Skip Navigation Link weather.gov  
NOAA logo - Click to go to the NOAA homepage National Weather Service NWS logo - Click to go to the NWS homepage
Advanced Hydrologic Prediction Service
Image background of Navigation bar Left
Bookmark and Share Navigation Bar End Cap

  
 
Hydrograph River at a Glance Download
Squannacook River at West Groton Stage (ft)Flow (kcfs)Observed: 1.3 ft at 10:30PM Sep 20, 2014Observed: 1.3 ft at 10:45PM Sep 20, 2014Observed: 1.3 ft at 11:00PM Sep 20, 2014Observed: 1.3 ft at 11:15PM Sep 20, 2014Observed: 1.3 ft at 11:30PM Sep 20, 2014Observed: 1.3 ft at 11:45PM Sep 20, 2014Observed: 1.3 ft at 12:00AM Sep 21, 2014Observed: 1.3 ft at 12:15AM Sep 21, 2014Observed: 1.3 ft at 12:30AM Sep 21, 2014Observed: 1.3 ft at 12:45AM Sep 21, 2014Observed: 1.3 ft at 1:00AM Sep 21, 2014Observed: 1.3 ft at 1:15AM Sep 21, 2014Observed: 1.3 ft at 1:30AM Sep 21, 2014Observed: 1.3 ft at 1:45AM Sep 21, 2014Observed: 1.3 ft at 2:00AM Sep 21, 2014Observed: 1.3 ft at 2:15AM Sep 21, 2014Observed: 1.3 ft at 2:30AM Sep 21, 2014Observed: 1.3 ft at 2:45AM Sep 21, 2014Observed: 1.3 ft at 3:00AM Sep 21, 2014Observed: 1.3 ft at 3:15AM Sep 21, 2014Observed: 1.3 ft at 3:30AM Sep 21, 2014Observed: 1.3 ft at 3:45AM Sep 21, 2014Observed: 1.3 ft at 4:00AM Sep 21, 2014Observed: 1.3 ft at 4:15AM Sep 21, 2014Observed: 1.3 ft at 4:30AM Sep 21, 2014Observed: 1.3 ft at 4:45AM Sep 21, 2014Observed: 1.3 ft at 5:00AM Sep 21, 2014Observed: 1.3 ft at 5:15AM Sep 21, 2014Observed: 1.3 ft at 5:30AM Sep 21, 2014Observed: 1.3 ft at 5:45AM Sep 21, 2014Observed: 1.32 ft at 6:00AM Sep 21, 2014Observed: 1.34 ft at 6:15AM Sep 21, 2014Observed: 1.37 ft at 6:30AM Sep 21, 2014Observed: 1.39 ft at 6:45AM Sep 21, 2014Observed: 1.39 ft at 7:00AM Sep 21, 2014Observed: 1.39 ft at 7:15AM Sep 21, 2014Observed: 1.39 ft at 7:30AM Sep 21, 2014Observed: 1.4 ft at 7:45AM Sep 21, 2014Observed: 1.4 ft at 8:00AM Sep 21, 2014Observed: 1.41 ft at 8:15AM Sep 21, 2014Observed: 1.42 ft at 8:30AM Sep 21, 2014Observed: 1.43 ft at 8:45AM Sep 21, 2014Observed: 1.45 ft at 9:00AM Sep 21, 2014Observed: 1.46 ft at 9:15AM Sep 21, 2014Observed: 1.48 ft at 9:30AM Sep 21, 2014Observed: 1.49 ft at 9:45AM Sep 21, 2014Observed: 1.5 ft at 10:00AM Sep 21, 2014Observed: 1.51 ft at 10:15AM Sep 21, 2014Observed: 1.52 ft at 10:30AM Sep 21, 2014Observed: 1.52 ft at 10:45AM Sep 21, 2014Observed: 1.53 ft at 11:00AM Sep 21, 2014Observed: 1.53 ft at 11:15AM Sep 21, 2014Observed: 1.53 ft at 11:30AM Sep 21, 2014Observed: 1.53 ft at 11:45AM Sep 21, 2014Observed: 1.53 ft at 12:00PM Sep 21, 2014Observed: 1.53 ft at 12:15PM Sep 21, 2014Observed: 1.53 ft at 12:30PM Sep 21, 2014Observed: 1.53 ft at 12:45PM Sep 21, 