Black River at Watertown NY
USGS Site No: 04260500 • Black River • Jefferson County, NY
Black River at Watertown NY on the Black River is currently at 5,790 cfs (High — 79th percentile for this date) . Gage height: 5.40 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 | 1,460 | |
| 25th | Low threshold | 1,920 | |
| 50th (Median) | Normal (median) | 3,230 | |
| 75th | High threshold | 4,950 | |
| 95th | Very High threshold | 9,280 | Today: 5,790 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 | 6,340 | — |
| May 27, 2026 | 6,210 | — |
| May 26, 2026 | 5,480 | — |
| May 25, 2026 | 4,080 | — |
| May 24, 2026 | 2,580 | — |
| May 23, 2026 | 2,550 | — |
| May 22, 2026 | 2,620 | — |
| May 21, 2026 | 2,990 | — |
| May 20, 2026 | 3,390 | — |
| May 19, 2026 | 3,790 | — |
| May 18, 2026 | 4,360 | — |
| May 17, 2026 | 4,770 | — |
| May 16, 2026 | 4,750 | — |
| May 15, 2026 | 4,570 | — |
| Apr 21, 2026 | 9,940 | — |
| Apr 20, 2026 | 10,400 | — |
| Apr 19, 2026 | 9,970 | — |
| Apr 18, 2026 | 9,680 | — |
| Apr 17, 2026 | 9,630 | — |
| Apr 16, 2026 | 9,000 | — |
| Apr 15, 2026 | 8,410 | — |
| Apr 14, 2026 | 7,260 | — |
| Apr 13, 2026 | 7,150 | — |
| Apr 12, 2026 | 7,770 | — |
| Apr 11, 2026 | 8,600 | — |
| Apr 10, 2026 | 9,720 | — |
| Apr 9, 2026 | 11,400 | — |
| Apr 8, 2026 | 13,500 | — |
| Apr 7, 2026 | 15,700 | — |
| Apr 6, 2026 | 17,200 | — |
Station Information
- USGS Site No
- 04260500
- State
- NY
- County
- Jefferson County
- Coordinates
- 43.9858, -75.9246
- Drainage Area
- 1,864 mi²
- Datum (ft)
- 374.1
- HUC Code
- 04150101
Flood Stage Thresholds
- Action Stage
- 8.0 ft
- Flood Stage
- 10.0 ft
- Moderate Flood
- 12.0 ft
- Major Flood
- 14.0 ft
Currently 4.60 ft below flood stage.
Recent Extremes
- Max discharge
-
26,400 cfsMar 13, 2026
- Min discharge
-
820 cfsSep 15, 2025
- Days at flood stage
- 0
Computed from the local daily-values archive.
Nearby Gauges
-
Sandy Creek Near Adams NYNormal14.0 mi · 119 cfs
-
Deer River at Deer River NYUnknown17.0 mi
-
Beaver River at Croghan NYHigh26.6 mi · 695 cfs
-
North Branch Salmon River at Redfield NYLow31.1 mi · 99 cfs
-
Salmon River at Pineville NYNormal31.9 mi · 637 cfs