Is the Boulder River flooding?

Montana · 2 gauges · Montana river levels

The Boulder River is tracked by 2 USGS streamgauges in Montana. This page compares each gauge’s live water level against its official National Weather Service flood stage, refreshed every 15 minutes, so you can tell whether the Boulder River is running normal, rising toward flood stage, or already flooding. 1 of 2 gauges have both a usable water-level reading and a published minor flood stage. Gauges without a published flood stage show water level and flow only. For nearby rivers, see all Montana river levels.

data refreshed 14 min ago

Readings may be delayed; check each observation time below. This gauge summary does not rule out flooding on unmonitored stretches or nearby streets.

River facts

The longest-running gauge on this river is Boulder River near Boulder, MT. The highest level ever recorded there was 12.30 ft on 22 May 1981, carrying 7,000 cfs. Peak records there go back to 1929 (84 annual peaks). It is currently at 4.93 ft, 7.4 ft below that record.

Drains 381 sq mi · gauge elevation 4,816 ft · source: USGS peak-flow record

Gauge	Status	Stage	Flood stage	Updated
Boulder River at Big Timber MT	No flooding	0.98 ft	8 ft	77 min ago
Boulder River near Boulder, MT	No flood stage defined	4.93 ft	—	62 min ago

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.