Johnson Creek at Milwaukie, OR
USGS Site No: 14211550 • Johnson Creek • Clackamas County, OR
Johnson Creek at Milwaukie, OR on the Johnson Creek is currently at 21 cfs (Low — 24th percentile for this date) . Gage height: 23.79 ft.
Reading from
Historical Percentile Comparison
Today's discharge compared to the long-term record for June 11 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 | 15 | |
| 25th | Low threshold | 21 | Today: 21 cfs |
| 50th (Median) | Normal (median) | 30 | |
| 75th | High threshold | 40 | |
| 95th | Very High threshold | 314 |
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 | 21 | — |
| May 27, 2026 | 21 | — |
| May 26, 2026 | 24 | — |
| May 25, 2026 | 21 | — |
| May 24, 2026 | 20 | — |
| May 23, 2026 | 20 | — |
| May 22, 2026 | 21 | — |
| May 21, 2026 | 21 | — |
| May 20, 2026 | 21 | — |
| May 19, 2026 | 22 | — |
| May 18, 2026 | 25 | — |
| May 17, 2026 | 30 | — |
| May 16, 2026 | 25 | — |
| May 15, 2026 | 23 | — |
| Apr 20, 2026 | 48 | — |
| Apr 19, 2026 | 55 | — |
| Apr 18, 2026 | 70 | — |
| Apr 17, 2026 | 85 | — |
| Apr 16, 2026 | 117 | — |
| Apr 15, 2026 | 127 | — |
| Apr 14, 2026 | 59 | — |
| Apr 13, 2026 | 68 | — |
| Apr 12, 2026 | 65 | — |
| Apr 11, 2026 | 81 | — |
| Apr 10, 2026 | 45 | — |
| Apr 9, 2026 | 46 | — |
| Apr 8, 2026 | 49 | — |
| Apr 7, 2026 | 50 | — |
| Apr 6, 2026 | 53 | — |
| Apr 5, 2026 | 46 | — |
Station Information
- USGS Site No
- 14211550
- State
- OR
- County
- Clackamas County
- Coordinates
- 45.4529, -122.6431
- Drainage Area
- 53 mi²
- Datum (ft)
- 0.0
- HUC Code
- 17090012
Flood Stage Thresholds
- Action Stage
- 29.0 ft
- Flood Stage
- 30.3 ft
Currently 6.51 ft below flood stage.
Recent Extremes
- Max discharge
-
1,410 cfsDec 19, 2025
- Min discharge
-
18 cfsAug 14, 2025
- Days at flood stage
- 0
Computed from the local daily-values archive.
Nearby Gauges
-
Willamette River at Portland, ORVery Low4.6 mi · -2,640 cfs
-
Fanno Creek at 56th Ave, at Portland, ORNormal5.1 mi · 0 cfs
-
Fanno Creek at Durham, ORNormal6.4 mi · 7 cfs
-
Tualatin River at West Linn, ORNormal7.2 mi · 329 cfs
-
Chicken Creek above Seasonal Trail, near Sherwood, ORVery High10.5 mi · 0 cfs