USGS Streamgage 14171000
Marys River near Philomath, OR
Marys River near Philomath, OR is USGS streamgage 14171000 in Oregon, monitoring river discharge in hydrologic subbasin 17090003. It drains a watershed of about 159 square miles. Discharge records at this site go back to 1940. Typical flow runs near 33.8 cfs in July and 365.4 cfs in April, with the higher of the two arriving in April.
Gauge details
- State
- Oregon
- Drainage area
- 159 sq mi
- Subbasin (HUC-8)
- 17090003
- Coordinates
- 44.525, -123.334
- USGS site number
- 14171000
- Records begin
- 1940-10-01 (86 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 86 years of data), averaged within each month. These describe the historical normal range — they are not a forecast and not today's reading.
| Month | Low p10 | Typical p50 | High p90 | Range |
|---|---|---|---|---|
| January | 253.7 | 777.9 | 2,553.5 | |
| February | 250.6 | 667.5 | 2,194.8 | |
| March | 238.1 | 578.3 | 1,628.7 | |
| April | 190.5 | 365.4 | 921.7 | |
| May | 104.6 | 171 | 405.9 | |
| June | 52.2 | 81.4 | 157.4 | |
| July | 21 | 33.8 | 58.5 | |
| August | 8.9 | 16.3 | 29.5 | |
| September | 8.2 | 15.4 | 34.2 | |
| October | 13.6 | 29 | 128.8 | |
| November | 41.2 | 212.2 | 1,092.5 | |
| December | 153.1 | 656.1 | 2,340.3 |
All values in cubic feet per second (cfs).