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Hydrograph River at a Glance Download
Connecticut River at Thompsonville Stage (ft)Observed: 7.94 ft at 7:45AM Sep 19, 2017Observed: 7.94 ft at 8:00AM Sep 19, 2017Observed: 7.92 ft at 8:15AM Sep 19, 2017Observed: 7.93 ft at 8:30AM Sep 19, 2017Observed: 7.93 ft at 8:45AM Sep 19, 2017Observed: 7.94 ft at 9:00AM Sep 19, 2017Observed: 7.94 ft at 9:15AM Sep 19, 2017Observed: 7.94 ft at 9:30AM Sep 19, 2017Observed: 7.95 ft at 9:45AM Sep 19, 2017Observed: 7.95 ft at 10:00AM Sep 19, 2017Observed: 7.95 ft at 10:15AM Sep 19, 2017Observed: 7.96 ft at 10:30AM Sep 19, 2017Observed: 7.95 ft at 10:45AM Sep 19, 2017Observed: 7.96 ft at 11:00AM Sep 19, 2017Highest Observation: 7.97 ft at 11:15AM Sep 19, 2017Observed: 7.96 ft at 11:30AM Sep 19, 2017Observed: 7.96 ft at 11:45AM Sep 19, 2017Observed: 7.96 ft at 12:00PM Sep 19, 2017Observed: 7.95 ft at 12:15PM Sep 19, 2017Observed: 7.96 ft at 12:30PM Sep 19, 2017Observed: 7.94 ft at 12:45PM Sep 19, 2017Observed: 7.94 ft at 1:00PM Sep 19, 2017Observed: 7.94 ft at 1:15PM Sep 19, 2017Observed: 7.95 ft at 1:30PM Sep 19, 2017Observed: 7.95 ft at 1:31PM Sep 19, 2017Observed: 7.95 ft at 1:45PM Sep 19, 2017Observed: 7.94 ft at 2:00PM Sep 19, 2017Observed: 7.94 ft at 2:15PM Sep 19, 2017Observed: 7.93 ft at 2:30PM Sep 19, 2017Observed: 7.95 ft at 2:45PM Sep 19, 2017Observed: 7.95 ft at 3:00PM Sep 19, 2017Observed: 7.93 ft at 3:15PM Sep 19, 2017Observed: 7.92 ft at 3:30PM Sep 19, 2017Observed: 7.93 ft at 3:45PM Sep 19, 2017Observed: 7.93 ft at 4:00PM Sep 19, 2017Observed: 7.92 ft at 4:15PM Sep 19, 2017Observed: 7.92 ft at 4:30PM Sep 19, 2017Observed: 7.92 ft at 4:45PM Sep 19, 2017Observed: 7.9 ft at 5:00PM Sep 19, 2017Observed: 7.93 ft at 5:15PM Sep 19, 2017Observed: 7.92 ft at 5:30PM Sep 19, 2017Observed: 7.91 ft at 5:45PM Sep 19, 2017Observed: 7.9 ft at 6:00PM Sep 19, 2017Observed: 7.9 ft at 6:15PM Sep 19, 2017Observed: 7.89 ft at 6:30PM Sep 19, 2017Observed: 7.88 ft at 6:45PM Sep 19, 2017Observed: 7.89 ft at 7:00PM Sep 19, 2017Observed: 7.88 ft at 7:15PM Sep 19, 2017Observed: 7.88 ft at 7:30PM Sep 19, 2017Observed: 7.88 ft at 7:32PM Sep 19, 2017Observed: 7.87 ft at 7:45PM Sep 19, 2017Observed: 7.87 ft at 8:00PM Sep 19, 2017Observed: 7.87 ft at 8:15PM Sep 19, 2017Observed: 7.86 ft at 8:30PM Sep 19, 2017Observed: 7.86 ft at 8:45PM Sep 19, 2017Observed: 7.85 ft at 9:00PM Sep 19, 2017Observed: 7.86 ft at 9:15PM Sep 19, 2017Observed: 7.85 ft at 9:30PM Sep 19, 2017Observed: 7.85 ft at 9:45PM Sep 19, 2017Observed: 7.85 ft at 10:00PM Sep 19, 2017Observed: 