About this river
Natchaug River is a 4.3 mile river near Metacomet Tours in Connecticut. Streamflow is measured at the USGS gauge Natchaug River at Willimantic, CT (site 01122000). The National Hydrography Dataset places it at stream order 6. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
1931 to 2026
Natchaug River typically runs highest in March, at a median 468 cfs, and lowest in August, at 50 cfs. The highest flow on record for any single day is 18,200 cfs, in 1938.
| Month | Typical (cfs) | Usual range (cfs) | Relative level |
|---|---|---|---|
| January | 266 | 170 to 445 | |
| February | 289 | 183 to 475 | |
| March | 468 | 346 to 691 | |
| April | 430 | 305 to 695 | |
| May | 294 | 201 to 441 | |
| June | 142 | 101 to 269 | |
| July | 72 | 44 to 130 | |
| August | 50 | 30 to 98 | |
| September | 50 | 29 to 104 | |
| October | 77 | 41 to 170 | |
| November | 177 | 89 to 315 | |
| December | 261 | 141 to 475 |
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 90 years of record. Statistics published by the US Geological Survey for Natchaug River at Willimantic, CT (site 01122000). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.
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Paste this snippet anywhere, an outfitter page, a club site, a trip report, to show Natchaug 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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