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This probabilistic forecast is issued by the Southeast River Forecast Center.
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About this graph
Forecasts for the St. Marys River near Macclenny are issued as needed during times of high water, but are not routinely available.
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Zoom Level:14
Flood Categories (in feet)
Major Flood Stage: 19
Moderate Flood Stage: 15
Flood Stage: 12
Action Stage: 10
Low Stage (in feet): 1.5

Historic Crests
(1) 24.38 ft on 06/28/2012
(2) 23.25 ft on 09/13/1964
(3) 22.86 ft on 04/05/1973
(4) 22.32 ft on 09/12/2017
(5) 22.29 ft on 09/25/1947
(6) 21.97 ft on 04/03/1948
(7) 21.96 ft on 09/07/1950
(8) 21.90 ft on 09/20/1928
(9) 21.23 ft on 10/22/1950
(10) 21.14 ft on 08/24/2008
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(P): Preliminary values subject to further review.

Recent Crests
(1) 13.31 ft on 03/26/2022
(2) 14.52 ft on 03/14/2022
(3) 13.08 ft on 11/08/2021
(4) 13.33 ft on 09/24/2021
(5) 17.54 ft on 08/07/2021
(6) 12.54 ft on 07/29/2021
(7) 17.33 ft on 07/10/2021
(8) 13.49 ft on 02/20/2021
(9) 13.39 ft on 02/17/2021
(10) 14.47 ft on 08/14/2020
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
(1) 0.04 ft on 06/04/1927
(2) 0.24 ft on 06/09/1943
(3) 0.34 ft on 06/11/1945
(4) 0.38 ft on 02/12/1928
(5) 0.44 ft on 06/08/1935
Show More Low Water Records
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Gauge LocationGauge Map Marker
Latitude/Longitude Disclaimer: The gauge location shown in the above map is the approximate location based on the latitude/longitude coordinates provided to the NWS by the gauge owner.
Flood Impacts & Photos Collapse
If you notice any errors in the below information, please contact our Webmaster
20 High banks on the Florida side begin to overflow. Trailers and houses along the river in Baker County are endangered. Trailers and houses on the Georgia side near Stokesville are endangered.
17 High water on the river reaches the bottom of the Stokes Road Bridge.
16 Access roads on both sides of the river in Florida and Georgia are flooded, including the entire low lying stretch of St. Mary's River Bluff Road on the Georgia side which cuts off 40 to 50 homes. On the Florida side, the lower end of St. Mary's Cove Road past the public boat ramp becomes flooded and cuts off access to 20 to 30 homes. The Stokes Road Bridge over the river is generally closed due to high water.
15 Flooding begins to impact the lower end of Steel Bridge Road on the Florida side and cuts off access to the river gage as well as access to several homes.
14 Flooding of bottomlands along the river and some lower access roads including the lower half of St. Mary's River Bluff Road which cuts off 15 to 20 homes on the Georgia side.
12 Minor flooding of low lying areas and timber lands including some properties along St. Mary's River Bluff Road and the Cypress Landing Resort on the Georgia side.

Other Real-time and/or Archive Data Sources:

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The National Weather Service prepares its forecasts and other services in collaboration with agencies like the US Geological Survey, US Bureau of Reclamation, US Army Corps of Engineers, Natural Resource Conservation Service, National Park Service, ALERT Users Group, Bureau of Indian Affairs, and many state and local emergency managers across the country. For details, please click here.
NWS Information
National Weather Service
Jacksonville Weather Forecast Office
13701 Fang Drive
Jacksonville, FL 32218
(904) 741-4370
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Page last modified: 2-Nov-2020 7:30 PM
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