Major Flood
9.5 ft
Current Water Level
Gage Height
Loading...
Streamflow
Loading...
Last Reading
Loading...
FLOOD STAGES
Know the flood categories.
Flood stages defined by the National Weather Service. Gage height data from USGS Water Resources.
Moderate Flood
8.5 ft
Minor Flood
7 ft
Action Stage
6 ft
What Floods at Each Level
9 ft
This is a serious flood event. Widespread flooding is expected along the river through Townsend, Shirley and Groton. Small brooks and tributaries trying to flow into the Squannacook will experience flooding as well. Some road closures may be needed. If asked to evacuate, do so immediately. Follow the directions of emergency management officials.
8.5 ft
Flooding will affect portions of Townsend and Groton. Areas along Turnpike and Barker Hill Roads and along Squannacook Terrace should expect flooding. In addition, flooding also occurs on several access roads to the Townsend State Forest.
8 ft
Minor flooding is expected in lower lying sections of Townsend including the farming areas along Turnpike and Barker Hill roads. Flooding may also spread into low lying areas along Squannacook Terrace.
7.5 ft
Minor flooding affects the lowest lying sections of Townsend, including the farmland along Turnpike and Barker Hill roads.
Impact statements from the National Weather Service, describing what typically happens at each water level.
7-Day Water Level Chart
Loading chart data...
Historic Crests
| Date | Stage | Flow |
|---|---|---|
| Apr 16, 2007 | 8.5 ft | 4,820 cfs |
| Apr 5, 1987 | 8.16 ft | 4,220 cfs |
| Apr 2, 2004 | 8.07 ft | 4,060 cfs |
About This Gauge
USGS Site
NWS LID
WGTM3
River
Squannacook River
County
Middlesex, MA
Coordinates
42.6343°N, 71.6578°W
Get Flood Alerts for Squannacook River
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 Squannacook River at West Groton?
The Squannacook River at West Groton gauge is maintained by USGS (site 01096000) 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 Squannacook River at West Groton?
The NWS-defined flood stage for Squannacook River at West Groton is 7 feet. Action stage begins at 6 feet. Moderate flooding starts at 8.5 feet, and major flooding at 9.5 feet.
How do I get alerts when Squannacook River rises?
Download StormCast free on Google Play, go to River Gauges, and add Squannacook River at West Groton 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 Squannacook River at West Groton gauge located?
The gauge is located in Middlesex County, Massachusetts at coordinates 42.6343°N, 71.6578°W. USGS site number: 01096000. Data is provided by the U.S. Geological Survey and the National Weather Service.
More Resources
Source & Notes
Data provided by: US Geological Survey, Observations courtesy of U.S. Geological Survey
- Gauge reading may be affected by ice. Forecast flows are unadjusted for ice.