About this river
Sandy River is a 2.5 mile river near Maineiac Outfitter in Maine. Streamflow is measured at the USGS gauge Sandy River near Mercer, Maine (site 01048000). The National Hydrography Dataset places it at stream order 6. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
1929 to 2026
Sandy River typically runs highest in April, at a median 2,810 cfs, and lowest in September, at 143 cfs. The highest flow on record for any single day is 37,500 cfs, in 2024.
| Month | Typical (cfs) | Usual range (cfs) | Relative level |
|---|---|---|---|
| January | 415 | 294 to 646 | |
| February | 370 | 268 to 564 | |
| March | 735 | 383 to 1,210 | |
| April | 2,810 | 1,760 to 4,225 | |
| May | 1,390 | 797 to 2,260 | |
| June | 483 | 291 to 917 | |
| July | 261 | 166 to 466 | |
| August | 156 | 101 to 286 | |
| September | 143 | 86 to 261 | |
| October | 258 | 120 to 569 | |
| November | 650 | 346 to 1,170 | |
| December | 570 | 326 to 1,030 |
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 89 years of record. Statistics published by the US Geological Survey for Sandy River near Mercer, Maine (site 01048000). 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 Sandy 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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