Atlantic Coast at Hyannisport (IN MLLW)
Stage at this gauge is reported IN MLLW.
Flood levels
Official flood levels at this gauge: action stage begins at 4.0 ft; minor flooding begins at 5.0 ft; moderate flooding begins at 6.5 ft; major flooding begins at 8.5 ft.
| Action stage | 4.0 ft |
|---|---|
| Minor flooding | 5.0 ft |
| Moderate flooding | 6.5 ft |
| Major flooding | 8.5 ft |
Highest recorded crests
- 8.3 ft on Dec 18, 2023 (historic crest)
- 7.7 ft on Dec 23, 2022 (historic crest)
- 6.8 ft on Jan 13, 2024 (historic crest)
- 5.6 ft on Mar 10, 2024 (historic crest)
What the water does
National Weather Service impact statements for this gauge, in the Weather Service's own words.
| 5.0 ft | 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. |
|---|---|
| 5.5 ft | 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. |
| 6.5 ft | 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. |
| 8.0 ft | 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. |
Forecast office: NWS Norton · River Forecast Center: Northeast River Forecast Center.
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Nearby stations and gauges
- Hyannis Port NOAA tide station · 1.7 mi
- South Yarmouth NOAA tide station · 5.0 mi
- Barnstable Harbor NOAA tide station · 5.0 mi
- Dennisport NOAA tide station · 8.4 mi
- Cotuit Highlands NOAA tide station · 8.7 mi
- Herring River at North Harwich NWS gauge · 9.4 mi