Web Portal Changes: The Advanced Hydrologic Prediction Service (AHPS) hosted at https://water.weather.gov will be replaced by the National Water Prediction Service (NWPS), with a target of Spring 2024. Existing AHPS content and features will be preserved and expanded within NWPS. The NWS is now accepting feedback on NWPS. Please visit https://www.weather.gov/owp/operations for more information.

Experimental National Water Center Products: Flood Inundation Mapping services are now available for 10% of the U.S. population. Please visit https://www.weather.gov/owp/operations for more information. The National Hydrologic Discussion, Area Hydrologic Discussion, Flood Hazard Outlook, and real-time geospatial services depicting River Forecast Center and National Water Model forecasts, continue to be accessible via the URL above, as described in the StoryMap here.

Weather Forecast Office Tallahassee, FL

Southeast River Forecast Center

Hydrograph

River at a Glance

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NOTE: Water levels are referenced to the Mean Higher High Water (MHHW) Datum. This datum can be used to approximate sea water inundation of normally dry ground near the coast. For specific impacts, please refer to the statements on this page. NOTE: Gauge reading affected by tides. NOTE: Forecasts for the Gulf of Mexico Tide Gauge at Apalachicola (in MHHW) are issued routinely year-round.

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Upstream Gauge

Flood Categories (in feet) Major Flood Stage: 6 Moderate Flood Stage: 4 Flood Stage: 2.2 Action Stage: 0.9 Low Stage (in feet): -2.4 Historic Crests (1) 7.72 ft on 10/10/2018 (2) 6.50 ft on 07/10/2005 (3) 4.69 ft on 06/19/1972 (4) 4.29 ft on 09/03/1998 (5) 3.62 ft on 09/16/2004 Show More Historic Crests (P): Preliminary values subject to further review. Recent Crests (1) 2.84 ft on 08/30/2023 (2) 1.39 ft on 01/02/2022 (3) 3.37 ft on 08/16/2021 (4) 3.11 ft on 09/16/2020 (5) 2.02 ft on 12/20/2018 Show More Recent Crests (P): Preliminary values subject to further review. Low Water Records Currently none available. For more information on your flood risk go to www.floodsmart.gov. Show FEMA's National Flood Hazard Layers FEMA's National Flood Hazard Layers not showing? Why aren't the FEMA National Flood Hazard Layers showing on the ESRI Map? Possible reasons: There are no FEMA National Flood Hazard Layers for the location which you are viewing on ESRI Maps. The FEMA Web Mapping Service (WMS) is down. Note: Your zoom level may have changed. ESRI's zoom levels must be between 14 and 16 to show National Flood Hazard layers.

Zoom Level:14 Legend FEMA Layer Gauge Location Disclaimer 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

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12	Flooding of historic proportions in Apalachicola, Eastpoint and Indian Lagoon. Homes near the coast not elevated are likely destroyed. Some elevated structures may flood at this level.
9.01	In Gulf County, water will break through the dune line in spots along the south facing beaches near Indian Lagoon westward to the intersection of Highway 30A and 30E. Homes in these areas not elevated are prone to flooding.
9	Catastrophic flooding in Apalachicola, Eastpoint and Indian Lagoon. Access into Eastpoint or Apalachicola by US-98 from the east or west or SR-65 from the north is impossible. Flooding in Apalachicola extends further inland across US-98 near the airport. In downtown Apalachicola, parts of H Avenue and Palmetto Street (east of 7th street) could flood up to 4 feet deep. In Eastpoint, structures not elevated along and south of US-98 experience significant damage and could be destroyed.
8.02	Access to Eastpoint or Apalachicola through US-98 from the east or west becomes restricted. North of Eastpoint, 1 to 2 feet of water flood both sides of the bridge over Cash Creek along SR-65. Water reaches the base of the bridge along SR-65 above Whiskey George Creek.
8.01	Around Indian Lagoon, non-elevated structures will experience water levels up to 5 feet deep. Significant structural damage due to wave-action is likely. Significant beach erosion and sand-dune displacement will occur. In Carrabelle, structures near and south of Buck O'Neil Park become flooded up to 5 feet. On Timber Island, low-lying homes near the shore become flooded up to 3 feet deep. Docks, piers, and other vulnerable structures near the coast could experience damage due to wave action.
8	Oceanside structures at Apalachicola and Eastpoint become flooded up to 5 feet deep. Significant flooding spreads to downtown Apalachicola with water 3 feet deep in some locations. Structures near the shore will experience significant damage due to wave-action. At Eastpoint, significant flooding spreads further inland. Homes and buildings northwest of US-98 flood up to 3 feet deep.
6	Significant flooding in Apalachicola, Eastpoint and Indian Pass Lagoon. The causeway between Apalachicola and Eastpoint floods in several places and is subject to closure. In Apalachicola, structures east of Market Street and south of Bay Avenue not elevated experience significant flooding. In Eastpoint, US-98 floods in several locations. Flooding expands for areas near East Bay Drive and Rose Drive. Highway 30A near Indian Lagoon is impassible at this level.
5	In Apalachicola, US-98 is subject to flooding near the airport. Flooding continues to extend inland affecting areas primarily along Bay Avenue, east of Market Street and north of Apalachicola along the river at Waddell Road and Bay City Road. In Eastpoint, Patton Drive floods at this level. Areas along East Bay Drive and Rose Drive begin to flood. Around Indian Lagoon, structures not elevated flood, with water levels up to 2 feet deep. Indian Pass Road is impassible.
4	The St George Island Causeway near Eastpoint begins to flood and is subject to closure above this level. In Apalachicola, areas between Market Street and the waterfront flood with a water depth up to 2 feet. Bay Avenue begins to flood, with structures not elevated impacted. North of Apalachicola, areas along Waddell Road and Bay City Road near the river begin to flood. In Gulf County, flooding begins to affect the backyards of some residences on the south side of Indian Lagoon
3	In Apalachicola, water floods backyards of residences on Bay Avenue. Market Street floods near the Orman House State Park. In Gulf County, Indian Pass Road begins to flood at this level.
2.7	In Apalachicola, Water Street floods as well as the Battery Park under the John Gorrie Bridge. In Eastpoint, low lying areas near the causeway begin to flood at this level.
2.2	In Gulf County, water will overwash SR-30E at the Stump Hole. Backyards of residences on the north side of Indian Pass Lagoon will begin to flood. Water approaches Indian Pass Road on the west side of the Lagoon.
1.9	The boat ramp at the city docks in Apalachicola will flood.
Photos (1) Apalachicola River Tide Gage - KML

About This Location

Latitude: 29.726667° N, Longitude: 84.981667° W, Horizontal Datum: NAD83/WGS84 River Stage Reference Frame Gauge Height Flood Stage Uses NWS stage 0 ft 2.2 ft Interpreting hydrographs and NWS watch, warnings, and forecasts, and inundation maps Vertical Datum Elevation (gauge height = 0) Elevation (gauge height = flood stage) Elevation information source NAVD88 0.85 3.05 Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps NGVD 29 Not Available Not Available Older USGS topographic maps, NGVD29 benchmarks MSL Not Available Not Available Older USGS topographic maps, MSL benchmarks Other 0.00 2.2 Mean Higher High Water - used to approximate inundation

Resources

Hydrologic Resources Text Products Past Precipitation Forecast Precipitation River Forecast Centers River Stage Summary SERFC Precipitation Frequency Inundation Mapping Locations Drought Monitor

Additional Resources Area Hydrographs NWS Precipitation and River Forecasting AHPS Iframes for Developers Mobile iNWS for emergency management River Monitor - Tallahassee River Monitor - Jacksonville

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