7.84 ft at 10:15PM Sep 19, 2017Observed: 7.86 ft at 10:30PM Sep 19, 2017Observed: 7.84 ft at 10:45PM Sep 19, 2017Observed: 7.83 ft at 11:00PM Sep 19, 2017Observed: 7.83 ft at 11:15PM Sep 19, 2017Observed: 7.83 ft at 11:30PM Sep 19, 2017Observed: 7.83 ft at 11:45PM Sep 19, 2017Observed: 7.82 ft at 12:00AM Sep 20, 2017Observed: 7.82 ft at 12:15AM Sep 20, 2017Observed: 7.82 ft at 12:30AM Sep 20, 2017Observed: 7.83 ft at 12:45AM Sep 20, 2017Observed: 7.8 ft at 1:00AM Sep 20, 2017Observed: 7.8 ft at 1:15AM Sep 20, 2017Observed: 7.8 ft at 1:30AM Sep 20, 2017Observed: 7.8 ft at 1:31AM Sep 20, 2017Observed: 7.8 ft at 1:45AM Sep 20, 2017Observed: 7.8 ft at 2:00AM Sep 20, 2017Observed: 7.79 ft at 2:15AM Sep 20, 2017Observed: 7.78 ft at 2:30AM Sep 20, 2017Observed: 7.79 ft at 2:45AM Sep 20, 2017Observed: 7.79 ft at 3:00AM Sep 20, 2017Observed: 7.78 ft at 3:15AM Sep 20, 2017Observed: 7.78 ft at 3:30AM Sep 20, 2017Observed: 7.78 ft at 3:45AM Sep 20, 2017Observed: 7.77 ft at 4:00AM Sep 20, 2017Observed: 7.76 ft at 4:15AM Sep 20, 2017Observed: 7.78 ft at 4:30AM Sep 20, 2017Observed: 7.76 ft at 4:45AM Sep 20, 2017Observed: 7.76 ft at 5:00AM Sep 20, 2017Observed: 7.76 ft at 5:15AM Sep 20, 2017Observed: 7.75 ft at 5:30AM Sep 20, 2017Observed: 7.75 ft at 5:45AM Sep 20, 2017Observed: 7.75 ft at 6:00AM Sep 20, 2017Observed: 7.75 ft at 6:15AM Sep 20, 2017Observed: 7.74 ft at 6:30AM Sep 20, 2017Observed: 7.74 ft at 6:45AM Sep 20, 2017Observed: 7.74 ft at 7:00AM Sep 20, 2017Observed: 7.75 ft at 7:15AM Sep 20, 2017Observed: 7.74 ft at 7:30AM Sep 20, 2017Observed: 7.74 ft at 7:31AM Sep 20, 2017Observed: 7.73 ft at 7:45AM Sep 20, 2017Observed: 7.72 ft at 8:00AM Sep 20, 2017Observed: 7.73 ft at 8:15AM Sep 20, 2017Observed: 7.72 ft at 8:30AM Sep 20, 2017Observed: 7.74 ft at 8:45AM Sep 20, 2017Observed: 7.74 ft at 9:00AM Sep 20, 2017Observed: 7.74 ft at 9:15AM Sep 20, 2017Observed: 7.73 ft at 9:30AM Sep 20, 2017Observed: 7.74 ft at 9:45AM Sep 20, 2017Observed: 7.74 ft at 10:00AM Sep 20, 2017Observed: 7.74 ft at 10:15AM Sep 20, 2017Observed: 7.74 ft at 10:30AM Sep 20, 2017Observed: 7.74 ft at 10:45AM Sep 20, 2017Observed: 7.75 ft at 11:00AM Sep 20, 2017Observed: 7.77 ft at 11:15AM Sep 20, 2017Observed: 7.77 ft at 11:30AM Sep 20, 2017Observed: 7.77 ft at 11:45AM Sep 20, 2017Observed: 7.77 ft at 12:00PM Sep 20, 2017Observed: 7.78 ft at 12:15PM Sep 20, 2017Observed: 7.78 ft at 12:30PM Sep 20, 2017Observed: 7.78 ft at 12:45PM Sep 20, 2017Observed: 7.77 ft at 1:00PM Sep 20, 2017Observed: 7.77 ft at 1:15PM Sep 20, 2017Observed: 7.77 ft at 1:30PM