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St. Johns River at Main Street Bridge (in MHHW)

Highest listed crest 6.00 ftFlood stage 1.5 ft133 crests since 1846

The St. Johns River at Main Street Bridge (in MHHW) crested at major flood stage 7 times among the 133 crests the National Weather Service lists from 1846 to 2026. The highest, 6.00 ft on October 12, 1846, was major flooding, 4.50 feet above flood stage. 1 other gauge on the St. Johns River crested above flood stage within a week of it, 1 at its own highest listed crest.

The gauge

Highest listed crest
6.00 ft
October 12, 1846
Flood stage
1.5 ft
Major flooding from 3.0 ft
Crests at major
7
26th of 237 gauges in Florida
Most recent flood crest
October 10, 2026
2.10 ft, moderate flooding
Location
Duval County
Near Jacksonville (1.2 mi)
Identifiers
NWS MSBF1
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 Main Street Bridge (in MHHW)
Action stage1.037Oct 16, 2019The level at which the NWS or its partners begin to take action
Flood stage (minor)1.569Oct 6, 2026Minimal or no property damage, but possibly some public threat
Moderate flood stage2.020Oct 10, 2026Some inundation of structures and roads near the stream
Major flood stage3.07Nov 10, 2022Extensive inundation of structures and roads

Every listed crest

133 crests from 1846 to 2026. Filled: at or above flood stage. Hover a crest for its date and stage.

