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Tide Station at St Augustine Municipal Marina (in MHHW) — water level right now

St. Johns County, Florida · NWS gauge SMFF1
Loading the latest reading…
–
current stage (ft)
 
1.6
minor flood stage
 
3
record crest
set 2025-10-11
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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 · 1.2
minor · 1.6
moderate · 2.5
major · 3.7
Flood stageLevel (ft)What it means
Major flood stage3.7extensive inundation and significant evacuations — a serious event
Moderate flood stage2.5some buildings and roads inundated; evacuations possible
Minor flood stage1.6low-lying roads and fields near the river start to flood
Action stage1.2water is approaching flood level — time to pay attention

Highest floods on record here

#Crest (ft)Datevs. minor flood stage
132025-10-11+1.4 above
22.972025-10-10+1.37 above
32.352025-09-09+0.75 above
42.292025-09-13+0.69 above
52.252025-10-09+0.65 above
62.232025-09-08+0.63 above
72.162025-10-09+0.56 above
82.12025-09-09+0.5 above
92.092025-09-10+0.49 above
102.032025-10-03+0.43 above
1122025-10-10+0.4 above
121.942025-10-04+0.34 above

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

Mickler at 16th Street Culvert in St Augustine Beach (in NAVD88) 3 mi away · loading… SR A1A at 11th Street Canal in St Augustine Beach (in NAVD88) 3 mi away · loading… Mickler at A Street Canal in St Augustine Beach (in NAVD88) 4 mi away · loading… Tolomato River above St. Augustine Airport (in MHHW) 7 mi away · loading… Guana River below Guana River Dam (in MHHW) 9 mi away · loading… Atlantic Ocean at Matanzas River Inlet Bridge (in MHHW) 14 mi away · loading…

Gauge details

NWS gauge IDSMFF1
CountySt. Johns
StateFlorida
NWS forecast officeJacksonville
River forecast centerSoutheast River Forecast Center
Coordinates29.891, -81.31
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 Tide Station at St Augustine Municipal Marina (in MHHW)

Is Tide Station at St Augustine Municipal Marina (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 1.6 ft. Blue means normal, yellow is action stage, orange minor, red moderate and dark red major flooding.

What is flood stage for Tide Station at St Augustine Municipal Marina (in MHHW)?

major flood stage 3.7 ft, moderate flood stage 2.5 ft, minor flood stage 1.6 ft, action stage 1.2 ft. These are official National Weather Service thresholds set specifically for this gauge, not generic values.

What is the record flood at Tide Station at St Augustine Municipal Marina (in MHHW)?

The highest crest on file at this gauge is 3 ft, reached on 2025-10-11 — that is 1.4 ft above minor flood stage. 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 Jacksonville and local emergency management.