USGS Streamgage 14308000
South Umpqua River at Tiller, OR
South Umpqua River at Tiller, OR is USGS streamgage 14308000 in Oregon, monitoring river discharge in hydrologic subbasin 17100302. It drains a watershed of about 449 square miles. Discharge records at this site go back to 1910. Typical flow runs near 129.8 cfs in July and 1,291 cfs in April, with the higher of the two arriving in April.
Gauge details
- State
- Oregon
- Drainage area
- 449 sq mi
- Subbasin (HUC-8)
- 17100302
- Coordinates
- 42.9304, -122.94839
- USGS site number
- 14308000
- Records begin
- 1910-10-01 (116 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 116 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 | 400.2 | 1,282.3 | 4,980 | |
| February | 510.3 | 1,349.7 | 3,981.7 | |
| March | 584.3 | 1,399.4 | 3,359 | |
| April | 604 | 1,291 | 2,514 | |
| May | 379.7 | 884.6 | 1,918.7 | |
| June | 164.4 | 388.6 | 968.8 | |
| July | 76.7 | 129.8 | 233.2 | |
| August | 42.9 | 66.2 | 105.1 | |
| September | 37.1 | 54.4 | 108.4 | |
| October | 42.6 | 78.4 | 352.6 | |
| November | 83.2 | 432.4 | 2,224.7 | |
| December | 228.7 | 1,025.9 | 4,696.8 |
All values in cubic feet per second (cfs).