Green River Below Howard at Hanson Dam, WA
USGS Site No: 12105900 • Green River • King County, WA
Green River Below Howard at Hanson Dam, WA on the Green River is currently at 413 cfs (Normal — 34th percentile for this date) . Gage height: 4.77 ft.
Reading from
Historical Percentile Comparison
Today's discharge compared to the long-term record for October 28 at this station. Percentile rank shows what fraction of historical years had lower flow on this date.
| Percentile | Label | CFS Threshold | Today's Flow |
|---|---|---|---|
| 10th | Very Low threshold | 237 | |
| 25th | Low threshold | 346 | |
| 50th (Median) | Normal (median) | 531 | Today: 413 cfs |
| 75th | High threshold | 1,110 | |
| 95th | Very High threshold | 1,990 |
30-Day Hydrograph
Recent discharge plotted against the historical 10th–95th percentile envelope for the same calendar days. Source: USGS daily values + long-term statistics.
30-Day Flow History
| Date | Discharge (CFS) | Gage Ht (ft) |
|---|---|---|
| May 28, 2026 | 423 | — |
| May 27, 2026 | 432 | — |
| May 26, 2026 | 511 | — |
| May 25, 2026 | 550 | — |
| May 24, 2026 | 550 | — |
| May 23, 2026 | 550 | — |
| May 22, 2026 | 596 | — |
| May 21, 2026 | 625 | — |
| May 20, 2026 | 779 | — |
| May 19, 2026 | 874 | — |
| May 18, 2026 | 876 | — |
| May 17, 2026 | 826 | — |
| May 16, 2026 | 704 | — |
| May 15, 2026 | 640 | — |
| Apr 20, 2026 | 769 | — |
| Apr 19, 2026 | 736 | — |
| Apr 18, 2026 | 734 | — |
| Apr 17, 2026 | 792 | — |
| Apr 16, 2026 | 789 | — |
| Apr 14, 2026 | 718 | — |
| Apr 13, 2026 | 718 | — |
| Apr 12, 2026 | 773 | — |
| Apr 11, 2026 | 840 | — |
| Apr 10, 2026 | 889 | — |
| Apr 9, 2026 | 905 | — |
| Apr 8, 2026 | 967 | — |
| Apr 7, 2026 | 1,010 | — |
| Apr 6, 2026 | 941 | — |
| Apr 5, 2026 | 901 | — |
| Apr 4, 2026 | 899 | — |
Station Information
- USGS Site No
- 12105900
- State
- WA
- County
- King County
- Coordinates
- 47.2837, -121.7979
- Drainage Area
- 221 mi²
- Datum (ft)
- 990.0
- HUC Code
- 17110013
Recent Extremes
- Max discharge
-
9,420 cfsDec 13, 2025
- Min discharge
-
220 cfsOct 19, 2025
Computed from the local daily-values archive.
Nearby Gauges
-
Green River at Purification Plant Near Palmer, WANormal2.9 mi · 338 cfs
-
White River Below Clearwater River near Buckley, WAUnknown9.9 mi · 0 cfs
-
Clearwater River Near Buckley, WANormal10.8 mi · 60 cfs
-
White River Near Buckley, WANormal11.6 mi · 819 cfs
-
Greenwater River at Greenwater, WAHigh11.8 mi · 159 cfs