Sep 20, 2017Observed: 7.77 ft at 1:31PM Sep 20, 2017Observed: 7.77 ft at 1:45PM Sep 20, 2017Observed: 7.77 ft at 2:00PM Sep 20, 2017Observed: 7.76 ft at 2:15PM Sep 20, 2017Observed: 7.76 ft at 2:30PM Sep 20, 2017Observed: 7.76 ft at 2:45PM Sep 20, 2017Observed: 7.76 ft at 3:00PM Sep 20, 2017Observed: 7.76 ft at 3:15PM Sep 20, 2017Observed: 7.76 ft at 3:30PM Sep 20, 2017Observed: 7.76 ft at 3:45PM Sep 20, 2017Observed: 7.76 ft at 4:00PM Sep 20, 2017Observed: 7.76 ft at 4:15PM Sep 20, 2017Observed: 7.75 ft at 4:30PM Sep 20, 2017Observed: 7.75 ft at 4:45PM Sep 20, 2017Observed: 7.76 ft at 5:00PM Sep 20, 2017Observed: 7.76 ft at 5:15PM Sep 20, 2017Observed: 7.76 ft at 5:30PM Sep 20, 2017Observed: 7.75 ft at 5:45PM Sep 20, 2017Observed: 7.75 ft at 6:00PM Sep 20, 2017Observed: 7.74 ft at 6:15PM Sep 20, 2017Observed: 7.74 ft at 6:30PM Sep 20, 2017Observed: 7.73 ft at 6:45PM Sep 20, 2017Observed: 7.73 ft at 7:00PM Sep 20, 2017Observed: 7.73 ft at 7:15PM Sep 20, 2017Observed: 7.73 ft at 7:30PM Sep 20, 2017Observed: 7.73 ft at 7:45PM Sep 20, 2017Observed: 7.73 ft at 8:00PM Sep 20, 2017Observed: 7.73 ft at 8:15PM Sep 20, 2017Observed: 7.74 ft at 8:30PM Sep 20, 2017Observed: 7.74 ft at 8:45PM Sep 20, 2017Observed: 7.71 ft at 9:00PM Sep 20, 2017Observed: 7.72 ft at 9:15PM Sep 20, 2017Observed: 7.73 ft at 9:30PM Sep 20, 2017Observed: 7.73 ft at 9:45PM Sep 20, 2017Observed: 7.72 ft at 10:00PM Sep 20, 2017Observed: 7.72 ft at 10:15PM Sep 20, 2017Observed: 7.71 ft at 10:30PM Sep 20, 2017Observed: 7.71 ft at 10:45PM Sep 20, 2017Observed: 7.72 ft at 11:00PM Sep 20, 2017Observed: 7.73 ft at 11:15PM Sep 20, 2017Observed: 7.72 ft at 11:30PM Sep 20, 2017Observed: 7.73 ft at 11:45PM Sep 20, 2017Observed: 7.74 ft at 12:00AM Sep 21, 2017Observed: 7.72 ft at 12:15AM Sep 21, 2017Observed: 7.73 ft at 12:30AM Sep 21, 2017Observed: 7.72 ft at 12:45AM Sep 21, 2017Observed: 7.73 ft at 1:00AM Sep 21, 2017Observed: 7.73 ft at 1:15AM Sep 21, 2017Observed: 7.72 ft at 1:30AM Sep 21, 2017Observed: 7.74 ft at 1:45AM Sep 21, 2017Observed: 7.74 ft at 1:47AM Sep 21, 2017Observed: 7.74 ft at 2:00AM Sep 21, 2017Observed: 7.74 ft at 2:15AM Sep 21, 2017Observed: 7.74 ft at 2:30AM Sep 21, 2017Observed: 7.73 ft at 2:45AM Sep 21, 2017Observed: 7.74 ft at 3:00AM Sep 21, 2017Observed: 7.75 ft at 3:15AM Sep 21, 2017Observed: 7.76 ft at 3:30AM Sep 21, 2017Observed: 7.77 ft at 3:45AM Sep 21, 2017Observed: 7.79 ft at 4:00AM Sep 21, 2017Observed: 7.79 ft at 4:15AM Sep 21, 2017Observed: 7.81 ft at 4:30AM Sep 21, 2017Observed: 7.82 ft at 4:45AM Sep 21, 2017Observed: 7.84 