Major Flood
15.5 ft
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: GHBM3). Live data may be limited. View on NWS AHPS →
FLOOD STAGES
Know the flood categories.
Flood stages defined by the National Weather Service. Gage height data from USGS Water Resources.
Moderate Flood
13.5 ft
Minor Flood
11.5 ft
Action Stage
11 ft
What Floods at Each Level
14 ft
14.0: Widespread flooding of coastal areas along the south shore from Cohasset to Plymouth is expected. Large swells breaking on the coastline may produce structural damage to roads and homes near the time of high tide. Evacuations and road closures may be required. Significant beach erosion is also expected.
13.5 ft
Significant flooding of coastal areas along the South Shore from Cohasset to Plymouth is expected. Large swells breaking on the coastline may damage some immediate coastal roads and homes near the time of high tide. Evacuations and road closures may be required. Significant beach erosion is also likely.
13 ft
Flooding is expected in low lying areas of Cohasset, Scituate and Marshfield. Some localized evaucations may be required as coastal roads become inundated. Large waves will produce beach erosion.
12.5 ft
Minor flooding and beach erosion is expected across low lying sections of Cohasset, Scituate and Marshfield. Immediate coastal roads may be impassable for a time nearest the time of high tide.
Impact statements from the National Weather Service, describing what typically happens at each water level.
7-Day Water Level Chart
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About This Gauge
NWS LID
GHBM3
County
Plymouth, MA
Coordinates
42.0824°N, 70.6463°W
Get Flood Alerts for Green Harbor, Marshfield (In MLLW)
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 Green Harbor, Marshfield (In MLLW)?
The Green Harbor, Marshfield (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 Green Harbor, Marshfield (In MLLW)?
The NWS-defined flood stage for Green Harbor, Marshfield (In MLLW) is 11.5 feet. Action stage begins at 11 feet. Moderate flooding starts at 13.5 feet, and major flooding at 15.5 feet.
How do I get alerts when this river rises?
Download StormCast free on Google Play, go to River Gauges, and add Green Harbor, Marshfield (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.
Where is the Green Harbor, Marshfield (In MLLW) gauge located?
The gauge is located in Plymouth County, Massachusetts at coordinates 42.0824°N, 70.6463°W. Data is provided by the U.S. Geological Survey and the National Weather Service.
More Resources
Source & Notes
Data provided by: Click here