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Advanced Hydrologic Prediction Service
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This probabilistic forecast is issued by the Southeast River Forecast Center.
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Experimental Short Range Forecast Uncertainty (AHPS) - External Links: Product Description Document | Customer Survey
About this graph
Forecasts for the St. Johns River near Sanford are issued as needed during times of high water, but are not routinely available.
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Upstream Gauge - above Lake Harney Upstream Gauge Downstream Gauge Downstream Gauge - near Deland
Zoom Level:16
Flood Categories (in feet)
Major Flood Stage: 8
Moderate Flood Stage: 7
Flood Stage: 5.5
Action Stage: 4.2
Low Stage (in feet): 0

Historic Crests
(1) 8.96 ft on 10/09/2022
(2) 7.89 ft on 09/02/2008
(3) 7.51 ft on 10/04/2004
(4) 7.23 ft on 09/23/2017
(5) 7.20 ft on 10/08/2017 (P)
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(P): Preliminary values subject to further review.

Recent Crests
(1) 7.00 ft on 11/10/2022 (P)
(2) 8.96 ft on 10/09/2022
(3) 7.20 ft on 10/08/2017 (P)
(4) 7.23 ft on 09/23/2017
(5) 7.89 ft on 09/02/2008
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
(1) -0.22 ft on 05/07/2009
(2) -0.18 ft on 06/18/1989
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
13 Water level rises in parking lots at Lake Monroe Hospital and approaches New Tribes Mission in Sanford.
11 Water enters the Sailpoint Apartments, Lake Monroe Inn, City Hall and approaches the Courthouse in Sanford.
10.5 Water enters the Regatta Shores Apartments and Towne Center Apartments in Sanford.
10 Water enters the old Post Office and Sanford Landing Apartments in Sanford.
9.5 Water encroaches on Sanford Landing Apartments and other low lying structures along the waterfront.
9 Flooding becomes more significant to the Sanford waterfront area. Water approaches low lying areas on the waterfront.
8 Flooding becomes more significant to low lying structures and marinas along the river in Volusia and Seminole counties, including Sanford, Enterprise and Lake Monroe.
7.4 Many secondary roads are flooded and may become impassable around Lake Monroe and in Enterprise. Rising water begins to impact more areas of Stone Island and water approaches homes in River Oaks Estates.
7 Water begins to move over sea wall around Lake Monroe and rises into grassy areas around the sea wall. Water begins to encroach on Seminole Boulevard.
6.5 Water enters a few lower lying homes in the Stone Island and Stillbrook subdivisions. The road into Stone Island becomes impassable. Water rises onto low lying property near Sanford. Parks and docks are flooded near Lake Monroe.
6.2 Water completely surrounds many homes in the Stone Island and Still Brook subdivisions. Pool enclosures and patios become flooded. Water covers many of the roads. Flooding occurs on Enterprise Road and in the Bethel Loop subdivision.
6 Water encroaches on low lying roads, also pool enclosures and patios in the Stone Island area.
5.5 Water surrounds homes and covers some driveways in the Stone Island area near Enterprise in Volusia County. Water enters yards and floods docks in the River Oaks Estates subdivision.
4.2 No wake zone and parks closed along the river, also some boat ramps closed.

Other Real-time and/or Archive Data Sources:

Additional Information Collapse
Potential River Levels - Used to
Potential River Levels
Used to Estimate the Chance of Flooding and the Range of Possible River Levels
10 Day (HEFS) 7 Day (NAEFS) 7 Day (GEFS)
HEFS Ensemble NAEFS Ensemble GEFS Ensemble

Note: Use the official hydrograph at the top of this web page for river levels within the next 72 Hours.

Collaborative Agencies Collapse
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
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Page last modified: 2-Nov-2020 7:30 PM
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