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This probabilistic forecast is issued by the Northeast River Forecast Center.
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About this graph
Forecasts for the Connecticut River at North Walpole are issued routinely year-round.
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Upstream Gauge - at West Lebanon Upstream Gauge Downstream Gauge Downstream Gauge - at Montague
Zoom Level:16
Flood Categories (in feet)
Major Flood Stage: 35
Moderate Flood Stage: 32
Flood Stage: 28
Action Stage: 26
Low Stage (in feet): -9999

Historic Crests
(1) 43.80 ft on 03/19/1936
(2) 39.10 ft on 09/22/1938
(3) 31.38 ft on 08/29/2011
(4) 30.37 ft on 03/27/1953
(5) 29.85 ft on 04/05/1960
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(P): Preliminary values subject to further review.

Recent Crests
(1) 28.22 ft on 07/11/2023 (P)
(2) 31.38 ft on 08/29/2011
(3) 25.31 ft on 04/23/2001
(4) 25.75 ft on 04/01/1998
(5) 24.15 ft on 05/13/1996
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
Currently none available.
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Gauge LocationGauge Map Marker
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
52.3 Maximum reportable stage of river gage.
38 This is a life threatening flood. Flooding of this magnitude has not been experienced since the Great New England Hurricane of 1938.
36 This is a life threatening flood. Flooding of this magnitude has not been experienced since the Great New England Hurricane of 1938.
34 Low lying areas along the river from Walpole to Hinsdale are flooded. Roadways bordering the river may be impassable including stretches of Route 5 in southern Vermont.
32 Extensive flooding occurs along stretches of Route 5, especially in Westminster, affecting homes and businesses.
31 Low lying businesses and residences from Walpole and Westminster to the Massachusetts border experience flooding along the river. Significant flooding occurs along route 5 in Vermont, especially in Westminster. Bridges crossing the river could be shut down. Backwater flooding likely along tributary streams.
29 Route 5 is inundated with up to 1 foot of water in sections of Westminster. Minor flooding of some farmland along the river occurs from Walpole south to the Massachusetts border.
28 Minor flooding affects low lying areas along the river from Walpole and Westminster downstream to the Massachusetts border. Portions of low lying roads along the river are affected including Route 5 and some adjacent businesses in Westminster. Farming interests along the river could experience flooding.

Other Real-time and/or Archive Data Sources:

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
10 Day (HEFS) 7 Day (NAEFS) 7 Day (GEFS)
HEFS Ensemble NAEFS Ensemble GEFS Ensemble

Note: Use the official hydrograph at the top of this web page for river levels within the next 72 hours.

Click individual graphics to enlarge.

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
Gray Weather Forecast Office
P.O. Box 1208, 1 Weather Lane, Route 231
Gray, ME 04039
(207) 688-3216
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Page last modified: 2-Nov-2020 7:30 PM
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