About this river
Connecticut River is a 9.4 mile river near North Country Kayak in New Hampshire. Streamflow is measured at the USGS gauge Connecticut River near Dalton, NH (site 01131500). The National Hydrography Dataset places it at stream order 7. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
1927 to 2026
Connecticut River typically runs highest in April, at a median 6,055 cfs, and lowest in September, at 1,100 cfs. The highest flow on record for any single day is 46,500 cfs, in 1936.
| Month | Typical (cfs) | Usual range (cfs) | Relative level |
|---|---|---|---|
| January | 1,850 | 1,450 to 2,550 | |
| February | 1,550 | 1,210 to 2,080 | |
| March | 2,080 | 1,250 to 3,570 | |
| April | 6,055 | 4,375 to 10,200 | |
| May | 4,200 | 2,750 to 6,490 | |
| June | 1,940 | 1,330 to 3,000 | |
| July | 1,280 | 909 to 1,980 | |
| August | 1,150 | 800 to 1,770 | |
| September | 1,100 | 775 to 1,745 | |
| October | 1,550 | 1,060 to 2,520 | |
| November | 2,365 | 1,655 to 3,420 | |
| December | 2,130 | 1,610 to 3,000 |
Typical is the median of each month’s daily median values, and the usual range runs from the median 25th to the median 75th percentile, across about 99 years of record. Statistics published by the US Geological Survey for Connecticut River near Dalton, NH (site 01131500). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.
Embed this gauge on your site
Paste this snippet anywhere, an outfitter page, a club site, a trip report, to show Connecticut River's live streamflow, water level and 7-day trend. It reads the USGS gauge directly, updates itself, and links back here.
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