About this river
Nepaug River is a 2.8 mile stream near Collinsville Canoe & Kayak in Connecticut. Streamflow is measured at the USGS gauge Nepaug R near Nepaug, CT. (site 01187800). The National Hydrography Dataset places it at stream order 4. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
1922 to 2026
Nepaug River typically runs highest in March, at a median 62 cfs, and lowest in August, at 5.5 cfs. The highest flow on record for any single day is 4,000 cfs, in 1955.
| Month | Typical (cfs) | Usual range (cfs) | Relative level |
|---|---|---|---|
| January | 29 | 18 to 45 | |
| February | 30 | 19 to 49 | |
| March | 62 | 41 to 101 | |
| April | 59 | 41 to 93 | |
| May | 37 | 25 to 59 | |
| June | 17 | 10 to 33 | |
| July | 7.5 | 4.1 to 17 | |
| August | 5.5 | 3.3 to 14 | |
| September | 6.1 | 3.4 to 14 | |
| October | 8.8 | 4.8 to 18 | |
| November | 20 | 9.9 to 37 | |
| December | 28 | 16 to 47 |
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 61 years of record. Statistics published by the US Geological Survey for Nepaug R near Nepaug, CT. (site 01187800). 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 Nepaug 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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