About this river
Connecticut River is a 2.9 mile river near Peacock Outfitters in Vermont. Streamflow is measured at the USGS gauge Connecticut River at North Walpole, NH (site 01154500). The National Hydrography Dataset places it at stream order 8. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
1942 to 2026
Connecticut River typically runs highest in April, at a median 23,000 cfs, and lowest in September, at 2,930 cfs. The highest flow on record for any single day is 88,300 cfs, in 1953.
| Month | Typical (cfs) | Usual range (cfs) | Relative level |
|---|---|---|---|
| January | 6,330 | 4,600 to 8,860 | |
| February | 5,880 | 4,290 to 8,330 | |
| March | 10,800 | 6,240 to 17,900 | |
| April | 23,000 | 15,750 to 35,600 | |
| May | 14,100 | 8,870 to 20,200 | |
| June | 6,830 | 4,160 to 9,925 | |
| July | 3,860 | 2,530 to 6,170 | |
| August | 3,110 | 2,030 to 5,000 | |
| September | 2,930 | 1,880 to 4,625 | |
| October | 4,360 | 2,730 to 7,180 | |
| November | 7,160 | 4,800 to 11,450 | |
| December | 7,290 | 5,230 to 11,100 |
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 84 years of record. Statistics published by the US Geological Survey for Connecticut River at North Walpole, NH (site 01154500). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.
Boat access nearby
One mapped launch sits in the mapped area of Connecticut River. Ramp data comes from the USGS national boat-ramp inventory.
- Pine StreetConnecticut RiverPublic
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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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