TornadoLiveMap

Willow Brook at Old Redwood Highway Bridge — water level right now

Sonoma County, California · NWS gauge PTMC1
Loading the latest reading…
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current stage (ft)
 
40.7
minor flood stage
 
–
flood status
official NWS category
Official NOAA forecast → Full US flood map →

Flood stages at this gauge

Where the water stands right now against the four official thresholds:

action · 40.7
minor · 40.7
moderate · 43
major · 44.3
Flood stageLevel (ft)What it means
Major flood stage44.3extensive inundation and significant evacuations — a serious event
Moderate flood stage43some buildings and roads inundated; evacuations possible
Minor flood stage40.7low-lying roads and fields near the river start to flood
Action stage40.7water is approaching flood level — time to pay attention

Highest floods on record here

The National Weather Service has no historic crest list on file for this gauge.

Where this gauge is

The marker is this gauge; nearby gauges load live and are clickable.

Nearby river gauges

Corona Creek at Sonoma Mountain Pkwy. 1 mi away · loading… Petaluma River at Corona Road 1 mi away · loading… Petaluma River at Twin Bridges 1 mi away · loading… Wiggins Creek at Rainsville Road 1 mi away · loading… Willow Brook at Penngrove Park 1 mi away · loading… Willow Brook at Stony Point Road 1 mi away · loading…

Gauge details

NWS gauge IDPTMC1
CountySonoma
StateCalifornia
NWS forecast officeMonterey
River forecast centerCalifornia Nevada River Forecast Center
Coordinates38.28, -122.669
Time zonePST8PDT
Turn Around, Don't Drown. Six inches of moving water can knock you off your feet and twelve inches can float a car. Never drive around barricades or into water of unknown depth — most flood deaths happen in vehicles.

Questions about Willow Brook at Old Redwood Highway Bridge

Is Willow Brook at Old Redwood Highway Bridge flooding right now?

The live reading at the top of this page answers that: the gauge is compared against its official NWS flood stages every 15 minutes. Minor flooding at this gauge begins at 40.7 ft. Blue means normal, yellow is action stage, orange minor, red moderate and dark red major flooding.

What is flood stage for Willow Brook at Old Redwood Highway Bridge?

major flood stage 44.3 ft, moderate flood stage 43 ft, minor flood stage 40.7 ft, action stage 40.7 ft. These are official National Weather Service thresholds set specifically for this gauge, not generic values.

Where does this data come from?

From the NOAA National Water Prediction Service, the official U.S. river gauge network — a U.S. government work in the public domain. Live stage is refreshed every 15 minutes; flood thresholds and historic crests are refreshed monthly. For life-safety decisions follow NWS Monterey and local emergency management.