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Over 200 USGS real-time streamgages used to support NWS river forecasts and warnings are at risk of being discontinued. Click here for more information from the USGS...


NOTE: Gauge readings may be delayed or temporarily unavailable due to satellite communication issues.
Weather Forecast Office Boston, MA Northeast River Forecast Center
Hydrograph River at a Glance Download Weekly Chance of
Exceeding Levels		 Chance of Exceeding Levels
During Entire Period
Squannacook River at West Groton Stage (ft)Flow (kcfs)Observed: 1.92 ft at 2:15PM May 20, 2013Observed: 1.92 ft at 2:30PM May 20, 2013Observed: 1.92 ft at 2:45PM May 20, 2013Observed: 1.92 ft at 3:00PM May 20, 2013Observed: 1.92 ft at 3:15PM May 20, 2013Observed: 1.92 ft at 3:30PM May 20, 2013Observed: 1.92 ft at 3:45PM May 20, 2013Observed: 1.92 ft at 4:00PM May 20, 2013Observed: 1.92 ft at 4:15PM May 20, 2013Observed: 1.92 ft at 4:30PM May 20, 2013Observed: 1.92 ft at 4:45PM May 20, 2013Observed: 1.92 ft at 5:00PM May 20, 2013Observed: 1.92 ft at 5:15PM May 20, 2013Observed: 1.92 ft at 5:30PM May 20, 2013Observed: 1.92 ft at 5:45PM May 20, 2013Observed: 1.92 ft at 6:00PM May 20, 2013Observed: 1.92 ft at 6:15PM May 20, 2013Observed: 1.92 ft at 6:30PM May 20, 2013Observed: 1.92 ft at 6:45PM May 20, 2013Observed: 1.92 ft at 7:00PM May 20, 2013Observed: 1.92 ft at 7:15PM May 20, 2013Observed: 1.92 ft at 7:30PM May 20, 2013Observed: 1.92 ft at 7:45PM May 20, 2013Observed: 1.92 ft at 8:00PM May 20, 2013Observed: 1.92 ft at 8:15PM May 20, 2013Observed: 1.92 ft at 8:30PM May 20, 2013Observed: 1.92 ft at 8:45PM May 20, 2013Observed: 1.92 ft at 9:00PM May 20, 2013Observed: 1.92 ft at 9:15PM May 20, 2013Observed: 1.92 ft at 9:30PM May 20, 2013Observed: 1.92 ft at 9:45PM May 20, 2013Observed: 1.92 ft at 10:00PM May 20, 2013Observed: 1.92 ft at 10:15PM May 20, 2013Observed: 1.92 ft at 10:30PM May 20, 2013Observed: 1.92 ft at 10:45PM May 20, 2013Observed: 1.92 ft at 11:00PM May 20, 2013Observed: 1.92 ft at 11:15PM May 20, 2013Observed: 1.92 ft at 11:30PM May 20, 2013Observed: 1.92 ft at 11:45PM May 20, 2013Observed: 1.92 ft at 12:00AM May 21, 2013Observed: 1.92 ft at 12:15AM May 21, 2013Observed: 1.92 ft at 12:30AM May 21, 2013Observed: 1.92 ft at 12:45AM May 21, 2013Observed: 1.92 ft at 1:00AM May 21, 2013Observed: 1.92 ft at 1:15AM May 21, 2013Observed: 1.92 ft at 1:30AM May 21, 2013Observed: 1.92 ft at 1:45AM May 21, 2013Observed: 1.93 ft at 2:00AM May 21, 2013Observed: 1.93 ft at 2:15AM May 21, 2013Observed: 1.94 ft at 2:30AM May 21, 2013Observed: 1.94 ft at 2:45AM May 21, 2013Observed: 1.95 ft at 3:00AM May 21, 2013Observed: 1.95 ft at 3:15AM May 21, 2013Observed: 1.96 ft at 3:30AM May 21, 2013Observed: 1.96 ft at 3:45AM May 21, 2013Observed: 1.97 