About this river
Pemigewasset River is a 5.4 mile river near Outdoor New England | ONE in New Hampshire. Streamflow is measured at the USGS gauge Merrimack River at Franklin Junction, NH (site 01081500). The National Hydrography Dataset places it at stream order 6. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
1903 to 2026
Pemigewasset River typically runs highest in April, at a median 5,945 cfs, and lowest in September, at 1,110 cfs. The highest flow on record for any single day is 73,700 cfs, in 1936.
| Month | Typical (cfs) | Usual range (cfs) | Relative level |
|---|---|---|---|
| January | 1,900 | 1,390 to 2,790 | |
| February | 1,750 | 1,270 to 2,450 | |
| March | 2,450 | 1,720 to 3,940 | |
| April | 5,945 | 4,200 to 8,555 | |
| May | 4,180 | 2,900 to 5,940 | |
| June | 1,915 | 1,365 to 3,040 | |
| July | 1,250 | 932 to 1,770 | |
| August | 1,120 | 835 to 1,520 | |
| September | 1,110 | 814 to 1,565 | |
| October | 1,380 | 940 to 1,940 | |
| November | 1,915 | 1,270 to 3,010 | |
| December | 1,980 | 1,380 to 3,280 |
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 99 years of record. Statistics published by the US Geological Survey for Merrimack River at Franklin Junction, NH (site 01081500). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.
Boat access nearby
3 mapped launches sit in the mapped area of Pemigewasset River, all of them public access. Ramp data comes from the USGS national boat-ramp inventory.
- Franklin High - Lower FieldWinnipesaukee RiverPublic
- FranklinPemigewasset RiverPublic
- Shaw CovePemigewasset RiverPublic
Embed this gauge on your site
Paste this snippet anywhere, an outfitter page, a club site, a trip report, to show Pemigewasset 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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