St. Johns River at Main Street Bridge (in MHHW)
Duval County, Florida
The past week
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What floods at each level
- 2.9 ft
Major Flooding - 2.9 feet above MHHW - Extensive inundation of structures and roads in the area is expected. Evacuations of people or transfer of property to higher ground is likely and the advice of Emergency Management should be heeded.
- 1.9 ft
Moderate Flooding - 1.9 feet above MHHW - Some flooding of structures and roads along the St. Johns River and other inland waterways is expected. Evacuation of people or property to higher ground is possible and the advice of Emergency Management or local officials should be heeded.
- 1.4 ft
Minor Flooding - 1.4 feet above MHHW - Flooding of low lying areas, city parks and normally flood prone roadways is likely. Some boat ramps and docks along the St. Johns River and other inland waterways will begin to flood.
- 0.9 ft
Action Stage - 0.9 feet above MHHW - Minor Flooding possible. Should water levels continue rising...preparations to protect property should begin. Flooding may begin to impact low lying roads along Hogan Creek behind the Maxwell House Coffee Plant, and the SouthHampton district along Utah Ave & Alamo St.
Highest crests on record
| Date | Level | Flow |
|---|---|---|
| Oct 12, 1846 | 6 ft | — |
| Sep 11, 2017 | 4.89 ft | — |
| Sep 8, 1964 | 3.49 ft | — |
More on St. Johns River
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