ft at 4:00AM May 21, 2013Observed: 1.98 ft at 4:15AM May 21, 2013Observed: 1.98 ft at 4:30AM May 21, 2013Observed: 1.99 ft at 4:45AM May 21, 2013Observed: 2 ft at 5:00AM May 21, 2013Observed: 2 ft at 5:15AM May 21, 2013Observed: 2.01 ft at 5:30AM May 21, 2013Observed: 2.02 ft at 5:45AM May 21, 2013Observed: 2.02 ft at 6:00AM May 21, 2013Observed: 2.02 ft at 6:15AM May 21, 2013Observed: 2.03 ft at 6:30AM May 21, 2013Observed: 2.04 ft at 6:45AM May 21, 2013Observed: 2.04 ft at 7:00AM May 21, 2013Observed: 2.04 ft at 7:15AM May 21, 2013Observed: 2.04 ft at 7:30AM May 21, 2013Observed: 2.04 ft at 7:45AM May 21, 2013Observed: 2.05 ft at 8:00AM May 21, 2013Observed: 2.05 ft at 8:15AM May 21, 2013Observed: 2.05 ft at 8:30AM May 21, 2013Observed: 2.05 ft at 8:45AM May 21, 2013Observed: 2.05 ft at 9:00AM May 21, 2013Observed: 2.05 ft at 9:15AM May 21, 2013Observed: 2.05 ft at 9:30AM May 21, 2013Observed: 2.05 ft at 9:45AM May 21, 2013Observed: 2.05 ft at 10:00AM May 21, 2013Observed: 2.05 ft at 10:15AM May 21, 2013Observed: 2.05 ft at 10:30AM May 21, 2013Observed: 2.05 ft at 10:45AM May 21, 2013Observed: 2.05 ft at 11:00AM May 21, 2013Observed: 2.05 ft at 11:15AM May 21, 2013Observed: 2.05 ft at 11:30AM May 21, 2013Observed: 2.05 ft at 11:45AM May 21, 2013Observed: 2.05 ft at 12:00PM May 21, 2013Observed: 2.04 ft at 12:15PM May 21, 2013Observed: 2.04 ft at 12:30PM May 21, 2013Observed: 2.04 ft at 12:45PM May 21, 2013Observed: 2.04 ft at 1:00PM May 21, 2013Observed: 2.04 ft at 1:15PM May 21, 2013Observed: 2.04 ft at 1:30PM May 21, 2013Observed: 2.04 ft at 1:45PM May 21, 2013Observed: 2.04 ft at 2:00PM May 21, 2013Observed: 2.04 ft at 2:15PM May 21, 2013Observed: 2.04 ft at 2:30PM May 21, 2013Observed: 2.04 ft at 2:45PM May 21, 2013Observed: 2.04 ft at 3:00PM May 21, 2013Observed: 2.04 ft at 3:15PM May 21, 2013Observed: 2.04 ft at 3:30PM May 21, 2013Observed: 2.04 ft at 3:45PM May 21, 2013Observed: 2.04 ft at 4:00PM May 21, 2013Observed: 2.03 ft at 4:15PM May 21, 2013Observed: 2.03 ft at 4:30PM May 21, 2013Observed: 2.03 ft at 4:45PM May 21, 2013Observed: 2.02 ft at 5:00PM May 21, 2013Observed: 2.02 ft at 5:15PM May 21, 2013Observed: 2.02 ft at 5:30PM May 21, 2013Observed: 2.02 ft at 5:45PM May 21, 2013Observed: 2.02 ft at 6:00PM May 21, 2013Observed: 2.01 ft at 6:15PM May 21, 2013Observed: 2.01 ft at 6:30PM May 21, 2013Observed: 2.01 ft at 6:45PM May 21, 2013Observed: 2.01 ft at 7:00PM May 21, 2013Observed: 2 ft at 7:15PM May 21, 2013Observed: 2 ft at 7:30PM May 21, 2013Observed: 2 ft at 7:45PM May 21, 2013Observed: 2 ft at 8:00PM May 21, 2013Observed: 2 ft at 8:15PM May 21, 2013Observed: 2 ft at 8:30PM May 21, 2013Observed: 1.99 ft at 8:45PM May 21, 2013Observed: 1.99 ft at 9:00PM May 21, 2013Observed: 1.99 ft at 9:15PM May 21, 2013Observed: 1.99 ft