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Web Portal Changes: In Spring 2024, the Advanced Hydrologic Prediction Service (AHPS) hosted at will be replaced by the National Water Prediction Service (NWPS) at a repurposed A preview of NWPS is available here, where you can see your station hydrograph by replacing SSSSS with the station 5-character id:

Flood Inundation Mapping: Experimental real-time flood Inundation mapping services for 10% of the United States are now available via the NWS Map Viewer. Additional products and geospatial services depicting River Forecast Center and National Water Model forecasts continue to be accessible as described in the StoryMap here.

Please visit for more information.

Hydrograph River at a Glance Download
Atlantic Coast at Sunset Beach Stage (ft)SNSN7(plotting HMIRG) Graph Created (12:08PM Mar 4, 2024)Flood Stage is 8 ft
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About this graph
Tabular Data (UTC)
Tabular Data (EST)
XML Data
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Datum: Not Available
NOTE: Forecasts are not available for the Atlantic Coast at Sunset Beach. Only observed stages are available for this point.
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Flood Categories (in feet)
Major Flood Stage: 11
Moderate Flood Stage: 9
Flood Stage: 8
Action Stage: 7.5
Low Stage (in feet): -9999

Historic Crests
(1) 18.00 ft on 10/15/1954
(2) 7.55 ft on 10/09/2006
(3) 7.43 ft on 10/08/2006
(4) 7.36 ft on 11/07/2006
(5) 7.36 ft on 02/28/2005
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 7.14 ft on 06/16/2007
(2) 7.20 ft on 06/14/2007
(3) 7.29 ft on 06/13/2007
(4) 7.28 ft on 12/25/2006
(5) 7.36 ft on 11/07/2006
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
(1) -3.17 ft on 03/12/2005
(2) -3.16 ft on 04/16/2007
(3) -2.43 ft on 03/08/2005
(4) -2.35 ft on 02/19/2007
(5) -2.23 ft on 03/20/2007
Show More Low Water Records
Zoom Level:16
KML Image
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
11 Life threatening, and widespread coastal flooding is expected with significant damage to coastal structures and roadways. Water may enter beachfront structures not elevated on pilings. Nearly all waterfront and coastal access roads will be closed, possibly for an extended period of time. Significant inundation of coastal, bayside, sound-side tributaries and tidal creeks is likely.
9 On the Brunswick County coast, vulnerable areas include several neighborhoods off of Bald Head Rd, portions of Ocean Dr. in the Old Yaupon area, portions of East and West Beach Dr. in Long Beach, and portions of Dolphin Drive east of Middleton Ave in Long Beach. High astronomical tides along with heavy rainfall can create flooding along Ocean Blvd. in Holden Beach. In Sunset Beach, one mile inland on Clubhouse Rd. near Calabash Creek Bridge can flood with high astronomical tides and heavy rain.
8 Minor coastal flooding affects the southern shore of Bald Head Island along Bald Head Road, and the east end of Ocean Isle Beach. Minor flooding can also occur on roadways near tidal marshes and creeks.
7.5 Minor flooding of the prone low-lying coastal locations possible if accompanied by other factors, such as persistent onshore wind and wave action.
About This Location Collapse

Latitude: 33.865000° N, Longitude: 78.506667° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft 8 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
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Hydrologic Resources Additional Resources
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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
Wilmington Weather Forecast Office
2015 Gardner Drive
Wilmington, NC 28405
(910) 762-4289
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Page last modified: 2-Nov-2020 7:30 PM
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