Major Flood
12 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: BAHM1). 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
11 ft
Minor Flood
9.5 ft
Action Stage
9 ft
What Floods at Each Level
13 ft
Extensive inundation of buildings and roads along the river waterfront in Washington Street including access roads to Popham Beach and Reid State Parks.
12.5 ft
Route 127 in Arrowsic south of Fisher Eddy Road begins to flood.
12 ft
Inundation of buildings occurs along Washington Street waterfront.
11.5 ft
Sirious Road in Arrowsic flooded.
11 ft
Washington Street in Bath flooded in multiple locations up to a foot deep. Spinney Mill Road in Arrowsic and Williams Road in Georgetown flooded.
10 ft
Flooding begins in Arrowsic along Route 127 near the marsh areas south of the bridge. Water encroaches on Washington Street in Bath.
9.5 ft
Minor lowland flooding begins along the Kennebec River waterfront in Bath. Parking lots, boat launch, and river park areas flood.
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
BAHM1
County
Sagadahoc, ME
Coordinates
43.8943°N, 69.8100°W
Get Flood Alerts for Bath Tide Gage (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 Bath Tide Gage (MLLW)?
The Bath Tide Gage (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 Bath Tide Gage (MLLW)?
The NWS-defined flood stage for Bath Tide Gage (MLLW) is 9.5 feet. Action stage begins at 9 feet. Moderate flooding starts at 11 feet, and major flooding at 12 feet.
How do I get alerts when this river rises?
Download StormCast free on Google Play, go to River Gauges, and add Bath Tide Gage (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 Bath Tide Gage (MLLW) gauge located?
The gauge is located in Sagadahoc County, Maine at coordinates 43.8943°N, 69.8100°W. Data is provided by the U.S. Geological Survey and the National Weather Service.
More Resources
Source & Notes
Data provided by: This link leads NERACOOS Marine Dashboard
- <head> <style type="text/css"> .style1 { background-color: #FFFF00; } </style> </head> Tide Forecasts are a total water level forecast referenced to mean lower low water. Please refer to<span class="style1"> </span><a href="http://forecast.weather.gov/product.php?site=NWS&product=CFW&issuedby=OKX"><span class="style1">Coastal Flood Advisories and Warnings</span> </a>for official water level forecasts during periods of coastal flooding. During tropical cyclones, please refer<a href="https://forecast.weather.gov/product.php?site=NWS&issuedby=OKX&product=TCV&format=CI&version=1&glossary=1"><span class="style1"> here</span></a> for additional storm surge information. Click<span class="style1"> </span> <a href="https://www.weather.gov/images/okx/coastalflood/Coastal%2520Flood%2520Threshold%2520Definitions.png"> <span class="style1">here for Flood Category definitions</span></a>.