ft at 5:00AM Sep 21, 2017Observed: 7.84 ft at 5:15AM Sep 21, 2017Observed: 7.85 ft at 5:30AM Sep 21, 2017Observed: 7.85 ft at 5:45AM Sep 21, 2017Observed: 7.85 ft at 6:00AM Sep 21, 2017Observed: 7.86 ft at 6:15AM Sep 21, 2017Observed: 7.86 ft at 6:30AM Sep 21, 2017Observed: 7.87 ft at 6:45AM Sep 21, 2017Observed: 7.87 ft at 7:00AM Sep 21, 2017Observed: 7.87 ft at 7:15AM Sep 21, 2017Observed: 7.87 ft at 7:30AM Sep 21, 2017Observed: 7.87 ft at 7:45AM Sep 21, 2017Observed: 7.87 ft at 7:46AM Sep 21, 2017Observed: 7.87 ft at 8:00AM Sep 21, 2017Observed: 7.87 ft at 8:15AM Sep 21, 2017Observed: 7.86 ft at 8:30AM Sep 21, 2017Observed: 7.86 ft at 8:45AM Sep 21, 2017Observed: 7.85 ft at 9:00AM Sep 21, 2017Observed: 7.86 ft at 9:15AM Sep 21, 2017Observed: 7.84 ft at 9:30AM Sep 21, 2017Observed: 7.85 ft at 9:45AM Sep 21, 2017Observed: 7.85 ft at 10:00AM Sep 21, 2017Observed: 7.84 ft at 10:15AM Sep 21, 2017Observed: 7.84 ft at 10:30AM Sep 21, 2017Observed: 7.85 ft at 10:45AM Sep 21, 2017Observed: 7.85 ft at 11:00AM Sep 21, 2017Observed: 7.85 ft at 11:15AM Sep 21, 2017Observed: 7.84 ft at 11:30AM Sep 21, 2017Observed: 7.83 ft at 11:45AM Sep 21, 2017Observed: 7.83 ft at 12:00PM Sep 21, 2017Observed: 7.84 ft at 12:15PM Sep 21, 2017Observed: 7.84 ft at 12:30PM Sep 21, 2017Observed: 7.84 ft at 12:45PM Sep 21, 2017Observed: 7.83 ft at 1:00PM Sep 21, 2017Observed: 7.83 ft at 1:15PM Sep 21, 2017Observed: 7.82 ft at 1:30PM Sep 21, 2017Observed: 7.81 ft at 1:45PM Sep 21, 2017Observed: 7.81 ft at 1:46PM Sep 21, 2017Observed: 7.81 ft at 2:00PM Sep 21, 2017Observed: 7.81 ft at 2:15PM Sep 21, 2017Observed: 7.81 ft at 2:30PM Sep 21, 2017Observed: 7.8 ft at 2:45PM Sep 21, 2017Observed: 7.81 ft at 3:00PM Sep 21, 2017Observed: 7.81 ft at 3:15PM Sep 21, 2017Observed: 7.81 ft at 3:30PM Sep 21, 2017Observed: 7.81 ft at 3:45PM Sep 21, 2017Observed: 7.81 ft at 4:00PM Sep 21, 2017Observed: 7.79 ft at 4:15PM Sep 21, 2017Observed: 7.81 ft at 4:30PM Sep 21, 2017Observed: 7.79 ft at 4:45PM Sep 21, 2017Observed: 7.79 ft at 5:00PM Sep 21, 2017Observed: 7.79 ft at 5:15PM Sep 21, 2017Observed: 7.79 ft at 5:30PM Sep 21, 2017Observed: 7.79 ft at 5:45PM Sep 21, 2017Observed: 7.79 ft at 6:00PM Sep 21, 2017Observed: 7.79 ft at 6:15PM Sep 21, 2017Observed: 7.79 ft at 6:30PM Sep 21, 2017Observed: 7.79 ft at 6:45PM Sep 21, 2017Observed: 7.79 ft at 7:00PM Sep 21, 2017Observed: 7.79 ft at 7:15PM Sep 21, 2017Observed: 7.78 ft at 7:30PM Sep 21, 2017Observed: 7.78 ft at 7:45PM Sep 21, 2017Observed: 7.78 ft at 7:46PM Sep 21, 2017Observed: 7.79 ft at 8:00PM Sep 21, 2017Observed: 