Rock River at Watertown, WI
USGS Site No: 05425500 • Rock River • Jefferson County, WI
Rock River at Watertown, WI on the Rock River is currently at 734 cfs (High — 79th percentile for this date) . Gage height: 2.59 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 | 38 | |
| 25th | