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St. Johns River at Mayport (in MHHW)

Highest listed crest 3.41 ftFlood stage 1.8 ft48 crests since 1944

The St. Johns River at Mayport (in MHHW) crested at major flood stage 1 time among the 48 crests the National Weather Service lists from 1944 to 2026. The highest, 3.41 ft on November 10, 2022, was major flooding, 1.61 feet above flood stage. 13 other gauges on the St. Johns River crested above flood stage within a week of it.

The gauge

Highest listed crest
3.41 ft
November 10, 2022
Flood stage
1.8 ft
Major flooding from 3.3 ft
Crests at major
1
107th of 237 gauges in Florida
Most recent flood crest
October 7, 2026
1.85 ft, minor flooding
Location
Duval County
Near Atlantic Beach (4.1 mi), Jacksonville Beach (8.7 mi), Jacksonville (14.3 mi)
Identifiers
NWS MYPF1
No USGS station

Flood stages

The thresholds the National Weather Service uses for this gauge today, and how many listed crests reached each.

Flood categories, St. Johns River at Mayport (in MHHW)
Action stage1.32Nov 15, 2023The level at which the NWS or its partners begin to take action
Flood stage (minor)1.836Oct 7, 2026Minimal or no property damage, but possibly some public threat
Moderate flood stage2.39Oct 11, 2025Some inundation of structures and roads near the stream
Major flood stage3.31Nov 10, 2022Extensive inundation of structures and roads

Every listed crest

48 crests from 1944 to 2026. Filled: at or above flood stage. Hover a crest for its date and stage.

Listed crests at the St. Johns River at Mayport (in MHHW), 1944 to 2026 1.522.533.5ft Flood stage 1.8 ftMajor 3.3 ft Oct 19, 1944: 2.88 ft, moderate floodingSep 24, 1953: 1.83 ft, minor floodingSep 9, 1964: 2.43 ft, moderate floodingNov 13, 1981: 1.88 ft, minor floodingNov 23, 1984: 2.01 ft, minor floodingSep 16, 2001: 2.16 ft, minor floodingNov 15, 2001: 1.80 ft, minor floodingSep 26, 2004: 2.45 ft, moderate floodingOct 5, 2005: 1.86 ft, minor floodingAug 22, 2008: 2.13 ft, minor floodingSep 25, 2008: 1.80 ft, minor floodingNov 3, 2010: 1.90 ft, minor floodingNov 17, 2012: 1.84 ft, minor floodingSep 24, 2015: 1.83 ft, minor floodingSep 29, 2015: 1.97 ft, minor floodingOct 27, 2015: 2.00 ft, minor floodingOct 7, 2016: 3.21 ft, moderate floodingNov 13, 2016: 1.95 ft, minor floodingSep 11, 2017: 2.79 ft, moderate floodingOct 5, 2017: 1.87 ft, minor floodingOct 18, 2017: 1.85 ft, minor floodingNov 23, 2018: 1.98 ft, minor floodingAug 2, 2019: 1.91 ft, minor floodingAug 30, 2019: 1.89 ft, minor floodingSep 4, 2019: 2.06 ft, minor floodingOct 1, 2019: 1.72 ft, action stageNov 17, 2019: 1.94 ft, minor floodingSep 15, 2020: 1.89 ft, minor floodingSep 21, 2020: 2.42 ft, moderate floodingOct 19, 2020: 1.97 ft, minor floodingNov 15, 2020: 1.83 ft, minor floodingNov 7, 2021: 2.50 ft, moderate floodingSep 29, 2022: 2.48 ft, moderate floodingNov 10, 2022: 3.41 ft, major floodingApr 10, 2023: 1.95 ft, minor floodingJun 4, 2023: 2.11 ft, minor floodingSep 30, 2023: 2.08 ft, minor floodingNov 15, 2023: 1.77 ft, action stageDec 17, 2023: 1.85 ft, minor floodingSep 15, 2024: 1.84 ft, minor floodingSep 21, 2024: 1.84 ft, minor floodingOct 10, 2024: 1.87 ft, minor floodingNov 16, 2024: 2.18 ft, minor floodingSep 9, 2025: 1.95 ft, minor floodingSep 13, 2025: 1.80 ft, minor floodingOct 4, 2025: 1.86 ft, minor floodingOct 11, 2025: 2.38 ft, moderate floodingOct 7, 2026: 1.85 ft, minor flooding Highest, 3.41 ft, Nov 10, 2022 1960198020002020

