Chagrin River at Willoughby OH
USGS Site No: 04209000 • Chagrin River • Lake County, OH
Chagrin River at Willoughby OH on the Chagrin River is currently at 165 cfs (Normal — 58th percentile for this date) . Gage height: 3.54 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 | 36 | |
| 25th | Low threshold | 66 | |
| 50th (Median) | Normal (median) | 120 | |
| 75th | High threshold | 266 | Today: 165 cfs |
| 95th | Very High threshold | 910 |
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 | 216 | — |
| May 27, 2026 | 273 | — |
| May 26, 2026 | 377 | — |
| May 25, 2026 | 560 | — |
| May 24, 2026 | 738 | — |
| May 23, 2026 | 823 | — |
| May 22, 2026 | 219 | — |
| May 21, 2026 | 296 | — |
| May 20, 2026 | 386 | — |
| May 19, 2026 | 221 | — |
| May 18, 2026 | 262 | — |
| May 17, 2026 | 335 | — |
| May 16, 2026 | 289 | — |
| May 15, 2026 | 291 | — |
| Apr 21, 2026 | 448 | — |
| Apr 20, 2026 | 608 | — |
| Apr 19, 2026 | 862 | — |
| Apr 18, 2026 | 673 | — |
| Apr 17, 2026 | 870 | — |
| Apr 16, 2026 | 1,350 | — |
| Apr 15, 2026 | 588 | — |
| Apr 14, 2026 | 456 | — |
| Apr 13, 2026 | 332 | — |
| Apr 12, 2026 | 385 | — |
| Apr 11, 2026 | 543 | — |
| Apr 10, 2026 | 381 | — |
| Apr 9, 2026 | 370 | — |
| Apr 8, 2026 | 437 | — |
| Apr 7, 2026 | 569 | — |
| Apr 6, 2026 | 838 | — |
Station Information
- USGS Site No
- 04209000
- State
- OH
- County
- Lake County
- Coordinates
- 41.6309, -81.4034
- Drainage Area
- 246 mi²
- Datum (ft)
- 583.0
- HUC Code
- 04110003
Flood Stage Thresholds
- Action Stage
- 9.0 ft
- Flood Stage
- 12.0 ft
- Moderate Flood
- 14.0 ft
- Major Flood
- 16.0 ft
Currently 8.46 ft below flood stage.
Recent Extremes
- Max discharge
-
6,960 cfsApr 1, 2026
- Min discharge
-
34 cfsSep 18, 2025
- Days at flood stage
- 0
Computed from the local daily-values archive.
Nearby Gauges
-
East Branch Euclid Creek at Richmond Heights OHUnknown6.1 mi · 0 cfs
-
Unnamed Tributary To Chagrin River at Mayfield Village OHUnknown6.5 mi · 0 cfs
-
Euclid Creek at Cleveland OHLow8.7 mi · 10 cfs
-
Grand River Near Painesville OHNormal10.9 mi · 358 cfs
-
Unnamed Tributary To Chagrin River at Pepper Pike OHUnknown11.2 mi · 0 cfs