Gardner River near Mammoth, YNP

Park County, Montana · USGS gauge 06191000 · NWS GDRM8 · Montana river levels

Is Gardner River near Mammoth, YNP flooding right now?

Gardner River near Mammoth, YNP measured 1.83 ft on 2026-09-11 01:30:00 UTC. No NWS minor flood stage is published for this gauge. Its action level is 5.5 ft; action level is not flood stage.

Gauge height

1.83 ft

as of 47 min ago

Streamflow

104 cfs

data refreshed 15 min ago

The highest crest on record was 5.09 ft on Sat, Jun 5, 2010.

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	5.5 ft	3.7 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
5.09 ft	2010-06-05
5.03 ft	1997-06-02
4.98 ft	1996-05-16
4.83 ft	1993-05-22
4.78 ft	1962-06-16

Nearby gauges

Gauge	Distance	County
Boiling River at Mammoth, YNP	0.5 mi	Park County
Blacktail Deer Creek near Mammoth YNP	5.9 mi	Park County
Yellowstone River at Corwin Springs MT	9.7 mi	Park County
Lamar River near Tower Ranger Station YNP	15.1 mi	Park County
Tantalus Creek at Norris Junction, YNP	17.9 mi	Park 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