USGS Streamgage 14186700
South Santiam River at Foster, OR
South Santiam River at Foster, OR is USGS streamgage 14186700 in Oregon, monitoring river discharge in hydrologic subbasin 17090006. It sits on the South Santiam River, alongside 5 other gauges Rivermatics tracks on the same river. It drains a watershed of about 493 square miles. Discharge records at this site go back to 1966. Typical flow runs near 677.7 cfs in July and 1,299.9 cfs in April, with the higher of the two arriving in April.
Gauge details
- State
- Oregon
- Drainage area
- 493 sq mi
- Subbasin (HUC-8)
- 17090006
- Coordinates
- 44.41475, -122.67344
- USGS site number
- 14186700
- Records begin
- 1966-10-01 (60 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 7 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 | — | 5,381.9 | — | |
| February | — | 3,042.1 | — | |
| March | — | 1,604.3 | — | |
| April | — | 1,299.9 | — | |
| May | — | 1,715.9 | — | |
| June | — | 974.3 | — | |
| July | — | 677.7 | — | |
| August | — | 970.1 | — | |
| September | — | 1,631.7 | — | |
| October | — | 1,538 | — | |
| November | — | 3,333.3 | — | |
| December | — | 4,722.3 | — |
All values in cubic feet per second (cfs).
Common questions
- When does South Santiam River at Foster, OR normally run highest?
- January, on the long-term record. The median daily flow that month is about 5,381.9 cfs, against 677.7 cfs in July, the lowest month. These are historical normals for the date, not a forecast and not today's reading.
- How long has South Santiam River at Foster, OR been measured?
- Discharge records at USGS site 14186700 begin in 1966, about 60 years, covering roughly 87 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
- Where is South Santiam River at Foster, OR?
- The gauge sits at 44.41475, -122.67344, in Oregon, in hydrologic subbasin 17090006, draining roughly 493 square miles.
- Can I use South Santiam River at Foster, OR data for flood or safety decisions?
- No. Rivermatics provides estimates, not guarantees, and the readings and forecasts here may be delayed, inaccurate, or wrong. Do not use them for navigation or for any safety, rescue, or emergency decision. Check the National Weather Service and USGS directly, and use your own judgment.
Upstream and downstream on the South Santiam River
Every gauge Rivermatics tracks on this river, ordered by drainage area — upstream first. See the South Santiam River in full.
- South Santiam River at Upper Soda, OR 42 sq mi
- South Santiam River below Cascadia, OR 174 sq mi
- South Santiam River at Foster, OR this page
- South Santiam River near Foster, OR 557 sq mi
- South Santiam River at Waterloo, OR 640 sq mi
- South Santiam River at Lebanon, OR 687 sq mi