7.78 ft at 8:15PM Sep 21, 2017Observed: 7.79 ft at 8:30PM Sep 21, 2017Observed: 7.78 ft at 8:45PM Sep 21, 2017Observed: 7.79 ft at 9:00PM Sep 21, 2017Observed: 7.77 ft at 9:15PM Sep 21, 2017Observed: 7.78 ft at 9:30PM Sep 21, 2017Observed: 7.77 ft at 9:45PM Sep 21, 2017Observed: 7.78 ft at 10:00PM Sep 21, 2017Observed: 7.78 ft at 10:15PM Sep 21, 2017Observed: 7.79 ft at 10:30PM Sep 21, 2017Observed: 7.79 ft at 10:45PM Sep 21, 2017Observed: 7.79 ft at 11:00PM Sep 21, 2017Observed: 7.79 ft at 11:15PM Sep 21, 2017Observed: 7.78 ft at 11:30PM Sep 21, 2017Observed: 7.8 ft at 11:45PM Sep 21, 2017Observed: 7.79 ft at 12:00AM Sep 22, 2017Observed: 7.79 ft at 12:15AM Sep 22, 2017Observed: 7.77 ft at 12:30AM Sep 22, 2017Observed: 7.78 ft at 12:45AM Sep 22, 2017Observed: 7.78 ft at 1:00AM Sep 22, 2017Observed: 7.78 ft at 1:15AM Sep 22, 2017Observed: 7.77 ft at 1:30AM Sep 22, 2017Observed: 7.77 ft at 1:45AM Sep 22, 2017Observed: 7.77 ft at 1:46AM Sep 22, 2017Observed: 7.77 ft at 2:00AM Sep 22, 2017Observed: 7.77 ft at 2:15AM Sep 22, 2017Observed: 7.77 ft at 2:30AM Sep 22, 2017Observed: 7.77 ft at 2:45AM Sep 22, 2017Observed: 7.78 ft at 3:00AM Sep 22, 2017Observed: 7.78 ft at 3:15AM Sep 22, 2017Observed: 7.77 ft at 3:30AM Sep 22, 2017Observed: 7.78 ft at 3:45AM Sep 22, 2017Observed: 7.79 ft at 4:00AM Sep 22, 2017Observed: 7.79 ft at 4:15AM Sep 22, 2017Observed: 7.78 ft at 4:30AM Sep 22, 2017Observed: 7.78 ft at 4:45AM Sep 22, 2017Observed: 7.78 ft at 5:00AM Sep 22, 2017Observed: 7.78 ft at 5:15AM Sep 22, 2017Observed: 7.8 ft at 5:30AM Sep 22, 2017Observed: 7.81 ft at 5:45AM Sep 22, 2017Observed: 7.82 ft at 6:00AM Sep 22, 2017Observed: 7.83 ft at 6:15AM Sep 22, 2017Observed: 7.83 ft at 6:30AM Sep 22, 2017Forecast: 7.8 ft 8:00AM Sep 22, 2017Highest Forecast: 7.9 ft 2:00PM Sep 22, 2017Highest Forecast: 7.9 ft 8:00PM Sep 22, 2017Highest Forecast: 7.9 ft 2:00AM Sep 23, 2017Highest Forecast: 7.9 ft 8:00AM Sep 23, 2017Highest Forecast: 7.9 ft 2:00PM Sep 23, 2017Highest Forecast: 7.9 ft 8:00PM Sep 23, 2017Forecast: 7.8 ft 2:00AM Sep 24, 2017Highest Forecast: 7.9 ft 8:00AM Sep 24, 2017USGS--Water Resources of the United StatesTMVC3(plotting HGIR2) Graph Created (7:30AM Sep 22, 2017)ObservedForecast (issued 10:57AM Sep 21)Latest observed value: 7.83 ft at 6:30 AM EDT 22-Sep-2017. Flood Stage is 15 ft
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About this graph
Tabular Data (UTC)
Tabular Data (EDT)
XML Data
RSS Files
Datum: NGVD29
Metadata
NOTE: Forecasts for the Connecticut River at Thompsonville are issued routinely year-round.