2014Observed: 1.53 ft at 1:00PM Sep 21, 2014Observed: 1.53 ft at 1:15PM Sep 21, 2014Observed: 1.52 ft at 1:30PM Sep 21, 2014Observed: 1.52 ft at 1:45PM Sep 21, 2014Observed: 1.52 ft at 2:00PM Sep 21, 2014Observed: 1.52 ft at 2:15PM Sep 21, 2014Observed: 1.52 ft at 2:30PM Sep 21, 2014Observed: 1.52 ft at 2:45PM Sep 21, 2014Observed: 1.52 ft at 3:00PM Sep 21, 2014Observed: 1.52 ft at 3:15PM Sep 21, 2014Observed: 1.52 ft at 3:30PM Sep 21, 2014Observed: 1.52 ft at 3:45PM Sep 21, 2014Observed: 1.52 ft at 4:00PM Sep 21, 2014Observed: 1.52 ft at 4:15PM Sep 21, 2014Observed: 1.52 ft at 4:30PM Sep 21, 2014Observed: 1.52 ft at 4:45PM Sep 21, 2014Observed: 1.51 ft at 5:00PM Sep 21, 2014Observed: 1.51 ft at 5:15PM Sep 21, 2014Observed: 1.51 ft at 5:30PM Sep 21, 2014Observed: 1.51 ft at 5:45PM Sep 21, 2014Observed: 1.51 ft at 6:00PM Sep 21, 2014Observed: 1.51 ft at 6:15PM Sep 21, 2014Observed: 1.51 ft at 6:30PM Sep 21, 2014Observed: 1.51 ft at 6:45PM Sep 21, 2014Observed: 1.51 ft at 7:00PM Sep 21, 2014Observed: 1.51 ft at 7:15PM Sep 21, 2014Observed: 1.51 ft at 7:30PM Sep 21, 2014Observed: 1.51 ft at 7:45PM Sep 21, 2014Observed: 1.51 ft at 8:00PM Sep 21, 2014Observed: 1.51 ft at 8:15PM Sep 21, 2014Observed: 1.51 ft at 8:30PM Sep 21, 2014Observed: 1.51 ft at 8:45PM Sep 21, 2014Observed: 1.51 ft at 9:00PM Sep 21, 2014Observed: 1.5 ft at 9:15PM Sep 21, 2014Observed: 1.5 ft at 9:30PM Sep 21, 2014Observed: 1.5 ft at 9:45PM Sep 21, 2014Observed: 1.5 ft at 10:00PM Sep 21, 2014Observed: 1.5 ft at 10:15PM Sep 21, 2014Observed: 1.5 ft at 10:30PM Sep 21, 2014Observed: 1.5 ft at 10:45PM Sep 21, 2014Observed: 1.5 ft at 11:00PM Sep 21, 2014Observed: 1.5 ft at 11:15PM Sep 21, 2014Observed: 1.5 ft at 11:30PM Sep 21, 2014Observed: 1.5 ft at 11:45PM Sep 21, 2014Observed: 1.51 ft at 12:00AM Sep 22, 2014Observed: 1.51 ft at 12:15AM Sep 22, 2014Observed: 1.51 ft at 12:30AM Sep 22, 2014Observed: 1.51 ft at 12:45AM Sep 22, 2014Observed: 1.51 ft at 1:00AM Sep 22, 2014Observed: 1.51 ft at 1:15AM Sep 22, 2014Observed: 1.51 ft at 1:30AM Sep 22, 2014Observed: 1.51 ft at 1:45AM Sep 22, 2014Observed: 1.51 ft at 2:00AM Sep 22, 2014Observed: 1.51 ft at 2:15AM Sep 22, 2014Observed: 1.51 ft at 2:30AM Sep 22, 2014Observed: 1.51 ft at 2:45AM Sep 22, 2014Observed: 1.51 ft at 3:00AM Sep 22, 2014Observed: 1.52 ft at 3:15AM Sep 22, 2014Observed: 1.52 ft at 3:30AM Sep 22, 2014Observed: 1.52 ft at 3:45AM Sep 22, 2014Observed: 1.52 ft at 4:00AM Sep 22, 2014Observed: 1.52 ft at 4:15AM Sep 22, 2014Observed: 1.52 ft at 4:30AM Sep 22, 2014Observed: 1.52 ft at 4:45AM Sep 22, 2014Observed: 1.53 ft at 5:00AM Sep 22, 2014Observed: 1.53 ft at 5:15AM Sep 22, 2014Observed: 1.53 ft at 5:30AM Sep 22, 