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Hydrograph River at a Glance Download
Atlantic Coast at Hyannisport (IN MLLW) Tide Height (ft)USGS--Water Resources of the United StatesHYPM3(plotting HMIRP) Graph Created (5:45PM May 13, 2024)ObservedLatest observed value: 2.38 ft at 9:48 AM EDT 8-May-2024. Flood Stage is 5 ft
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Tabular Data (UTC)
Tabular Data (EDT)
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Datum: Not Available
Metadata
NOTE: Please refer to our Coastal Hazard Message for specific information regarding Coastal Flood Watches, Warnings and Advisories. Actual impacts from any coastal flooding event may vary due to factors such as rainfall, wave action, and the number of tide cycles during which there is an onshore flow. During tropical cyclones, please refer here for additional storm surge information.

NOTE: During a Tropical Storm or Hurricane Watch or Warning, inundation mapping provided by the National Hurricane Center (go to the web site and select the storm of interest) is available and reflects the reasonable worst case scenario.

NOTE: Graphical forecasts are not available for the Atlantic Coast at Hyannisport (IN MLLW). 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: 8.5
Moderate Flood Stage: 6.5
Flood Stage: 5
Action Stage: 4
Low Stage (in feet): -9999

Historic Crests
(1) 8.30 ft on 12/18/2023
(2) 7.70 ft on 12/23/2022
(3) 6.75 ft on 01/13/2024
(4) 5.63 ft on 03/10/2024
(5) 5.36 ft on 12/27/2023
(6) 5.30 ft on 01/10/2024
(7) 5.30 ft on 12/18/2023
(8) 5.23 ft on 12/24/2023
(9) 5.04 ft on 03/17/2024

(P): Preliminary values subject to further review.

Recent Crests
(1) 5.04 ft on 03/17/2024
(2) 5.63 ft on 03/10/2024
(3) 6.75 ft on 01/13/2024
(4) 5.30 ft on 01/10/2024
(5) 5.36 ft on 12/27/2023
(6) 5.23 ft on 12/24/2023
(7) 8.30 ft on 12/18/2023
(8) 5.30 ft on 12/18/2023
(9) 7.70 ft on 12/23/2022

(P): Preliminary values subject to further review.

Low Water Records
Currently none available.
Zoom Level:16
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Gauge LocationGauge Map Marker
 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 Collapse
If you notice any errors in the below information, please contact our Webmaster
8 Alternate travel routes are needed. Flooding 3 feet deep or higher affects coastal roads from Falmouth to Hyannisport where debris may wash onto roads when rough seas occur. In Hyannis Harbor, smaller docks are submerged and portions of Ocean Street will have flooding up to 3 feet deep. In Yarmouth, flooding affects neighborhoods near the harbor including Shore Road and Berry Avenue, which are flooded with up to 3 feet of water.
6.5 Many roads become impassable around high tide. Flooding 2 to 3 feet deep affects coastal roads from Falmouth to Hyannisport where debris may wash onto roads when rough seas occur. In Hyannis Harbor, smaller docks are submerged and portions of Ocean Street will have flooding 1 to 2 feet deep. In Yarmouth, flooding affects neighborhoods near the harbor including Shore Road and Berry Avenue, which are flooded with 1 to 3 feet of water.
5.5 Some roads may become impassable around high tide. Flooding 1 to 2 feet deep affects coastal roads from Falmouth to Hyannisport, where some debris may wash onto roads when rough seas occur. In Hyannis Harbor, smaller docks may be submerged and flooding up to 1 foot deep affects parts of Ocean Street.
5 Some vulnerable coastal roads may briefly become impassable around high tide. Shallow flooding less than one foot deep affects low lying coastal roads from Falmouth to Hyannisport, as well as docks in Hyannis Harbor. Some debris may wash onto coastal roads when rough seas occur.
About This Location Collapse

Latitude: 41.649800° N, Longitude: 70.277400° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame		 Gauge Height Flood Stage Uses
NWS stage 0 ft 5 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 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 Not Available Not Available  
Additional Information Collapse
Forecasts for this site are currently under development and will be added in the future. Vertical Datum references a tidal datum...for more information see https://www.tidesandcurrents.noaa.gov.
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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.
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