Clarion River at Johnsonburg, PA
USGS Site No: 03028500 • Clarion River • Elk County, PA
Clarion River at Johnsonburg, PA on the Clarion River is currently at 374 cfs (High — 76th percentile for this date) . Gage height: 2.54 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 | 97 | |
| 25th | Low threshold | 132 | |
| 50th (Median) | Normal (median) | 213 | |
| 75th | High threshold | 342 | |
| 95th | Very High threshold | 851 | Today: 374 cfs |
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 | 451 | — |
| May 27, 2026 | 526 | — |
| May 26, 2026 | 605 | — |
| May 25, 2026 | 763 | — |
| May 24, 2026 | 516 | — |
| May 23, 2026 | 546 | — |
| May 22, 2026 | 345 | — |
| May 21, 2026 | 379 | — |
| May 20, 2026 | 416 | — |
| May 19, 2026 | 432 | — |
| May 18, 2026 | 465 | — |
| May 17, 2026 | 507 | — |
| May 16, 2026 | 538 | — |
| May 15, 2026 | 592 | — |
| Apr 21, 2026 | 464 | — |
| Apr 20, 2026 | 543 | — |
| Apr 19, 2026 | 704 | — |
| Apr 18, 2026 | 651 | — |
| Apr 17, 2026 | 763 | — |
| Apr 16, 2026 | 910 | — |
| Apr 15, 2026 | 455 | — |
| Apr 14, 2026 | 291 | — |
| Apr 13, 2026 | 257 | — |
| Apr 12, 2026 | 277 | — |
| Apr 11, 2026 | 324 | — |
| Apr 10, 2026 | 353 | — |
| Apr 9, 2026 | 402 | — |
| Apr 8, 2026 | 483 | — |
| Apr 7, 2026 | 600 | — |
| Apr 6, 2026 | 707 | — |
Station Information
- USGS Site No
- 03028500
- State
- PA
- County
- Elk County
- Coordinates
- 41.4862, -78.6784
- Drainage Area
- 204 mi²
- Datum (ft)
- 1,423.0
- HUC Code
- 05010005
Flood Stage Thresholds
- Action Stage
- 5.0 ft
- Flood Stage
- 7.0 ft
- Moderate Flood
- 9.0 ft
- Major Flood
- 10.0 ft
Currently 4.46 ft below flood stage.
Recent Extremes
- Max discharge
-
1,580 cfsMar 6, 2026
- Min discharge
-
103 cfsDec 8, 2025
- Days at flood stage
- 0
Computed from the local daily-values archive.
Nearby Gauges
-
Clarion River at Ridgway, PAVery High5.4 mi · 632 cfs
-
West Branch Clarion River at Wilcox, PANormal6.2 mi · 97 cfs
-
Eb Clarion River at Eb Clarion River Dam, PANormal6.3 mi · 172 cfs
-
Sevenmile Run Near Rasselas, PANormal11.3 mi · 7 cfs
- Unknown