Crests at or above flood stage, by decade

Crests at or above flood stage per decade, St. Johns River at Mayport (in MHHW) 1940s: 1 1950s: 1 1960s: 1 1970s: 0 1980s: 2 1990s: 0 2000s: 6 2010s: 15 2020s: 20 20 1940s1950s1960s1970s1980s1990s2000s2010s2020s
  1. These are the crests the local National Weather Service office lists for the gauge: the highest on record and recent crests. Lesser floods between them may be missing, so counts by decade are a floor.
  2. Categories use today's flood stages. Levees, dams and channel changes since a crest can make old and new stages not directly comparable.
  3. 1 crest measured on an earlier gauge datum is left out: 6.50 ft on Oct 2, 1898.

Highest crests

Highest listed crests, St. Johns River at Mayport (in MHHW)
1Nov 10, 20223.41+1.61Major—
2Oct 7, 20163.21+1.41Moderate—
3Oct 19, 19442.88+1.08Moderate—
4Sep 11, 20172.79+0.99Moderate—
5Nov 7, 20212.50+0.70Moderate—
6Sep 29, 20222.48+0.68Moderate—
7Sep 26, 20042.45+0.65Moderate—
8Sep 9, 19642.43+0.63Moderate—
9Sep 21, 20202.42+0.62Moderate—
10Oct 11, 20252.38+0.58Moderate—
11Nov 16, 20242.18+0.38Minor—
12Sep 16, 20012.16+0.36Minor—
13Aug 22, 20082.13+0.33Minor—
14Jun 4, 20232.11+0.31Minor—
15Sep 30, 20232.08+0.28Minor—
16Sep 4, 20192.06+0.26Minor—
17Nov 23, 19842.01+0.21Minor—
18Oct 27, 20152.00+0.20Minor—
19Nov 23, 20181.98+0.18Minor—
20Sep 29, 20151.97+0.17Minor—
21Oct 19, 20201.97+0.17Minor—
22Nov 13, 20161.95+0.15Minor—
23Apr 10, 20231.95+0.15Minor—
24Sep 9, 20251.95+0.15Minor—
25Nov 17, 20191.94+0.14Minor—
26Aug 2, 20191.91+0.11Minor—
27Nov 3, 20101.90+0.10Minor—
28Aug 30, 20191.89+0.09Minor—
29Sep 15, 20201.89+0.09Minor—
30Nov 13, 19811.88+0.08Minor—
31Oct 5, 20171.87+0.07Minor—
32Oct 10, 20241.87+0.07Minor—
33Oct 5, 20051.86+0.06Minor—
34Oct 4, 20251.86+0.06Minor—
35Oct 18, 20171.85+0.05Minor—
36Dec 17, 20231.85+0.05Minor—
37Oct 7, 20261.85+0.05Minor—
38Nov 17, 20121.84+0.04Minor—
39Sep 15, 20241.84+0.04Minor—
40Sep 21, 20241.84+0.04Minor—
41Sep 24, 19531.83+0.03Minor—
42Sep 24, 20151.83+0.03Minor—
43Nov 15, 20201.83+0.03Minor—
44Nov 15, 20011.800.00Minor—
45Sep 25, 20081.800.00Minor—
46Sep 13, 20251.800.00Minor—
47Nov 15, 20231.77−0.03Action—
48Oct 1, 20191.72−0.08Action—

The worst floods along the St. Johns River

For this gauge's highest crests, the other gauges on the St. Johns River that crested above flood stage within a week.

November 10, 2022: 3.41 ft here, major flooding

October 7, 2016: 3.21 ft here, moderate flooding

October 19, 1944: 2.88 ft here, moderate flooding

Gauges on the St. Johns River

Flood gauges sharing the river's name, linked within 80 miles of one another.

