USGS Streamgage 12508990
Yakima River at Mabton, WA
Yakima River at Mabton, WA is USGS streamgage 12508990 in Washington, monitoring river discharge in hydrologic subbasin 17030003. It drains a watershed of about 5,359 square miles. Discharge records at this site go back to 1970. Typical flow runs near 1,422.6 cfs in July and 4,211 cfs in April, with the higher of the two arriving in April.
Gauge details
- State
- Washington
- Drainage area
- 5,359 sq mi
- Gauge elevation
- 648 ft
- Subbasin (HUC-8)
- 17030003
- Coordinates
- 46.23121, -119.99945
- USGS site number
- 12508990
- Records begin
- 1970-10-01 (56 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 56 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 | 1,602.3 | 3,037.4 | 7,443.2 | |
| February | 1,873.8 | 3,342.1 | 8,549.7 | |
| March | 1,994.8 | 3,898.4 | 9,183.5 | |
| April | 1,442.7 | 4,211 | 9,556.7 | |
| May | 1,551 | 4,215.2 | 10,773.5 | |
| June | 1,102.7 | 2,930.3 | 8,504 | |
| July | 798.2 | 1,422.6 | 3,160.6 | |
| August | 864.7 | 1,428.4 | 1,947.4 | |
| September | 1,054.1 | 1,639.3 | 2,134.7 | |
| October | 1,293.2 | 1,835.2 | 2,477.7 | |
| November | 1,635.3 | 2,215.3 | 4,067.3 | |
| December | 1,594.5 | 2,455.2 | 6,306.8 |
All values in cubic feet per second (cfs).