2014Observed: 1.53 ft at 5:45AM Sep 22, 2014Observed: 1.53 ft at 6:00AM Sep 22, 2014Observed: 1.53 ft at 6:15AM Sep 22, 2014Observed: 1.53 ft at 6:30AM Sep 22, 2014Observed: 1.53 ft at 6:45AM Sep 22, 2014Observed: 1.53 ft at 7:00AM Sep 22, 2014Observed: 1.53 ft at 7:15AM Sep 22, 2014Observed: 1.53 ft at 7:30AM Sep 22, 2014Observed: 1.53 ft at 7:45AM Sep 22, 2014Observed: 1.53 ft at 8:00AM Sep 22, 2014Observed: 1.53 ft at 8:15AM Sep 22, 2014Observed: 1.53 ft at 8:30AM Sep 22, 2014Observed: 1.53 ft at 8:45AM Sep 22, 2014Observed: 1.54 ft at 9:00AM Sep 22, 2014Observed: 1.54 ft at 9:15AM Sep 22, 2014Observed: 1.54 ft at 9:30AM Sep 22, 2014Observed: 1.54 ft at 9:45AM Sep 22, 2014Observed: 1.54 ft at 10:00AM Sep 22, 2014Observed: 1.54 ft at 10:15AM Sep 22, 2014Observed: 1.54 ft at 10:30AM Sep 22, 2014Observed: 1.54 ft at 10:45AM Sep 22, 2014Observed: 1.54 ft at 11:00AM Sep 22, 2014Observed: 1.54 ft at 11:15AM Sep 22, 2014Observed: 1.54 ft at 11:30AM Sep 22, 2014Observed: 1.54 ft at 11:45AM Sep 22, 2014Highest Observation: 1.55 ft at 12:00PM Sep 22, 2014Highest Observation: 1.55 ft at 12:15PM Sep 22, 2014Highest Observation: 1.55 ft at 12:30PM Sep 22, 2014Highest Observation: 1.55 ft at 12:45PM Sep 22, 2014Highest Observation: 1.55 ft at 1:00PM Sep 22, 2014Highest Observation: 1.55 ft at 1:15PM Sep 22, 2014Highest Observation: 1.55 ft at 1:30PM Sep 22, 2014Highest Observation: 1.55 ft at 1:45PM Sep 22, 2014Highest Observation: 1.55 ft at 2:00PM Sep 22, 2014Highest Observation: 1.55 ft at 2:15PM Sep 22, 2014Highest Observation: 1.55 ft at 2:30PM Sep 22, 2014Highest Observation: 1.55 ft at 2:45PM Sep 22, 2014Highest Observation: 1.55 ft at 3:00PM Sep 22, 2014Highest Observation: 1.55 ft at 3:15PM Sep 22, 2014Highest Observation: 1.55 ft at 3:30PM Sep 22, 2014Highest Observation: 1.55 ft at 3:45PM Sep 22, 2014Highest Observation: 1.55 ft at 4:00PM Sep 22, 2014Highest Observation: 1.55 ft at 4:15PM Sep 22, 2014Observed: 1.54 ft at 4:30PM Sep 22, 2014Observed: 1.54 ft at 4:45PM Sep 22, 2014Observed: 1.54 ft at 5:00PM Sep 22, 2014Observed: 1.54 ft at 5:15PM Sep 22, 2014Observed: 1.54 ft at 5:30PM Sep 22, 2014Observed: 1.54 ft at 5:45PM Sep 22, 2014Observed: 1.54 ft at 6:00PM Sep 22, 2014Observed: 1.54 ft at 6:15PM Sep 22, 2014Observed: 1.54 ft at 6:30PM Sep 22, 2014Observed: 1.54 ft at 6:45PM Sep 22, 2014Observed: 1.54 ft at 7:00PM Sep 22, 2014Observed: 1.54 ft at 7:15PM Sep 22, 2014Observed: 1.53 ft at 7:30PM Sep 22, 2014Observed: 1.53 ft at 7:45PM Sep 22, 2014Observed: 1.53 ft at 8:00PM Sep 22, 2014Observed: 1.53 ft at 8:15PM Sep 22, 2014Observed: 1.52 ft at 8:30PM Sep 22, 2014Observed: 1.52 ft at 8:45PM Sep 22, 2014Observed: 1.52 ft at 9:00PM