Flood gauges on the St. Johns River
Lake HarneyFL8.012.67 ft, Oct 3, 20227
AstorFL2.34.81 ft, Oct 12, 20247
Buckman Bridge (I-295) (in MHHW)FL1.55.20 ft, Sep 11, 20177
Buckman Bridge (I-295) (in MHHW)FL1.55.20 ft, Sep 11, 20175
Buffalo Bluff (in MHHW)FL1.53.36 ft, Sep 29, 20223
Dames Point Bridge (I-295) (in MHHW)FL1.63.67 ft, Sep 11, 20172
Dames Point Bridge (I-295) (in MHHW)FL1.63.67 ft, Sep 11, 20172
Jacksonville (in MHHW)FL1.56.00 ft, Oct 12, 18467
Main Street Bridge (in MHHW)FL1.56.00 ft, Oct 12, 18467
Mayport (in MHHW) this gaugeFL1.83.41 ft, Nov 10, 20221
Racy Point (in MHHW)FL1.54.41 ft, Oct 7, 20162
Racy Point (in MHHW)FL1.54.41 ft, Oct 7, 20164
Shands BridgeFL2.03.66 ft, Oct 7, 20161
Shands Bridge (in MHHW)FL1.53.66 ft, Oct 7, 20164
CocoaFL16.017.43 ft, Oct 6, 20172
DelandFL4.06.33 ft, Oct 11, 20225
SanfordFL5.58.96 ft, Oct 9, 20221

Other gauges in Duval County

Flood gauges in Duval County
Atlantic Tide Station at Jacksonville Beach Pier (in MHHW)2.02.25 ft, Sep 24, 20260
Cedar Heights (in MHHW)1.72.29 ft, Oct 7, 20260
Biscayne Boulevard (in MHHW)1.76.89 ft, Sep 11, 20173
San Juan Ave Jacksonville (in MHHW)1.55.66 ft, Sep 11, 20174
Sheffield Road (in MHHW)1.53.47 ft, Sep 11, 20172
Dunn Creek Road (in MHHW)1.54.77 ft, Sep 11, 20172
Fort George State Park (in MHHW)2.02.86 ft, Oct 10, 20250
Fulton Mariners Point (in MHHW)1.62.64 ft, Oct 10, 20250
Old Saint Augustine Road (in MHHW)1.25.35 ft, Sep 11, 20173
St. Johns River Entrance (in MHHW)1.52.35 ft, Oct 11, 20250
Tisonia (in MHHW)1.34.52 ft, Sep 11, 20172
Argyle Forest Boulevard (in NAVD88)10.012.99 ft, Sep 11, 20172
Beach Boulevard (US 90) (in MHHW)1.74.76 ft, Sep 11, 20171
Jacksonville (in NAVD88)6.010.04 ft, Sep 11, 20171
Mill Cove (in MHHW)1.62.45 ft, Oct 10, 20250
Buckman Bridge (I-295) (in MHHW)1.55.20 ft, Sep 11, 20175
Dames Point Bridge (I-295) (in MHHW)1.63.67 ft, Sep 11, 20172
Dames Point Bridge (I-295) (in MHHW)1.63.67 ft, Sep 11, 20172
Jacksonville (in MHHW)1.56.00 ft, Oct 12, 18467
Main Street Bridge (in MHHW)1.56.00 ft, Oct 12, 18467
SR 115 near Callahan (in NAVD88)7.07.70 ft, Oct 11, 20260
Tiger Point (in MHHW)2.02.32 ft, Oct 10, 20250
Lem Turner Road (in MHHW)1.84.50 ft, Sep 11, 20172
Sherwood Forest (in MHHW)1.82.59 ft, Oct 11, 20250

Duval County: every hazard · River floods across the country · Florida

NOAA National Water Prediction Service, gauge MYPF1, retrieved October 30, 2026. Stages in feet on the gauge's own datum, not elevation. Crests are as the National Weather Service lists them; preliminary values may be revised.