at 9:30PM May 21, 2013Observed: 1.99 ft at 9:45PM May 21, 2013Observed: 1.98 ft at 10:00PM May 21, 2013Observed: 1.98 ft at 10:15PM May 21, 2013Observed: 1.98 ft at 10:30PM May 21, 2013Observed: 1.98 ft at 10:45PM May 21, 2013Observed: 1.98 ft at 11:00PM May 21, 2013Observed: 1.98 ft at 11:15PM May 21, 2013Observed: 1.98 ft at 11:30PM May 21, 2013Observed: 1.98 ft at 11:45PM May 21, 2013Observed: 1.98 ft at 12:00AM May 22, 2013Observed: 1.98 ft at 12:15AM May 22, 2013Observed: 1.98 ft at 12:30AM May 22, 2013Observed: 1.98 ft at 12:45AM May 22, 2013Observed: 1.99 ft at 1:00AM May 22, 2013Observed: 2 ft at 1:15AM May 22, 2013Observed: 2 ft at 1:30AM May 22, 2013Observed: 2 ft at 1:45AM May 22, 2013Observed: 2.01 ft at 2:00AM May 22, 2013Observed: 2.02 ft at 2:15AM May 22, 2013Observed: 2.03 ft at 2:30AM May 22, 2013Observed: 2.04 ft at 2:45AM May 22, 2013Observed: 2.04 ft at 3:00AM May 22, 2013Observed: 2.05 ft at 3:15AM May 22, 2013Observed: 2.06 ft at 3:30AM May 22, 2013Observed: 2.07 ft at 3:45AM May 22, 2013Observed: 2.08 ft at 4:00AM May 22, 2013Observed: 2.08 ft at 4:15AM May 22, 2013Observed: 2.1 ft at 4:30AM May 22, 2013Observed: 2.12 ft at 4:45AM May 22, 2013Observed: 2.14 ft at 5:00AM May 22, 2013Observed: 2.24 ft at 10:15AM May 22, 2013Observed: 2.24 ft at 10:30AM May 22, 2013Observed: 2.24 ft at 10:45AM May 22, 2013Observed: 2.24 ft at 11:00AM May 22, 2013Observed: 2.25 ft at 11:15AM May 22, 2013Observed: 2.25 ft at 11:30AM May 22, 2013Observed: 2.25 ft at 11:45AM May 22, 2013Observed: 2.26 ft at 12:00PM May 22, 2013Observed: 2.26 ft at 12:15PM May 22, 2013Observed: 2.26 ft at 12:30PM May 22, 2013Observed: 2.26 ft at 12:45PM May 22, 2013Observed: 2.27 ft at 1:00PM May 22, 2013Observed: 2.27 ft at 1:15PM May 22, 2013Observed: 2.28 ft at 1:30PM May 22, 2013Observed: 2.28 ft at 1:45PM May 22, 2013Observed: 2.28 ft at 2:00PM May 22, 2013Observed: 2.29 ft at 2:15PM May 22, 2013Observed: 2.29 ft at 2:30PM May 22, 2013Observed: 2.3 ft at 2:45PM May 22, 2013Observed: 2.31 ft at 3:00PM May 22, 2013Observed: 2.32 ft at 3:15PM May 22, 2013Observed: 2.32 ft at 3:30PM May 22, 2013Observed: 2.32 ft at 3:45PM May 22, 2013Observed: 2.33 ft at 4:00PM May 22, 2013Observed: 2.34 ft at 4:15PM May 22, 2013Observed: 2.35 ft at 4:30PM May 22, 2013Observed: 2.36 ft at 4:45PM May 22, 2013Observed: 2.36 ft at 5:00PM May 22, 2013Observed: 2.37 ft at 5:15PM May 22, 2013Observed: 2.38 ft at 5:30PM May 22, 2013Observed: 2.39 ft at 5:45PM May 22, 2013Observed: 2.4 ft at 6:00PM May 22, 2013Observed: 2.4 ft at 6:15PM May 22, 2013Observed: 2.41 ft at 6:30PM May 22, 2013Observed: 2.42 ft at 6:45PM May 22, 2013Observed: 2.43 ft at 7:00PM May 22, 2013Observed: 2.44 ft at 7:15PM May 22, 2013Observed: 2.44 ft at 7:30PM May 22, 2013Observed: 2.45 ft at 7:45PM May 22, 