About this river
Connecticut River is a 15.7 mile river near TBC Guides in New Hampshire. Streamflow is measured at the USGS gauge Connecticut River at West Lebanon, NH (site 01144500). The National Hydrography Dataset places it at stream order 8. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
1912 to 2026
Connecticut River typically runs highest in April, at a median 16,800 cfs, and lowest in September, at 2,410 cfs. The highest flow on record for any single day is 129,000 cfs, in 1928.
| Month | Typical (cfs) | Usual range (cfs) | Relative level |
|---|---|---|---|
| January | 4,620 | 3,320 to 6,610 | |
| February | 4,190 | 2,970 to 5,850 | |
| March | 6,400 | 3,920 to 11,300 | |
| April | 16,800 | 12,000 to 25,850 | |
| May | 11,400 | 7,180 to 15,200 | |
| June | 5,000 | 3,135 to 7,565 | |
| July | 3,120 | 2,110 to 4,780 | |
| August | 2,540 | 1,670 to 3,880 | |
| September | 2,410 | 1,645 to 3,845 | |
| October | 3,370 | 2,230 to 5,500 | |
| November | 5,540 | 3,750 to 8,385 | |
| December | 5,300 | 3,910 to 7,670 |
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 112 years of record. Statistics published by the US Geological Survey for Connecticut River at West Lebanon, NH (site 01144500). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.
Boat access nearby
8 mapped launches sit in the mapped area of Connecticut River, all of them public access. Ramp data comes from the USGS national boat-ramp inventory.
- Perkins PondPerkins PondPublic
- Lake ConistonLake ConistonPublic
- George PondGeorge PondPublic
- Crystal LakeCrystal LakePublic
- Mascoma LakeMascoma LakePublic
- Mascoma LakeMascoma LakePublic
- Goose Pond ParkGoose PondPublic
- Ompompanoosuc RiverOmpompanoosuc RiverPublic
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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