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Around Marys River
Data Source: Recreation.gov · Source: USGS GNIS · Public land: USGS PAD-US
About this river
Marys River is a 42.6 mile river. Streamflow is measured at the USGS gauge Marys River near Philomath, OR (site 14171000). The National Hydrography Dataset places it at stream order 7. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
1941 to 2026
Marys River typically runs highest in January, at a median 747 cfs, and lowest in September, at 15 cfs. The highest flow on record for any single day is 11,300 cfs, in 1965.
Show the numbers
| Month | Typical (cfs) | Usual range (cfs) |
|---|---|---|
| January | 747 | 430 to 1,440 |
| February | 649 | 380 to 1,170 |
| March | 568 | 354 to 961 |
| April | 360 | 245 to 618 |
| May | 172 | 124 to 255 |
| June | 82 | 64 to 107 |
| July | 33 | 25 to 42 |
| August | 16 | 12 to 22 |
| September | 15 | 11 to 21 |
| October | 24 | 16 to 46 |
| November | 185 | 65 to 613 |
| December | 612 | 290 to 1,390 |
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 71 years of record. Statistics published by the US Geological Survey for Marys River near Philomath, OR (site 14171000). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.
Made to print
Put Marys River on your wall
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.
Embed this gauge on your site
Paste this snippet anywhere, an outfitter page, a club site, a trip report, to show Marys River's live streamflow, water level and 7-day trend. It reads the USGS gauge directly, updates itself, and links back here.
See every free widget you can put on your site, including live conditions and a 7 day forecast.
