data refreshed 6 min ago

The highest crest on record was 8.48 ft on Sun, Aug 11, 2024.

Flood forecast

NWS forecast, issued 4 hours ago. Forecasts are issued for select river points and update through the day.

Flood stages at this gauge

Category	Stage	Current distance
Action	7 ft	2.4 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
8.48 ft	2024-08-11
8.16 ft	2014-04-09
7.53 ft	2005-09-18
7.44 ft	2011-05-17
7.34 ft	2017-11-01

Last 7 days

Past 7 days · 4.61–4.93 ft

Nearby gauges

Gauge	Distance	County
Raquette River at Raymondville NY	4.9 mi	St. Lawrence County
St. Regis River at Brasher Center NY	14.7 mi	St. Lawrence County
Oswegatchie River near Heuvelton NY	22.5 mi	St. Lawrence County
West Branch St. Regis River near Parishville NY	23.9 mi	St. Lawrence County
Raquette River at South Colton NY	25.1 mi	St. Lawrence 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