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Web Portal Changes: The Advanced Hydrologic Prediction Service (AHPS) hosted at 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 for more information.

Experimental National Water Center Products: Flood Inundation Mapping services are now available for 10% of the U.S. population. Please visit 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.

Hydrograph River at a Glance Download
Gulf of Mexico Tide Gauge at McKay Bay Entrance (in MHHW) Stage (ft)MCYF1(plotting HMIRG) Graph Created (6:38AM Dec 7, 2023)Flood Stage is 2.7 ft
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About this graph
Tabular Data (UTC)
Tabular Data (EST)
XML Data
RSS Files
Datum: Not Available
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: Graphical forecasts are not available for the Gulf of Mexico Tide Gauge at McKay Bay Entrance (in MHHW). During times of high water, forecast crest information can be found in the text products.

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Flood Categories (in feet)
Major Flood Stage: 7.3
Moderate Flood Stage: 5
Flood Stage: 2.7
Action Stage: 2
Low Stage (in feet): -4

Historic Crests
Currently none available.

Recent Crests
Currently none available.

Low Water Records
Currently none available.
Zoom Level:14
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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
10 Grounds of Tampa General Hospital under 1 to 3 feet of water. Many homes within a block of Bayshore Blvd are flooded. Most of Port Tampa Bay is flooded. Half of Channelside south of the Selmon Expressway is under 1 to 3 feet of water.
7.3 Davis Island under 1 to 3 feet of water...excluding Tampa General Hospital. All of Bayshore Blvd is flooded. Portions of Harbor Island begins to flood. Most of Apollo Beach is flooded. Flooding expands into southern Ybor City along Adamo Drive.
5 Entrance to Port Tampa Bay begins to flood. Low lying portions of Davis Island including Peter O. Knight Airport begins to flood. A few homes near the northeast end of Bayshore Blvd begin to flood. Homes on the canals of Apollo Beach begin to flood.
4 Some homes near the northwest end of McKay Bay begin to flood. Northeast portion of Bayshore Blvd under 1 to 2 feet of water.
2.7 Portions of South 22nd St crossing McKay Bay and the northeast end of Bayshore Blvd are flooded. Homes on the south side of the Alafia River begin to flood.
2 Water approaches South 22nd Street crossing McKay Bay and is near the top of the sea wall at northeast end of Bayshore Blvd.
About This Location Collapse

Latitude: 27.913300° N, Longitude: 82.425000° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft 2.7 ft Interpreting hydrographs and NWS watch, warnings, and forecasts, and inundation maps
Vertical Datum Elevation
(gauge height = 0)
(gauge height = flood stage)
Elevation information source
NAVD88 Not Available Not Available 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 -2.68 Not Available Mean Higher High Water. Used to approximate inundation.
Additional Information Collapse
Tide levels are reported in MHHW.
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Hydrologic Resources Additional Resources
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
National Weather Service
Tampa Bay Area Weather Forecast Office
2525 14th Ave SE
Ruskin, FL 33570
(813) 645-2323
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Page last modified: 2-Nov-2020 7:30 PM
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