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Guana River below Guana River Dam (in MHHW) — water level right now

St. Johns County, Florida · NWS gauge GRDF1
Loading the latest reading…
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current stage (ft)
 
1.7
minor flood stage
 
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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 · 1
minor · 1.7
moderate · 2.3
major · 3.5
Flood stageLevel (ft)What it means
Major flood stage3.5extensive inundation and significant evacuations — a serious event
Moderate flood stage2.3some buildings and roads inundated; evacuations possible
Minor flood stage1.7low-lying roads and fields near the river start to flood
Action stage1water 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

Tolomato River above St. Augustine Airport (in MHHW) 2 mi away · loading… Guana River near Ponte Vedra South (in NAVD88) 8 mi away · loading… Tide Station at St Augustine Municipal Marina (in MHHW) 9 mi away · loading… Mickler at 16th Street Culvert in St Augustine Beach (in NAVD88) 12 mi away · loading… SR A1A at 11th Street Canal in St Augustine Beach (in NAVD88) 12 mi away · loading… Durbin Creek at Racetrack Road (in NAVD88) 13 mi away · loading…

Gauge details

NWS gauge IDGRDF1
CountySt. Johns
StateFlorida
NWS forecast officeJacksonville
River forecast centerSoutheast River Forecast Center
Coordinates30.023, -81.328
Time zoneEST5EDT
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 Guana River below Guana River Dam (in MHHW)

Is Guana River below Guana River Dam (in MHHW) 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 1.7 ft. Blue means normal, yellow is action stage, orange minor, red moderate and dark red major flooding.

What is flood stage for Guana River below Guana River Dam (in MHHW)?

major flood stage 3.5 ft, moderate flood stage 2.3 ft, minor flood stage 1.7 ft, action stage 1 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 Jacksonville and local emergency management.