Atlantic Coast at Provincetown Harbor (IN MLLW)
Massachusetts — Water Level & Flood Stage
Located in Barnstable County, Massachusetts on the Atlantic Coast. Live water level data from USGS, updated every 15 minutes.
Current Water Level
Gage Height
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Streamflow
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Last Reading
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This is an NWS forecast point (LID: PVHM3). Live data may be limited. View on NWS AHPS →
Flood Stages
Major Flood
15 ft
Moderate Flood
14 ft
Minor Flood
13 ft
Action Stage
11.5 ft
Flood stages defined by the National Weather Service. Gage height data from USGS Water Resources.
What Floods at Each Level
17 ft
This degree of flooding has not been seen in recent times. Life threatening flooding more than 3 feet deep isolates parts of Provincetown and Truro. Deep flooding impacts Routes 6 and 6A and much of the Provincetown Historic District. Truro could become bisected with deep flooding along Route 6 and on streets near Pamet Harbor and Little Pamet River marshes. Follow the direction of local officials and evacuate if asked to do so.
16 ft
This degree of flooding is rarely seen and is life threatening. Flooding more than 3 feet deep inundates parts of Routes 6 and 6A and cuts of access to and from Truro. Many roads in Provincetown are flooded including much of the Downtown Historic District and Provincetown Airport. In Truro, deep flooding affects areas near Pamet Harbor and Little Pamet River. Follow the instructions of local officials.
15 ft
This is a rare and life threatening flood. Deep flooding more than 3 feet deep affects much of the Downtown Historic District, Provincetown Airport, and parts of Routes 6 and 6A which includes access to and from Truro. In Truro, parts of Route 6 and 6A near East Harbor are flooded with 1 to 2 feet of water. Flooding also impacts Pamet Harbor and many nearby roads. Follow the instructions of local officials.
14 ft
Some roads are impassable with 1 to 2 feet of water. Flooding impacts parts of Commercial Street in Provincetown including some of the Historic District, Race Point Road and areas near the airport, Province Lands Road, and part of Route 6A. In Truro, flooding impacts Pamet Harbor and many nearby roads. Find alternate routes and avoid flooded roads.
13 ft
Roads remain passable. Shallow pockets of flooding less than one foot deep affect low lying areas in Provincetown, mainly near the airport and Race Point Road. In Truro, flooding up to one foot deep affects low lying areas near Pamet Harbor and along the Pamet River.
Impact statements from the National Weather Service, describing what typically happens at each water level.
7-Day Water Level Chart
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Historic Crests
| Date | Stage | Flow |
|---|---|---|
| Jan 3, 2018 | 15.38 ft | — |
| Jan 3, 2018 | 15.38 ft | — |
| Jan 13, 2024 | 14.69 ft | — |
| Jan 12, 2024 | 14.69 ft | — |
| Jan 12, 2024 | 14.69 ft | — |
About This Gauge
NWS LID
PVHM3
River
Atlantic Coast
County
Barnstable, MA
Coordinates
42.0497°N, 70.1822°W
Get Flood Alerts for Atlantic Coast
StormCast monitors this gauge and sends a push notification to your phone when the water level crosses into a new flood category — even at 3 AM.
Frequently Asked Questions
What is the current water level of Atlantic Coast at Provincetown Harbor (IN MLLW)?
The Atlantic Coast at Provincetown Harbor (IN MLLW) gauge is maintained by USGS and reports water levels every 15 minutes. Visit this page to see the latest reading updated live, or download StormCast to get push alerts when levels rise.
What is flood stage for Atlantic Coast at Provincetown Harbor (IN MLLW)?
The NWS-defined flood stage for Atlantic Coast at Provincetown Harbor (IN MLLW) is 13 feet. Action stage begins at 11.5 feet. Moderate flooding starts at 14 feet, and major flooding at 15 feet.
How do I get alerts when Atlantic Coast rises?
Download StormCast free on Google Play, go to River Gauges, and add Atlantic Coast at Provincetown Harbor (IN MLLW) to your watchlist. StormCast will send a push notification to your phone whenever the water level crosses into a new NWS flood category — even when your screen is off.
Where is the Atlantic Coast at Provincetown Harbor (IN MLLW) gauge located?
The gauge is located in Barnstable County, Massachusetts at coordinates 42.0497°N, 70.1822°W. Data is provided by the U.S. Geological Survey and the National Weather Service.
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Source & Notes
Data provided by: US Geological Survey
- Stage may be affected by ice.
- <span style="color: #ff0000;">Please refer to our <span style="background-color: #ffff00;"><a style="color: #ff0000; background-color: #ffff00;" title="Link to CFWBOX" href="https://forecast.weather.gov/product.php?site=NWS&issuedby=BOX&product=CFW&format=CI&version=1&glossary=0">Coastal Hazard Message</a></span> 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 <span style="background-color: #ffff00;"><a style="background-color: #ffff00;" title="Link to TCVBOX" href="https://forecast.weather.gov/product.php?site=NWS&issuedby=BOX&product=TCV&format=CI&version=1&glossary=1">here</a></span> for additional storm surge information.</span>
- <span style="color: #ff0000;">During a Tropical Storm or Hurricane Watch or Warning, inundation mapping provided by the <span style="background-color: #ffff00;"><a style="color: #ff0000; background-color: #ffff00;" href="https://www.nhc.noaa.gov">National Hurricane Center</a></span> (go to the web site and select the storm of interest) reflects a reasonable worst case scenario. The forecast above is the total water forecast that is most likely to occur.</span>