Great Chazy River at Perry Mills NY
USGS Site No: 04271500 • Great Chazy River • Clinton County, NY
Great Chazy River at Perry Mills NY on the Great Chazy River is currently at 213 cfs (Normal — 62th percentile for this date) . Gage height: 2.39 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 | 43 | |
| 25th | Low threshold | 63 | |
| 50th (Median) | Normal (median) | 115 | |
| 75th | High threshold | 317 | Today: 213 cfs |
| 95th | Very High threshold | 1,040 |
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 | 227 | — |
| May 27, 2026 | 299 | — |
| May 26, 2026 | 442 | — |
| May 25, 2026 | 304 | — |
| May 24, 2026 | 203 | — |
| May 23, 2026 | 216 | — |
| May 22, 2026 | 245 | — |
| May 21, 2026 | 297 | — |
| May 20, 2026 | 391 | — |
| May 19, 2026 | 512 | — |
| May 18, 2026 | 518 | — |
| May 17, 2026 | 685 | — |
| May 16, 2026 | 1,250 | — |
| May 15, 2026 | 1,180 | — |
| Apr 21, 2026 | 523 | — |
| Apr 20, 2026 | 603 | — |
| Apr 19, 2026 | 701 | — |
| Apr 18, 2026 | 932 | — |
| Apr 17, 2026 | 1,140 | — |
| Apr 16, 2026 | 1,120 | — |
| Apr 15, 2026 | 1,340 | — |
| Apr 14, 2026 | 972 | — |
| Apr 13, 2026 | 714 | — |
| Apr 12, 2026 | 425 | — |
| Apr 11, 2026 | 465 | — |
| Apr 10, 2026 | 446 | — |
| Apr 9, 2026 | 489 | — |
| Apr 8, 2026 | 554 | — |
| Apr 7, 2026 | 725 | — |
| Apr 6, 2026 | 991 | — |
Station Information
- USGS Site No
- 04271500
- State
- NY
- County
- Clinton County
- Coordinates
- 44.9996, -73.5021
- Drainage Area
- 243 mi²
- Datum (ft)
- 164.4
- HUC Code
- 04150408
Flood Stage Thresholds
- Action Stage
- 8.0 ft
- Flood Stage
- 9.0 ft
- Moderate Flood
- 10.0 ft
- Major Flood
- 12.0 ft
Currently 6.61 ft below flood stage.
Recent Extremes
- Max discharge
-
2,450 cfsMar 12, 2026
- Min discharge
-
11 cfsSep 23, 2025
- Days at flood stage
- 0
Computed from the local daily-values archive.
Nearby Gauges
-
Little Chazy River Near Chazy NYNormal8.0 mi · 70 cfs
-
Missisquoi River at Swanton, VTLow19.1 mi · 659 cfs
-
Jewett Brook at VT 38, Near St. Albans, VTNormal19.8 mi · 1 cfs
-
Saranac River at Plattsburgh NYHigh22.0 mi · 1,110 cfs
-
Mill River at Georgia Shore Road, near St Albans, VTNormal23.2 mi · 9 cfs