Atlantic Coast at Portland (IN MLLW)
Stage at this gauge is reported IN MLLW.
Flood levels
Official flood levels at this gauge: action stage begins at 10.5 ft; minor flooding begins at 12.0 ft; moderate flooding begins at 13.0 ft; major flooding begins at 14.0 ft.
| Action stage | 10.5 ft |
|---|---|
| Minor flooding | 12.0 ft |
| Moderate flooding | 13.0 ft |
| Major flooding | 14.0 ft |
Highest recorded crests
- 14.6 ft on Jan 13, 2024 (historic crest)
- 14.2 ft on Feb 7, 1978 (historic crest)
- 14.0 ft on Jan 9, 1978 (historic crest)
- 13.8 ft on Jan 10, 2024 (historic crest)
What the water does
National Weather Service impact statements for this gauge, in the Weather Service's own words.
| 12.0 ft | Flooding four to six inches deep occurs along the wharfs and most vulnerable side streets near the Portland Pier. Coastal flooding begins on Marginal Way and Somerset Street, especially if combined with heavy rainfall. |
|---|---|
| 12.5 ft | Water will be eight to ten inches deep along several low lying side streets and wharfs along Portland Harbor with water up to the bottom of doors in parking lots east of the Portland Peir. Water will be eight to 10 inches deep covering Marginal Way in Portland with six to eight inches of water on Somserset Street. |
| 13.0 ft | Water will reach the tailpipes of cars at businesses near the Portland Pier. At this elevation, a foot of water will also cover Granite Point Road in Biddeford |
| 13.8 ft | Water will enter and flood businesses along and near the Portland Pier. Water will be nearly two feet deep along Granite Point Road in Biddeford and Mile Stretch Road will be flooded. Roads and businesses will also flood in Wells and Kennebunkport. |
Forecast office: NWS Gray · River Forecast Center: Northeast River Forecast Center.
A NOAA tide station shares this spot: PORTLAND, with tide predictions and official flood levels.
Atlantic Coast at Portland (IN MLLW) in your pocket
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Nearby stations and gauges
- PORTLAND NOAA tide station · 0.2 mi
- Back Cove NOAA tide station · 1.4 mi
- Presumpscot River Bridge NOAA tide station · 2.1 mi
- Fore River NOAA tide station · 2.2 mi
- Peak Island NOAA tide station · 2.3 mi
- Great Diamond Island NOAA tide station · 2.5 mi