Arroyo Seco near Pasadena CA

Los Angeles County, California · USGS gauge 11098000 · NWS ASPC1 · Arroyo Seco flood status · California river levels

Is Arroyo Seco near Pasadena CA flooding right now?

Arroyo Seco near Pasadena CA measured 1.06 ft on 2026-10-27 18:15:00 UTC. No NWS minor flood stage is published for this gauge.

Gauge height

1.06 ft

as of 37 min ago

Streamflow

1 cfs

data refreshed 6 min ago

The highest crest on record was 9.42 ft on Wed, Mar 2, 1938.

Streamflow outlook

NOAA National Water Model forecast, issued 13 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.

No National Weather Service flood stage is published for this gauge, so no flood category can be shown — why some gauges have no flood stage.

Highest crests on record

Stage	Date
9.42 ft	1938-03-02

Last 7 days

Past 7 days · 0.93–1.06 ft

Nearby gauges

Gauge	Distance	County
Big Tujunga C below Hansen Dam CA	12.3 mi	Los Angeles County
Rio Hondo above Whittier Narrows Dam CA	12.8 mi	Los Angeles County
San Gabriel River below Santa Fe Dam near Baldwin Pk CA	14.1 mi	Los Angeles County
Rio Hondo below Whittier Narrows Dam CA	15.1 mi	Los Angeles County
San Gabriel River above Whittier Narrows Dam CA	15.2 mi	Los Angeles 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