Sep 22, 2014Observed: 1.52 ft at 9:15PM Sep 22, 2014Observed: 1.52 ft at 9:30PM Sep 22, 2014Observed: 1.51 ft at 9:45PM Sep 22, 2014Observed: 1.51 ft at 10:00PM Sep 22, 2014Observed: 1.51 ft at 10:15PM Sep 22, 2014Observed: 1.51 ft at 10:30PM Sep 22, 2014Observed: 1.51 ft at 10:45PM Sep 22, 2014Observed: 1.51 ft at 11:00PM Sep 22, 2014Observed: 1.5 ft at 11:15PM Sep 22, 2014Observed: 1.5 ft at 11:30PM Sep 22, 2014Observed: 1.5 ft at 11:45PM Sep 22, 2014Observed: 1.5 ft at 12:00AM Sep 23, 2014Observed: 1.5 ft at 12:15AM Sep 23, 2014Observed: 1.5 ft at 12:30AM Sep 23, 2014Observed: 1.5 ft at 12:45AM Sep 23, 2014Observed: 1.5 ft at 1:00AM Sep 23, 2014Observed: 1.5 ft at 1:15AM Sep 23, 2014Observed: 1.5 ft at 1:30AM Sep 23, 2014Observed: 1.5 ft at 1:45AM Sep 23, 2014Observed: 1.5 ft at 2:00AM Sep 23, 2014Observed: 1.5 ft at 2:15AM Sep 23, 2014Observed: 1.5 ft at 2:30AM Sep 23, 2014Observed: 1.5 ft at 2:45AM Sep 23, 2014Observed: 1.5 ft at 3:00AM Sep 23, 2014Observed: 1.5 ft at 3:15AM Sep 23, 2014Observed: 1.5 ft at 3:30AM Sep 23, 2014Observed: 1.5 ft at 3:45AM Sep 23, 2014Observed: 1.5 ft at 4:00AM Sep 23, 2014Observed: 1.5 ft at 4:15AM Sep 23, 2014Observed: 1.5 ft at 4:30AM Sep 23, 2014Observed: 1.5 ft at 4:45AM Sep 23, 2014Observed: 1.5 ft at 5:00AM Sep 23, 2014Observed: 1.5 ft at 5:15AM Sep 23, 2014Observed: 1.5 ft at 5:30AM Sep 23, 2014Observed: 1.5 ft at 5:45AM Sep 23, 2014Observed: 1.5 ft at 6:00AM Sep 23, 2014Observed: 1.5 ft at 6:15AM Sep 23, 2014Observed: 1.5 ft at 6:30AM Sep 23, 2014Observed: 1.5 ft at 6:45AM Sep 23, 2014Observed: 1.5 ft at 7:00AM Sep 23, 2014Observed: 1.5 ft at 7:15AM Sep 23, 2014Observed: 1.5 ft at 7:30AM Sep 23, 2014Observed: 1.5 ft at 7:45AM Sep 23, 2014Observed: 1.5 ft at 8:00AM Sep 23, 2014Observed: 1.5 ft at 8:15AM Sep 23, 2014Observed: 1.5 ft at 8:30AM Sep 23, 2014Observed: 1.5 ft at 8:45AM Sep 23, 2014Observed: 1.5 ft at 9:00AM Sep 23, 2014Observed: 1.5 ft at 9:15AM Sep 23, 2014Observed: 1.5 ft at 9:30AM Sep 23, 2014Observed: 1.5 ft at 9:45AM Sep 23, 2014Observed: 1.5 ft at 10:00AM Sep 23, 2014Observed: 1.5 ft at 10:15AM Sep 23, 2014Observed: 1.5 ft at 10:30AM Sep 23, 2014Observed: 1.5 ft at 10:45AM Sep 23, 2014Observed: 1.5 ft at 11:00AM Sep 23, 2014Observed: 1.5 ft at 11:15AM Sep 23, 2014Observed: 1.5 ft at 11:30AM Sep 23, 2014Observed: 1.5 ft at 11:45AM Sep 23, 2014Observed: 1.5 ft at 12:00PM Sep 23, 2014Observed: 1.5 ft at 12:15PM Sep 23, 2014Observed: 1.5 ft at 12:30PM Sep 23, 2014Observed: 1.5 ft at 12:45PM Sep 23, 2014Observed: 1.5 ft at 1:00PM Sep 23, 2014Observed: 1.5 ft at 1:15PM Sep 23, 2014Observed: 1.49 ft at 1:30PM Sep 23, 2014Observed: 1.49 ft at 1:45PM Sep 23, 2014Observed: 1.49 ft