2013Observed: 2.46 ft at 8:00PM May 22, 2013Observed: 2.46 ft at 8:15PM May 22, 2013Observed: 2.47 ft at 8:30PM May 22, 2013Observed: 2.48 ft at 8:45PM May 22, 2013Observed: 2.48 ft at 9:00PM May 22, 2013Observed: 2.48 ft at 9:15PM May 22, 2013Observed: 2.49 ft at 9:30PM May 22, 2013Observed: 2.5 ft at 9:45PM May 22, 2013Observed: 2.5 ft at 10:00PM May 22, 2013Observed: 2.5 ft at 10:15PM May 22, 2013Observed: 2.51 ft at 10:30PM May 22, 2013Observed: 2.51 ft at 10:45PM May 22, 2013Observed: 2.52 ft at 11:00PM May 22, 2013Observed: 2.52 ft at 11:15PM May 22, 2013Observed: 2.52 ft at 11:30PM May 22, 2013Observed: 2.52 ft at 11:45PM May 22, 2013Observed: 2.52 ft at 12:00AM May 23, 2013Observed: 2.52 ft at 12:15AM May 23, 2013Observed: 2.52 ft at 12:30AM May 23, 2013Observed: 2.52 ft at 12:45AM May 23, 2013Observed: 2.52 ft at 1:00AM May 23, 2013Observed: 2.53 ft at 2:15AM May 23, 2013Observed: 2.53 ft at 2:30AM May 23, 2013Observed: 2.53 ft at 2:45AM May 23, 2013Observed: 2.53 ft at 3:00AM May 23, 2013Observed: 2.53 ft at 3:15AM May 23, 2013Observed: 2.53 ft at 3:30AM May 23, 2013Observed: 2.53 ft at 3:45AM May 23, 2013Observed: 2.53 ft at 4:00AM May 23, 2013Observed: 2.53 ft at 4:15AM May 23, 2013Observed: 2.53 ft at 4:30AM May 23, 2013Observed: 2.53 ft at 4:45AM May 23, 2013Observed: 2.53 ft at 5:00AM May 23, 2013Observed: 2.53 ft at 5:15AM May 23, 2013Observed: 2.53 ft at 5:30AM May 23, 2013Observed: 2.53 ft at 5:45AM May 23, 2013Observed: 2.53 ft at 6:00AM May 23, 2013Observed: 2.53 ft at 6:15AM May 23, 2013Observed: 2.53 ft at 6:30AM May 23, 2013Observed: 2.53 ft at 6:45AM May 23, 2013Observed: 2.53 ft at 7:00AM May 23, 2013Observed: 2.53 ft at 7:15AM May 23, 2013Observed: 2.53 ft at 7:30AM May 23, 2013Observed: 2.53 ft at 7:45AM May 23, 2013Observed: 2.53 ft at 8:00AM May 23, 2013Observed: 2.53 ft at 8:15AM May 23, 2013Observed: 2.53 ft at 8:30AM May 23, 2013Observed: 2.53 ft at 8:45AM May 23, 2013Observed: 2.53 ft at 9:00AM May 23, 2013Observed: 2.53 ft at 9:15AM May 23, 2013Observed: 2.53 ft at 9:30AM May 23, 2013Observed: 2.53 ft at 9:45AM May 23, 2013Observed: 2.53 ft at 10:00AM May 23, 2013Observed: 2.53 ft at 10:15AM May 23, 2013Observed: 2.53 ft at 10:30AM May 23, 2013Observed: 2.53 ft at 10:45AM May 23, 2013Observed: 2.53 ft at 11:00AM May 23, 2013Observed: 2.54 ft at 11:15AM May 23, 2013Observed: 2.54 ft at 11:30AM May 23, 2013Observed: 2.54 ft at 11:45AM May 23, 2013Observed: 2.54 ft at 12:00PM May 23, 2013Observed: 2.55 ft at 12:15PM May 23, 2013Highest Observation: 2.56 ft at 12:30PM May 23, 2013Highest Observation: 2.56 ft at 12:45PM May 23, 2013Highest Observation: 2.56 ft at 1:00PM May 23, 2013Forecast: 2.4 ft 8:00PM May 23, 2013Forecast: 2.8 ft 2:00AM May 24, 2013Forecast: 3.2 ft 8:00AM May 24, 2013Forecast: 3.5 ft 2:00PM May 24, 