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St. Johns River above Lake Harney

Highest listed crest 12.67 ftFlood stage 8.0 ft47 crests since 1924

The St. Johns River above Lake Harney crested at major flood stage 7 times among the 47 crests the National Weather Service lists from 1924 to 2024. The highest, 12.67 ft on October 3, 2022, was major flooding, 4.67 feet above flood stage. 12 other gauges on the St. Johns River crested above flood stage within a week of it, 2 at their own highest listed crest.

The gauge

Highest listed crest
12.67 ft
October 3, 2022; 19,816 cubic feet per second
Flood stage
8.0 ft
Major flooding from 10.0 ft
Crests at major
7
26th of 237 gauges in Florida
Most recent flood crest
October 15, 2024
10.15 ft, major flooding
Location
Seminole County
Near Oviedo (9.9 mi), Winter Springs (14.3 mi)

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 above Lake Harney
Action stage6.013Apr 3, 1996The level at which the NWS or its partners begin to take action
Flood stage (minor)8.04Jul 10, 2018Minimal or no property damage, but possibly some public threat
Moderate flood stage9.05Nov 13, 2022Some inundation of structures and roads near the stream
Major flood stage10.07Oct 15, 2024Extensive inundation of structures and roads

Every listed crest

47 crests from 1924 to 2024. Filled: at or above flood stage. Hover a crest for its date and stage.

Listed crests at the St. Johns River above Lake Harney, 1924 to 2024 2468101214ft Flood stage 8.0 ftMajor 10.0 ft Oct 1, 1924: 10.10 ft, major floodingOct 13, 1953: 10.62 ft, major floodingJul 31, 1982: 7.39 ft, action stage; 7,690 cubic feet per secondOct 3, 1982: 6.38 ft, action stage; 6,070 cubic feet per secondJan 3, 1984: 4.43 ft, below flood stage; 2,910 cubic feet per secondApr 19, 1984: 4.40 ft, below flood stage; 2,880 cubic feet per secondSep 28, 1984: 4.58 ft, below flood stage; 3,070 cubic feet per secondAug 21, 1985: 4.31 ft, below flood stage; 3,020 cubic feet per secondSep 9, 1985: 5.68 ft, below flood stage; 5,830 cubic feet per secondSep 25, 1985: 7.33 ft, action stage; 7,610 cubic feet per secondOct 1, 1985: 7.13 ft, action stageJan 16, 1986: 6.47 ft, action stage; 4,220 cubic feet per secondApr 4, 1987: 6.27 ft, action stage; 5,630 cubic feet per secondDec 3, 1987: 6.23 ft, action stage; 6,090 cubic feet per secondMar 24, 1988: 4.22 ft, below flood stage; 2,700 cubic feet per secondSep 12, 1988: 4.71 ft, below flood stage; 3,210 cubic feet per secondNov 28, 1988: 4.26 ft, below flood stage; 3,560 cubic feet per secondJan 28, 1989: 4.21 ft, below flood stage; 3,030 cubic feet per secondNov 4, 1989: 3.82 ft, below flood stage; 3,030 cubic feet per secondDec 29, 1989: 3.69 ft, below flood stage; 2,710 cubic feet per secondApr 29, 1991: 3.45 ft, below flood stage; 2,590 cubic feet per secondAug 2, 1991: 6.95 ft, action stage; 5,950 cubic feet per secondOct 11, 1991: 7.52 ft, action stage; 6,570 cubic feet per secondAug 24, 1992: 6.71 ft, action stage; 6,740 cubic feet per secondOct 12, 1992: 7.75 ft, action stage; 7,760 cubic feet per secondFeb 1, 1993: 4.14 ft, below flood stage; 3,060 cubic feet per secondApr 1, 1993: 3.79 ft, below flood stage; 2,830 cubic feet per secondJun 21, 1994: 4.09 ft, below flood stage; 5,190 cubic feet per secondAug 13, 1994: 5.82 ft, below flood stage; 5,600 cubic feet per secondSep 30, 1994: 8.00 ft, minor floodingNov 21, 1994: 9.45 ft, moderate floodingOct 24, 1995: 8.71 ft, minor floodingJan 6, 1996: 6.04 ft, action stage; 4,200 cubic feet per secondMar 16, 1996: 5.20 ft, below flood stage; 3,930 cubic feet per secondApr 3, 1996: 6.68 ft, action stage; 4,910 cubic feet per secondSep 14, 1996: 3.85 ft, below flood stage; 2,750 cubic feet per secondOct 22, 1999: 9.21 ft, moderate floodingSep 21, 2001: 8.61 ft, minor floodingSep 12, 2004: 9.50 ft, moderate floodingOct 2, 2004: 10.08 ft, major floodingNov 1, 2005: 9.11 ft, moderate floodingAug 28, 2008: 11.15 ft, major floodingSep 19, 2017: 10.52 ft, major floodingJul 10, 2018: 8.73 ft, minor floodingOct 3, 2022: 12.67 ft, major flooding; 19,816 cubic feet per secondNov 13, 2022: 9.25 ft, moderate floodingOct 15, 2024: 10.15 ft, major flooding Highest, 12.67 ft, Oct 3, 2022 19401960198020002020

