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Seven Rivers Paddling

Oyster River near Portsmouth, NH

Stream10.3 mi
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Around here

Around Oyster River

Great Bay National Wildlife Refuge7.4 mi2 mi

Data Source: Recreation.gov Ā· Source: USGS GNIS Ā· Public land: USGS PAD-US

About this river

Oyster River is a 10.3 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.

Show the numbers
Typical flow by month at Oyster River near Durham, NH, in cfs
MonthTypical (cfs)Usual range (cfs)
January137.8 to 22
February148.5 to 23
March3320 to 58
April3721 to 58
May1711 to 30
June7.53.5 to 14
July2.61.4 to 5.7
August1.81.0 to 3.9
September1.40.9 to 3.3
October3.31.4 to 7.7
November9.83.8 to 22
December168.4 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 92 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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This river section as an art print, drawn over the real terrain with its miles, plus the trails, roads and peaks around it. Pick the colors and the size, and see the finished print before you buy. From $39, shipping included.

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