St. Marks River at St. Marks (in MHHW)
Highest listed crest 8.01 ftFlood stage 2.0 ft10 crests since 2015
The St. Marks River at St. Marks (in MHHW) crested at major flood stage 1 time among the 10 crests the National Weather Service lists from 2015 to 2020. The highest, 8.01 ft on October 10, 2018, was major flooding, 6.01 feet above flood stage.
The gauge
- Highest listed crest
- 8.01 ft
- October 10, 2018
- Flood stage
- 2.0 ft
- Major flooding from 5.1 ft
- Crests at major
- 1
- 107th of 237 gauges in Florida
- Most recent flood crest
- September 16, 2020
- 2.02 ft, minor flooding
Flood stages
The thresholds the National Weather Service uses for this gauge today, and how many listed crests reached each.
| Action stage | 1.2 | 2 | Jan 22, 2017 |
| Flood stage (minor) | 2.0 | 6 | Sep 16, 2020 |
| Moderate flood stage | 3.4 | 1 | Sep 2, 2016 |
| Major flood stage | 5.1 | 1 | Oct 10, 2018 |
Every listed crest
10 crests from 2015 to 2020. Filled: at or above flood stage. Hover a crest for its date and stage.
Crests at or above flood stage, by decade
- 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.
- 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
| 1 | Oct 10, 2018 | 8.01 | +6.01 | Major |
| 2 | Sep 2, 2016 | 5.08 | +3.08 | Moderate |
| 3 | May 28, 2018 | 2.89 | +0.89 | Minor |
| 4 | Oct 8, 2017 | 2.73 | +0.73 | Minor |
| 5 | Jun 6, 2016 | 2.72 | +0.72 | Minor |
| 6 | Feb 24, 2016 | 2.33 | +0.33 | Minor |
| 7 | Oct 27, 2015 | 2.06 | +0.06 | Minor |
| 8 | Sep 16, 2020 | 2.02 | +0.02 | Minor |
| 9 | Jan 15, 2016 | 1.92 | −0.08 | Action |
| 10 | Jan 22, 2017 | 1.56 | −0.44 | Action |
The worst floods along the St. Marks River
For this gauge's highest crests, the other gauges on the St. Marks River that crested above flood stage within a week.
September 2, 2016: 5.08 ft here, moderate flooding
- Newport on Old Magnolia Rd (in stage datum)FL · Sep 6, 2016 · 8.35 ft · Minor
Gauges on the St. Marks River
Flood gauges sharing the river's name, linked within 80 miles of one another.
| St. Marks (in MHHW) this gauge | FL | 8.01 ft, Oct 10, 2018 | 1 |
| Newport on Old Magnolia Rd (in stage datum) | FL | 13.88 ft, Aug 25, 2008 | 3 |
Other gauges in Wakulla County
| Arran | 29.27 ft, Sep 23, 2000 | 0 |
| Crawfordville | 16.60 ft, Dec 25, 2014 | 0 |
| Curtis Mill, US-319 (In NAVD88) | 7.92 ft, Oct 10, 2018 | 0 |
| Ochlockonee River State Park (in MHHW) | 4.88 ft, Sep 27, 2024 | 0 |
| Smith Creek (CR 366) | 29.75 ft, Sep 25, 1969 | 1 |
| Sopchoppy River Entrance in Ochlockonee Bay (in MHHW) | 3.28 ft, Oct 17, 2024 | 0 |
| Sopchoppy (FR 343) | 36.80 ft, Jun 26, 2012 | 3 |
| US-98 (in NAVD88) | 5.52 ft, Sep 27, 2024 | 0 |
| Rivers Edge Road (in MHHW) | 4.85 ft, Sep 27, 2024 | 0 |
| Newport on Old Magnolia Rd (in stage datum) | 13.88 ft, Aug 25, 2008 | 3 |
| Tide Station at Shell Point Canal (In MHHW) | 8.28 ft, Oct 10, 2018 | 3 |
| Tide Station at Spring Creek Boat Ramp (in MHHW) | 6.88 ft, Sep 27, 2024 | 1 |
| Tide Station near Spring Creek Boat Ramp (In MHHW) | 8.76 ft, Oct 10, 2018 | 1 |
Wakulla County: every hazard · River floods across the country · Florida
NOAA National Water Prediction Service, gauge MRKF1, 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.