at 2:00PM Sep 23, 2014Observed: 1.49 ft at 2:15PM Sep 23, 2014Observed: 1.49 ft at 2:30PM Sep 23, 2014Observed: 1.49 ft at 2:45PM Sep 23, 2014Observed: 1.49 ft at 3:00PM Sep 23, 2014Observed: 1.49 ft at 3:15PM Sep 23, 2014Observed: 1.49 ft at 3:30PM Sep 23, 2014Observed: 1.49 ft at 3:45PM Sep 23, 2014Observed: 1.49 ft at 4:00PM Sep 23, 2014Observed: 1.49 ft at 4:15PM Sep 23, 2014Observed: 1.49 ft at 4:30PM Sep 23, 2014Observed: 1.49 ft at 4:45PM Sep 23, 2014Observed: 1.49 ft at 5:00PM Sep 23, 2014Observed: 1.49 ft at 5:15PM Sep 23, 2014Observed: 1.49 ft at 5:30PM Sep 23, 2014Observed: 1.49 ft at 5:45PM Sep 23, 2014Observed: 1.49 ft at 6:00PM Sep 23, 2014Observed: 1.49 ft at 6:15PM Sep 23, 2014Observed: 1.49 ft at 6:30PM Sep 23, 2014Observed: 1.49 ft at 6:45PM Sep 23, 2014Observed: 1.49 ft at 7:00PM Sep 23, 2014Observed: 1.49 ft at 7:15PM Sep 23, 2014Observed: 1.49 ft at 7:30PM Sep 23, 2014Observed: 1.49 ft at 7:45PM Sep 23, 2014Observed: 1.49 ft at 8:00PM Sep 23, 2014Observed: 1.48 ft at 8:15PM Sep 23, 2014Observed: 1.48 ft at 8:30PM Sep 23, 2014Observed: 1.48 ft at 8:45PM Sep 23, 2014Observed: 1.48 ft at 9:00PM Sep 23, 2014Highest Forecast: 1.5 ft 2:00AM Sep 24, 2014Highest Forecast: 1.5 ft 8:00AM Sep 24, 2014Forecast: 1.4 ft 2:00PM Sep 24, 2014Forecast: 1.4 ft 8:00PM Sep 24, 2014Forecast: 1.4 ft 2:00AM Sep 25, 2014Forecast: 1.4 ft 8:00AM Sep 25, 2014Forecast: 1.4 ft 2:00PM Sep 25, 2014Forecast: 1.4 ft 8:00PM Sep 25, 2014Forecast: 1.4 ft 2:00AM Sep 26, 2014Forecast: 1.4 ft 8:00AM Sep 26, 2014USGS--Water Resources of the United StatesWGTM3(plotting HGIRG) Graph Created (10:16PM Sep 23, 2014)ObservedForecast (issued 11:27AM Sep 23)Latest observed value: 1.48 ft at 9:00 PM EDT 23-Sep-2014. Flood Stage is 7 ft
Printable Image
About this graph
Tabular Data (UTC)
Tabular Data (EDT)
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

(P): Preliminary values subject to further review.

Low Water Records

For more information on your flood risk go to www.floodsmart.gov.

Zoom Level:16
KML Image
Gauge LocationGauge Map Marker
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
If you notice any errors in the below information, please contact our Webmaster
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  

Current/Historical Observations:

Resources Collapse
Hydrologic Resources Additional Resources
Collaborative Agencies Collapse
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.
NWS Information
National Weather Service
Boston Weather Forecast Office
445 Myles Standish Blvd
Taunton, MA 02780
Ask Questions/Webmaster
Page last modified: 27-Aug-2014 7:12 PM
Disclaimer
Credits
Glossary
Privacy Policy
About Us
Career Opportunities