USGS Streamgage 14308990
Cow Creek above Galesville Reservoir, near Azalea, OR
Cow Creek above Galesville Reservoir, near Azalea, OR is USGS streamgage 14308990 in Oregon, monitoring river discharge in hydrologic subbasin 17100302. It drains a watershed of about 65 square miles. Discharge records at this site go back to 1985. Typical flow runs near 12.8 cfs in July and 91.6 cfs in April, with the higher of the two arriving in April.
Gauge details
- State
- Oregon
- Drainage area
- 65 sq mi
- Subbasin (HUC-8)
- 17100302
- Coordinates
- 42.82318, -123.12589
- USGS site number
- 14308990
- Records begin
- 1985-10-01 (41 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 41 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 | 31.1 | 112.9 | 482.1 | |
| February | 36.4 | 114.6 | 411.3 | |
| March | 33.5 | 131.6 | 344.6 | |
| April | 34.5 | 91.6 | 217.8 | |
| May | 20.5 | 50.2 | 123.2 | |
| June | 12.8 | 24.5 | 66.3 | |
| July | 7.4 | 12.8 | 23.5 | |
| August | 5.6 | 8.7 | 14.5 | |
| September | 5.3 | 8.1 | 13.5 | |
| October | 6.6 | 10.5 | 23.8 | |
| November | 11 | 21.5 | 89 | |
| December | 16.1 | 54 | 379.4 |
All values in cubic feet per second (cfs).