USGS Streamgage 12113350
Green River at Tukwila, WA
Green River at Tukwila, WA is USGS streamgage 12113350 in Washington, monitoring river discharge in hydrologic subbasin 17110013. It drains a watershed of about 440 square miles. Discharge records at this site go back to 1960. Typical flow runs near 549.2 cfs in July and 1,755.3 cfs in April, with the higher of the two arriving in April.
Gauge details
- State
- Washington
- Drainage area
- 440 sq mi
- Gauge elevation
- 6 ft
- Subbasin (HUC-8)
- 17110013
- Coordinates
- 47.4651, -122.24846
- USGS site number
- 12113350
- Records begin
- 1960-10-01 (66 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 24 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 | 1,015.8 | 2,024.5 | 6,484.2 | |
| February | 961.9 | 2,036.2 | 5,535 | |
| March | 961.3 | 1,604.2 | 3,555.2 | |
| April | 1,054.4 | 1,755.3 | 3,018.3 | |
| May | 768.7 | 1,573.2 | 3,251 | |
| June | 474.5 | 905.2 | 2,507.7 | |
| July | 339 | 549.2 | 1,140.5 | |
| August | 272.3 | 349.2 | 582.7 | |
| September | 259.4 | 374.8 | 795.1 | |
| October | 293.5 | 496.1 | 1,246.1 | |
| November | 490.9 | 1,148.7 | 3,263.3 | |
| December | 820.7 | 1,889.7 | 6,112.3 |
All values in cubic feet per second (cfs).
Other gauges in this subbasin
- Duwamish River at Golf Course at Tukwila, WA
- Duwamish River at E Marginal Way Br at Duwamish, WA
- Green River below Howard A Hanson Dam, WA
- Green River at Purification Plant near Palmer, WA
- Newaukum Creek near Black Diamond, WA
- Green River below Crisp Creek near Black Diamond, WA
- Big Soos Creek above Hatchery near Auburn, WA
- Green River near Auburn, WA