Connecticut River
Grafton / Coos Co. · 270 mi · Class I–II
11,200CFS/ 5.80 ft
Above Optimal
Rising (+200 cfs/hr)· +500 cfs in 3h
Optimal: 2000–10000 CFS · USGS #01138500
Flow data is live from USGS·Rapid classifications and CFS ranges need community verification·Know this river?
270 mi
Length
Class I–II
Difficulty
2000–10000 cfs
Optimal
6,200 cfs
Avg Flow
5,580 cfs
Hist. Median
#01138500
USGS Gauge
Connecticut River National Blueway · Silvio O. Conte National Fish & Wildlife Refuge

The longest river in New England forms the entire western border of New Hampshire. The Connecticut flows 270 miles along the NH/VT boundary through pastoral valley farmland, covered bridges, and Dartmouth College country. Class I–II paddling with big water volume and sweeping mountain views make this the premier multi-day canoe trip in northern New England.

Trip sections
Pittsburg to Lancaster — remote upper valley, moose country
Lancaster to Hanover — pastoral farmland, Dartmouth country
Hanover to Charlestown — Class I–II, covered bridges
Outfitters
North Star Canoe Rentals
Connecticut River trips from Cornish NH, multi-day specialists
72-Hour Flow Forecast
NOAA NWPS
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10-Year Flow Patterns
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Data Quality

River conditions are community-verified. CFS ranges, difficulty ratings, and trip sections may not reflect every flow level or seasonal change. Always check current conditions, scout unfamiliar rapids, and paddle within your skill level. If you spot an error, use the Improve This River button at the top of the page — your local knowledge is what makes this atlas accurate.