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Upstream Gauge - at Springfield Upstream Gauge Downstream Gauge Downstream Gauge - at Hartford
Flood Categories (in feet)
Major Flood Stage: 19
Moderate Flood Stage: 17
Flood Stage: 15
Action Stage: 14
Low Stage (in feet): -9999

Historic Crests
(1) 26.60 ft on 03/20/1936
(2) 24.40 ft on 07/23/1938
(3) 20.93 ft on 08/19/1955
(4) 20.80 ft on 05/31/1984
(5) 20.47 ft on 04/20/1933
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 15.66 ft on 04/17/2014
(2) 16.05 ft on 09/08/2011
(3) 17.82 ft on 08/30/2011
(4) 15.35 ft on 04/18/2011
(5) 15.46 ft on 04/14/2011
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
Currently none available.

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
18 Significant and widespread flooding along the river can be expected from the Massachusetts towns of Agawam and Longmeadow, through the northern Connecticut towns of Suffield and Enfield.
17 Flooding will become more widespread along the Connecticut River from the Massachusetts towns of Agawam and Longmeadow, through the northern Connecticut towns of Suffield and Enfield.
16 Flooding impacts low lying areas along the Connecticut River from the Massachusetts towns of Agawam and Longmeadow, through the northern Connecticut towns of Suffield and Enfield.
15 Lowland flooding will begin along the Connecticut River near Thompsonville.
About This Location Collapse

Latitude: 41.987319° N, Longitude: 72.605367° W, Horizontal Datum: NAD27

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft 15 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 38.48 43.48 Older USGS topographic maps, NGVD29 benchmarks
MSL Not Available Not Available Older USGS topographic maps, MSL benchmarks
Other NULL NULL  

Current/Historical Observations:

Additional Information Collapse
Potential River Levels - Used to
Potential River Levels
Used to Estimate the Chance of Flooding and the Range of Possible River Levels
3 Day (SREF) 7 Day (NAEFS) 7 Day (GEFS)
SREF Ensemble NAEFS Ensemble  GEFS Ensemble 

Note: Use the official hydrograph at the top of this web page for river levels within the next 48 hours.

See the Product Description Document link for more details on the interpretation of the 3,7 day graphics. 

Click individual graphics to enlarge.

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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
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Page last modified: 21-Dec-2016 5:21 PM
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