Crests at or above flood stage, by decade

Crests at or above flood stage per decade, St. Johns River above Lake Harney 1920s: 1 1930s: 0 1940s: 0 1950s: 1 1960s: 0 1970s: 0 1980s: 0 1990s: 4 2000s: 5 5 2010s: 2 2020s: 3 1920s1930s1940s1950s1960s1970s1980s1990s2000s2010s2020s
  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: 8.85 ft on Mar 1, 1998.

Highest crests

Highest listed crests, St. Johns River above Lake Harney
1Oct 3, 202212.67+4.67Major19,816
2Aug 28, 200811.15+3.15Major—
3Oct 13, 195310.62+2.62Major—
4Sep 19, 201710.52+2.52Major—
5Oct 15, 202410.15+2.15Major—
6Oct 1, 192410.10+2.10Major—
7Oct 2, 200410.08+2.08Major—
8Sep 12, 20049.50+1.50Moderate—
9Nov 21, 19949.45+1.45Moderate—
10Nov 13, 20229.25+1.25Moderate—
11Oct 22, 19999.21+1.21Moderate—
12Nov 1, 20059.11+1.11Moderate—
13Jul 10, 20188.73+0.73Minor—
14Oct 24, 19958.71+0.71Minor—
15Sep 21, 20018.61+0.61Minor—
16Sep 30, 19948.000.00Minor—
17Oct 12, 19927.75−0.25Action7,760
18Oct 11, 19917.52−0.48Action6,570
19Jul 31, 19827.39−0.61Action7,690
20Sep 25, 19857.33−0.67Action7,610
21Oct 1, 19857.13−0.87Action—
22Aug 2, 19916.95−1.05Action5,950
23Aug 24, 19926.71−1.29Action6,740
24Apr 3, 19966.68−1.32Action4,910
25Jan 16, 19866.47−1.53Action4,220
26Oct 3, 19826.38−1.62Action6,070
27Apr 4, 19876.27−1.73Action5,630
28Dec 3, 19876.23−1.77Action6,090
29Jan 6, 19966.04−1.96Action4,200
30Aug 13, 19945.82−2.18Below flood stage5,600
31Sep 9, 19855.68−2.32Below flood stage5,830
32Mar 16, 19965.20−2.80Below flood stage3,930
33Sep 12, 19884.71−3.29Below flood stage3,210
34Sep 28, 19844.58−3.42Below flood stage3,070
35Jan 3, 19844.43−3.57Below flood stage2,910
36Apr 19, 19844.40−3.60Below flood stage2,880
37Aug 21, 19854.31−3.69Below flood stage3,020
38Nov 28, 19884.26−3.74Below flood stage3,560
39Mar 24, 19884.22−3.78Below flood stage2,700
40Jan 28, 19894.21−3.79Below flood stage3,030
41Feb 1, 19934.14−3.86Below flood stage3,060
42Jun 21, 19944.09−3.91Below flood stage5,190
43Sep 14, 19963.85−4.15Below flood stage2,750
44Nov 4, 19893.82−4.18Below flood stage3,030
45Apr 1, 19933.79−4.21Below flood stage2,830
46Dec 29, 19893.69−4.31Below flood stage2,710
47Apr 29, 19913.45−4.55Below flood stage2,590

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 3, 2022: 12.67 ft here, major flooding

August 28, 2008: 11.15 ft here, major flooding

September 19, 2017: 10.52 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 Harney this gaugeFL8.012.67 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)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 Seminole County

Flood gauges in Seminole County
ALTAMONTE SPRINGS 2N28.531.09 ft, Sep 29, 20225

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

NOAA National Water Prediction Service, gauge GENF1, 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.