Listed crests at the St. Johns River at Main Street Bridge (in MHHW), 1846 to 2026 123456ft Flood stage 1.5 ftMajor 3.0 ft Oct 12, 1846: 6.00 ft, major floodingOct 19, 1944: 3.38 ft, major floodingSep 9, 1964: 3.49 ft, major floodingSep 28, 1984: 1.73 ft, minor floodingOct 30, 1985: 1.53 ft, minor floodingSep 29, 1989: 1.30 ft, action stageOct 2, 1990: 1.59 ft, minor floodingOct 9, 1990: 1.34 ft, action stageOct 30, 1990: 1.35 ft, action stageSep 26, 1991: 2.01 ft, moderate floodingOct 2, 1991: 1.56 ft, minor floodingOct 9, 1991: 1.31 ft, action stageOct 30, 1991: 1.35 ft, action stageSep 26, 1992: 2.01 ft, moderate floodingOct 3, 1992: 1.87 ft, minor floodingOct 8, 1992: 1.84 ft, minor floodingAug 2, 1995: 1.33 ft, action stageAug 25, 1995: 1.93 ft, minor floodingAug 31, 1995: 1.55 ft, minor floodingSep 6, 1995: 1.77 ft, minor floodingSep 12, 1995: 1.46 ft, action stageOct 1, 1995: 1.49 ft, action stageOct 11, 1995: 1.52 ft, minor floodingOct 20, 1995: 1.42 ft, action stageOct 7, 1996: 2.35 ft, moderate floodingOct 12, 1996: 1.31 ft, action stageDec 16, 1997: 1.40 ft, action stageFeb 3, 1998: 1.42 ft, action stageSep 16, 1999: 1.40 ft, action stageOct 17, 1999: 1.43 ft, action stageSep 18, 2000: 1.50 ft, minor floodingSep 15, 2001: 2.29 ft, moderate floodingSep 19, 2001: 1.86 ft, minor floodingSep 30, 2001: 1.32 ft, action stageOct 15, 2002: 1.47 ft, action stageSep 6, 2004: 2.45 ft, moderate floodingSep 22, 2004: 1.47 ft, action stageSep 26, 2004: 3.42 ft, major floodingOct 23, 2004: 1.38 ft, action stageOct 27, 2004: 1.40 ft, action stageSep 10, 2005: 1.46 ft, action stageOct 5, 2005: 1.76 ft, minor floodingOct 16, 2005: 1.50 ft, minor floodingSep 20, 2007: 1.37 ft, action stageOct 3, 2007: 1.68 ft, minor floodingOct 30, 2007: 1.33 ft, action stageAug 22, 2008: 3.41 ft, major floodingAug 29, 2008: 1.32 ft, action stageSep 2, 2008: 1.55 ft, minor floodingSep 6, 2008: 1.59 ft, minor floodingSep 21, 2008: 2.08 ft, moderate floodingSep 25, 2008: 2.48 ft, moderate floodingSep 29, 2008: 1.58 ft, minor floodingOct 14, 2008: 1.31 ft, action stageOct 24, 2008: 1.54 ft, minor floodingMay 20, 2009: 2.11 ft, moderate floodingSep 14, 2009: 1.36 ft, action stageSep 20, 2009: 1.44 ft, action stageOct 10, 2011: 1.97 ft, minor floodingMay 28, 2012: 2.53 ft, moderate floodingJun 27, 2012: 1.86 ft, minor floodingOct 28, 2012: 1.50 ft, minor floodingMay 4, 2013: 2.17 ft, moderate floodingOct 16, 2013: 1.59 ft, minor floodingSep 29, 2014: 1.36 ft, action stageSep 24, 2015: 1.76 ft, minor floodingSep 29, 2015: 1.83 ft, minor floodingOct 3, 2015: 1.70 ft, minor floodingOct 7, 2015: 1.93 ft, minor floodingOct 12, 2015: 1.37 ft, action stageOct 28, 2015: 1.45 ft, action stageNov 9, 2015: 1.58 ft, minor floodingOct 8, 2016: 2.10 ft, moderate floodingOct 12, 2016: 1.84 ft, minor floodingOct 16, 2016: 1.55 ft, minor floodingNov 13, 2016: 1.38 ft, action stageSep 11, 2017: 4.89 ft, major floodingSep 18, 2017: 1.80 ft, minor floodingSep 25, 2017: 1.70 ft, minor floodingOct 1, 2017: 2.39 ft, moderate floodingOct 5, 2017: 2.17 ft, moderate floodingOct 9, 2017: 1.49 ft, action stageOct 14, 2017: 1.50 ft, minor floodingOct 19, 2017: 1.95 ft, minor floodingNov 12, 2017: 1.43 ft, action stageOct 11, 2018: 1.33 ft, action stageNov 24, 2018: 1.47 ft, action stageSep 5, 2019: 1.66 ft, minor floodingSep 20, 2019: 1.33 ft, action stageOct 7, 2019: 1.32 ft, action stageOct 11, 2019: 1.56 ft, minor floodingOct 16, 2019: 1.34 ft, action stageNov 10, 2019: 1.68 ft, minor floodingNov 14, 2019: 1.60 ft, minor floodingNov 18, 2019: 1.94 ft, minor floodingSep 17, 2020: 1.73 ft, minor floodingSep 22, 2020: 2.14 ft, moderate floodingOct 6, 2020: 1.55 ft, minor floodingOct 19, 2020: 1.58 ft, minor floodingNov 12, 2020: 1.73 ft, minor floodingNov 7, 2021: 1.79 ft, minor floodingSep 30, 2022: 2.75 ft, moderate floodingOct 5, 2022: 1.86 ft, minor floodingOct 12, 2022: 1.75 ft, minor floodingOct 29, 2022: 1.61 ft, minor floodingNov 5, 2022: 1.51 ft, minor floodingNov 10, 2022: 3.28 ft, major floodingAug 30, 2023: 1.57 ft, minor floodingSep 28, 2023: 1.55 ft, minor floodingOct 2, 2023: 1.65 ft, minor floodingOct 13, 2023: 1.93 ft, minor floodingOct 17, 2023: 1.54 ft, minor floodingNov 15, 2023: 1.53 ft, minor floodingDec 17, 2023: 1.63 ft, minor floodingSep 12, 2024: 1.79 ft, minor floodingSep 16, 2024: 2.05 ft, moderate floodingSep 21, 2024: 1.76 ft, minor floodingSep 26, 2024: 1.94 ft, minor floodingOct 10, 2024: 2.56 ft, moderate floodingOct 14, 2024: 1.52 ft, minor floodingOct 20, 2024: 1.73 ft, minor floodingNov 5, 2024: 1.58 ft, minor floodingNov 14, 2024: 1.87 ft, minor floodingSep 10, 2025: 1.76 ft, minor floodingSep 14, 2025: 1.63 ft, minor floodingOct 1, 2025: 1.59 ft, minor floodingOct 5, 2025: 2.03 ft, moderate floodingOct 11, 2025: 2.15 ft, moderate floodingOct 16, 2025: 1.71 ft, minor floodingOct 29, 2025: 1.65 ft, minor floodingSep 25, 2026: 1.68 ft, minor floodingOct 6, 2026: 1.65 ft, minor floodingOct 10, 2026: 2.10 ft, moderate flooding Highest, 6.00 ft, Oct 12, 1846 1880192019602000

