USGS Streamgage 12447390
Andrews Creek near Mazama, WA
Andrews Creek near Mazama, WA is USGS streamgage 12447390 in Washington, monitoring river discharge in hydrologic subbasin 17020008. It drains a watershed of about 22 square miles. Discharge records at this site go back to 1968. Typical flow runs near 31.8 cfs in July and 15.7 cfs in April, with the higher of the two arriving in July.
Gauge details
- State
- Washington
- Drainage area
- 22 sq mi
- Gauge elevation
- 4,299 ft
- Subbasin (HUC-8)
- 17020008
- Coordinates
- 48.82287, -120.1459
- USGS site number
- 12447390
- Records begin
- 1968-06-01 (58 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 58 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 | 2.4 | 4.2 | 8.5 | |
| February | 2.2 | 4.2 | 7.9 | |
| March | 2.3 | 4.5 | 10.5 | |
| April | 4.8 | 15.7 | 63.7 | |
| May | 42.4 | 112 | 256.2 | |
| June | 47.9 | 106.4 | 260.7 | |
| July | 14.3 | 31.8 | 84.8 | |
| August | 5.3 | 10.4 | 21.8 | |
| September | 3.4 | 6.4 | 14.1 | |
| October | 3.4 | 5.8 | 14.2 | |
| November | 3.3 | 5.9 | 15.9 | |
| December | 2.8 | 4.9 | 11 |
All values in cubic feet per second (cfs).