2013Forecast: 3.7 ft 8:00PM May 24, 2013Forecast: 3.9 ft 2:00AM May 25, 2013Forecast: 4 ft 8:00AM May 25, 2013Highest Forecast: 4.1 ft 2:00PM May 25, 2013Forecast: 4 ft 8:00PM May 25, 2013Forecast: 3.9 ft 2:00AM May 26, 2013Forecast: 3.7 ft 8:00AM May 26, 2013USGS--Water Resources of the United StatesWGTM3(plotting HGIRG) Graph Created (2:11PM May 23, 2013)ObservedForecast (issued 11:21AM May 23)Latest observed value: 2.56 ft at 1:00 PM EDT 23-May-2013. Flood Stage is 7 ft
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About this graph
Tabular Data
XML Data
RSS Files
Datum: Not Available
Metadata
NOTE: Forecasts for the Squannacook River at West Groton are issued routinely year-round.
Return to Area Map
Flood Categories (in feet)
Major Flood Stage:9.5
Moderate Flood Stage:8.5
Flood Stage:7
Action Stage:6

Historical Crests
(1) 8.50 ft on 04/17/2007
(2) 8.16 ft on 04/06/1987
(3) 8.07 ft on 04/02/2004
(4) 8.04 ft on 10/16/1955
(5) 8.03 ft on 03/15/2010
Show More Historical Crests

Low Water Records
Legend
Gauge Location
Disclaimer
Latitude/Longitude Disclaimer: The gauge location shown in the above map is the approximate location based on the latitude/longitude coordinates provided to the NWS by the gauge owner.
Flood Impacts & Photos Collapse
9 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 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 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 MINOR FLOODING AFFECTS THE LOWEST LYING SECTIONS OF TOWNSEND...INCLUDING THE FARMLAND ALONG TURNPIKE AND BARKER HILL ROADS.
About This Location Collapse

Latitude: 42.634167° N, Longitude: 71.658333° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame		 Gauge Height Flood Stage Uses
NWS stage 0 ft 7 ft Interpreting hydrographs and NWS watch, warnings, and forecasts, and inundation maps
Vertical Datum Elevation
(gauge height = 0)		 Elevation
(gauge height = flood stage)		 Elevation information source
NAVD88 Not Available Not Available Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps
NGVD 29 Not Available Not Available Older USGS topographic maps, NGVD29 benchmarks
MSL Not Available Not Available Older USGS topographic maps, MSL benchmarks
Other NULL NULL  

Other Data Sources:
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The National Weather Service prepares its forecasts and other services in collaboration with agencies like the US Geological Survey, US Bureau of Reclamation, US Army Corps of Engineers, Natural Resource Conservation Service, National Park Service, ALERT Users Group, Bureau of Indian Affairs, and many state and local emergency managers across the country. For details, please click here.
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Taunton, MA 02780
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