Crests at or above flood stage, by decade

Crests at or above flood stage per decade, St. Johns River at Main Street Bridge (in MHHW) 1840s: 1 1850s: 0 1860s: 0 1870s: 0 1880s: 0 1890s: 0 1900s: 0 1910s: 0 1920s: 0 1930s: 0 1940s: 1 1950s: 0 1960s: 1 1970s: 0 1980s: 2 1990s: 11 2000s: 16 2010s: 26 2020s: 38 38 1840s1860s1880s1900s1920s1940s1960s1980s2000s2020s
  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.

Highest crests

The 50 highest of 133 listed crests.

Highest listed crests, St. Johns River at Main Street Bridge (in MHHW)
1Oct 12, 18466.00+4.50Major—
2Sep 11, 20174.89+3.39Major—
3Sep 9, 19643.49+1.99Major—
4Sep 26, 20043.42+1.92Major—
5Aug 22, 20083.41+1.91Major—
6Oct 19, 19443.38+1.88Major—
7Nov 10, 20223.28+1.78Major—
8Sep 30, 20222.75+1.25Moderate—
9Oct 10, 20242.56+1.06Moderate—
10May 28, 20122.53+1.03Moderate—
11Sep 25, 20082.48+0.98Moderate—
12Sep 6, 20042.45+0.95Moderate—
13Oct 1, 20172.39+0.89Moderate—
14Oct 7, 19962.35+0.85Moderate—
15Sep 15, 20012.29+0.79Moderate—
16May 4, 20132.17+0.67Moderate—
17Oct 5, 20172.17+0.67Moderate—
18Oct 11, 20252.15+0.65Moderate—
19Sep 22, 20202.14+0.64Moderate—
20May 20, 20092.11+0.61Moderate—
21Oct 8, 20162.10+0.60Moderate—
22Oct 10, 20262.10+0.60Moderate—
23Sep 21, 20082.08+0.58Moderate—
24Sep 16, 20242.05+0.55Moderate—
25Oct 5, 20252.03+0.53Moderate—
26Sep 26, 19912.01+0.51Moderate—
27Sep 26, 19922.01+0.51Moderate—
28Oct 10, 20111.97+0.47Minor—
29Oct 19, 20171.95+0.45Minor—
30Nov 18, 20191.94+0.44Minor—
31Sep 26, 20241.94+0.44Minor—
32Aug 25, 19951.93+0.43Minor—
33Oct 7, 20151.93+0.43Minor—
34Oct 13, 20231.93+0.43Minor—
35Oct 3, 19921.87+0.37Minor—
36Nov 14, 20241.87+0.37Minor—
37Sep 19, 20011.86+0.36Minor—
38Jun 27, 20121.86+0.36Minor—
39Oct 5, 20221.86+0.36Minor—
40Oct 8, 19921.84+0.34Minor—
41Oct 12, 20161.84+0.34Minor—
42Sep 29, 20151.83+0.33Minor—
43Sep 18, 20171.80+0.30Minor—
44Nov 7, 20211.79+0.29Minor—
45Sep 12, 20241.79+0.29Minor—
46Sep 6, 19951.77+0.27Minor—
47Oct 5, 20051.76+0.26Minor—
48Sep 24, 20151.76+0.26Minor—
49Sep 21, 20241.76+0.26Minor—
50Sep 10, 20251.76+0.26Minor—

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.

October 12, 1846: 6.00 ft here, major flooding

September 11, 2017: 4.89 ft here, major flooding

September 9, 1964: 3.49 ft here, major 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) this gaugeFL1.56.00 ft, Oct 12, 18467
Mayport (in MHHW)FL1.83.41 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
Mayport (in MHHW)1.83.41 ft, Nov 10, 20221
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 MSBF1, 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.