Around here
Around East Branch Eightmile River
Data Source: Recreation.gov · Source: USGS GNIS · Public land: USGS PAD-US
About this river
East Branch Eightmile River is a 7.8 mile river near Black Hall Marina in Connecticut. Streamflow is measured at the USGS gauge East Branch Eightmile River near North Lyme, CT (site 01194500). The National Hydrography Dataset places it at stream order 5. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
1938 to 2026
East Branch Eightmile River typically runs highest in March, at a median 70 cfs, and lowest in September, at 4.2 cfs. The highest flow on record for any single day is 1,810 cfs, in 2010.
Show the numbers
| Month | Typical (cfs) | Usual range (cfs) |
|---|---|---|
| January | 44 | 30 to 72 |
| February | 49 | 30 to 78 |
| March | 70 | 47 to 103 |
| April | 59 | 42 to 87 |
| May | 43 | 29 to 65 |
| June | 18 | 11 to 29 |
| July | 6.6 | 3.5 to 16 |
| August | 4.7 | 2.1 to 11 |
| September | 4.2 | 1.9 to 11 |
| October | 9.0 | 3.8 to 20 |
| November | 24 | 12 to 47 |
| December | 45 | 26 to 76 |
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 69 years of record. Statistics published by the US Geological Survey for East Branch Eightmile River near North Lyme, CT (site 01194500). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.
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