Williamson River below Sprague River near Chiloquin,or
USGS Site No: 11502500 • Williamson River • Klamath County, OR
Williamson River below Sprague River near Chiloquin,or on the Williamson River is currently at 663 cfs (Normal — 63th percentile for this date) . Gage height: 3.67 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 | 547 | |
| 25th | Low threshold | 582 | |
| 50th (Median) | Normal (median) | 618 | |
| 75th | High threshold | 707 | Today: 663 cfs |
| 95th | Very High threshold | 950 |
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 | 588 | — |
| May 27, 2026 | 561 | — |
| May 26, 2026 | 557 | — |
| May 25, 2026 | 558 | — |
| May 24, 2026 | 560 | — |
| May 23, 2026 | 563 | — |
| May 22, 2026 | 566 | — |
| May 21, 2026 | 567 | — |
| May 20, 2026 | 563 | — |
| May 19, 2026 | 563 | — |
| May 18, 2026 | 563 | — |
| May 17, 2026 | 567 | — |
| May 16, 2026 | 565 | — |
| May 15, 2026 | 574 | — |
| Apr 20, 2026 | 781 | — |
| Apr 19, 2026 | 799 | — |
| Apr 18, 2026 | 799 | — |
| Apr 17, 2026 | 799 | — |
| Apr 16, 2026 | 808 | — |
| Apr 15, 2026 | 818 | — |
| Apr 14, 2026 | 809 | — |
| Apr 13, 2026 | 806 | — |
| Apr 12, 2026 | 806 | — |
| Apr 11, 2026 | 810 | — |
| Apr 10, 2026 | 820 | — |
| Apr 9, 2026 | 830 | — |
| Apr 8, 2026 | 841 | — |
| Apr 7, 2026 | 866 | — |
| Apr 6, 2026 | 905 | — |
| Apr 5, 2026 | 944 | — |
Station Information
- USGS Site No
- 11502500
- State
- OR
- County
- Klamath County
- Coordinates
- 42.5644, -121.8797
- Drainage Area
- 3,030 mi²
- Datum (ft)
- 4,148.5
- HUC Code
- 18010201
Flood Stage Thresholds
- Action Stage
- 8.0 ft
- Flood Stage
- 9.0 ft
- Moderate Flood
- 10.0 ft
- Major Flood
- 11.0 ft
Currently 5.33 ft below flood stage.
Recent Extremes
- Max discharge
-
3,580 cfsApr 22, 2025
- Min discharge
-
551 cfsAug 15, 2025
- Days at flood stage
- 0
Computed from the local daily-values archive.
Nearby Gauges
-
Sprague River Near Chiloquin, ORNormal2.1 mi · 299 cfs
-
Wood River Near Klamath Agency, ORVery High3.4 mi · 488 cfs
-
Sevenmile Cnl at Dike Road Branch, near Klamath Agency, ORVery High4.8 mi · 163 cfs
-
Fourmile Canal Near Klamath Agency, ORVery High8.8 mi · 56 cfs
-
Williamson River Near Klamath Agency, ORNormal12.3 mi · 0 cfs