About this river
Mousam River is an 18.0 mile river near Aquaholics Surf Shop in Maine. Streamflow is measured at the USGS gauge Mousam River at Route 4 near Sanford, Maine (site 01068910). The National Hydrography Dataset places it at stream order 6. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
2008 to 2026
Mousam River typically runs highest in April, at a median 170 cfs, and lowest in August, at 28 cfs. The highest flow on record for any single day is 1,170 cfs, in 2010.
| Month | Typical (cfs) | Usual range (cfs) | Relative level |
|---|---|---|---|
| January | 96 | 58 to 151 | |
| February | 77 | 54 to 114 | |
| March | 119 | 85 to 181 | |
| April | 170 | 87 to 269 | |
| May | 64 | 43 to 105 | |
| June | 43 | 32 to 80 | |
| July | 32 | 25 to 61 | |
| August | 28 | 23 to 47 | |
| September | 28 | 22 to 51 | |
| October | 52 | 29 to 94 | |
| November | 51 | 34 to 88 | |
| December | 108 | 44 to 185 |
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 18 years of record. Statistics published by the US Geological Survey for Mousam River at Route 4 near Sanford, Maine (site 01068910). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.
Embed this gauge on your site
Paste this snippet anywhere, an outfitter page, a club site, a trip report, to show Mousam 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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