TornadoLiveMap

Hopper Creek at Highway 29 — water level right now

Napa County, California · NWS gauge HCRC1
Loading the latest reading…
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current stage (ft)
 
8.22
record crest
set 1998-02-07
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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 · 5
moderate · 6
Flood stageLevel (ft)What it means
Moderate flood stage6some buildings and roads inundated; evacuations possible
Action stage5water is approaching flood level — time to pay attention

Highest floods on record here

#Crest (ft)Datevs. minor flood stage
18.221998-02-07—

Historic crests recorded at this gauge by the National Weather Service — the 12 highest on file.

Where this gauge is

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

Nearby river gauges

Dry Creek (Napa) at Highway 29 3 mi away · loading… Napa River near Napa 4 mi away · loading… Redwood Creek (Napa County) at Forest Drive 6 mi away · loading… Milliken Creek at Atlas Peak Road 7 mi away · loading… Salvador Channel at Big Ranch Road 7 mi away · loading… Napa Creek at Highway 29 8 mi away · loading…

Gauge details

NWS gauge IDHCRC1
CountyNapa
StateCalifornia
NWS forecast officeMonterey
River forecast centerCalifornia Nevada River Forecast Center
Coordinates38.405, -122.368
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 Hopper Creek at Highway 29

Is Hopper Creek at Highway 29 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. Blue means normal, yellow is action stage, orange minor, red moderate and dark red major flooding.

What is flood stage for Hopper Creek at Highway 29?

moderate flood stage 6 ft, action stage 5 ft. These are official National Weather Service thresholds set specifically for this gauge, not generic values.

What is the record flood at Hopper Creek at Highway 29?

The highest crest on file at this gauge is 8.22 ft, reached on 1998-02-07. The full list of the highest crests is in the table on this page.

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.