Tualatin River at Highway 219 Near Hillsboro, OR
USGS Site No: 14206241 • Tualatin River • Washington County, OR
Tualatin River at Highway 219 Near Hillsboro, OR on the Tualatin River is currently at 193 cfs (Normal — 54th percentile for this date) . Gage height: 2.57 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 | 0 | |
| 25th | Low threshold | 132 | |
| 50th (Median) | Normal (median) | 161 | |
| 75th | High threshold | 356 | Today: 193 cfs |
| 95th | Very High threshold | 0 |
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 | 202 | — |
| May 27, 2026 | 229 | — |
| May 26, 2026 | 229 | — |
| May 25, 2026 | 222 | — |
| May 24, 2026 | 222 | — |
| May 23, 2026 | 203 | — |
| May 22, 2026 | 192 | — |
| May 21, 2026 | 201 | — |
| May 20, 2026 | 213 | — |
| May 19, 2026 | 245 | — |
| May 18, 2026 | 287 | — |
| May 17, 2026 | 322 | — |
| May 16, 2026 | 270 | — |
| May 15, 2026 | 262 | — |
| Apr 20, 2026 | 784 | — |
| Apr 19, 2026 | 921 | — |
| Apr 18, 2026 | 1,200 | — |
| Apr 17, 2026 | 1,470 | — |
| Apr 16, 2026 | 1,590 | — |
| Apr 15, 2026 | 854 | — |
| Apr 14, 2026 | 525 | — |
| Apr 13, 2026 | 541 | — |
| Apr 12, 2026 | 606 | — |
| Apr 11, 2026 | 532 | — |
| Apr 10, 2026 | 425 | — |
| Apr 9, 2026 | 437 | — |
| Apr 8, 2026 | 460 | — |
| Apr 7, 2026 | 500 | — |
| Apr 6, 2026 | 528 | — |
| Apr 5, 2026 | 550 | — |
Station Information
- USGS Site No
- 14206241
- State
- OR
- County
- Washington County
- Coordinates
- 45.5004, -122.9909
- Drainage Area
- 462 mi²
- Datum (ft)
- 120.0
- HUC Code
- 170900100404
Recent Extremes
- Max discharge
-
3,520 cfsDec 21, 2025
- Min discharge
-
84 cfsOct 17, 2025
Computed from the local daily-values archive.
Nearby Gauges
-
Tualatin River Near Dilley, ORNormal6.7 mi · 109 cfs
-
Wapato Creek at Sw Gaston Road, at Gaston, ORVery High7.7 mi · 4 cfs
-
Scoggins Ck below Henry Hagg Lake, near Gaston, ORHigh10.4 mi · 147 cfs
-
Chicken Creek above Seasonal Trail, near Sherwood, ORLow10.9 mi · 0 cfs
-
Fanno Creek at 56th Ave, at Portland, ORNormal12.4 mi · 0 cfs