About this river
Oyster River is a 3.0 mile stream near Seven Rivers Paddling in New Hampshire. Streamflow is measured at the USGS gauge Oyster River near Durham, NH (site 01073000). The National Hydrography Dataset places it at stream order 4. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
1935 to 2026
Oyster River typically runs highest in April, at a median 37 cfs, and lowest in September, at 1.4 cfs. The highest flow on record for any single day is 942 cfs, in 2007.
| Month | Typical (cfs) | Usual range (cfs) | Relative level |
|---|---|---|---|
| January | 13 | 7.8 to 22 | |
| February | 14 | 8.5 to 23 | |
| March | 33 | 20 to 58 | |
| April | 37 | 22 to 58 | |
| May | 16 | 11 to 30 | |
| June | 7.6 | 3.5 to 14 | |
| July | 2.6 | 1.4 to 5.7 | |
| August | 1.8 | 1.0 to 3.9 | |
| September | 1.4 | 0.9 to 3.3 | |
| October | 3.3 | 1.4 to 7.7 | |
| November | 9.8 | 3.8 to 22 | |
| December | 16 | 8.4 to 28 |
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 91 years of record. Statistics published by the US Geological Survey for Oyster River near Durham, NH (site 01073000). 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 Oyster River. Ramp data comes from the USGS national boat-ramp inventory.
- Jackson's LandingOyster RiverPublic
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