Is the Cucamonga Creek flooding?

California · 2 gauges · California river levels

The Cucamonga Creek is tracked by 2 USGS streamgauges in California. 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 Cucamonga Creek is running normal, rising toward flood stage, or already flooding. 0 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 California river levels.

data refreshed 7 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 Cucamonga C near Upland CA. The highest level ever recorded there was 16.95 ft on 18 September 2025, carrying 5 cfs. Peak records there go back to 1928 (48 annual peaks). It is currently at 16.53 ft, 0.4 ft below that record.

Drains 10 sq mi · gauge elevation 2,356 ft · source: USGS peak-flow record

Gauge	Status	Stage	Flood stage	Updated
Cucamonga C near Upland CA	No flood stage defined	16.53 ft	—	54 min ago
Cucamonga C near Mira Loma CA	No flood stage defined	3.24 ft	—	69 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.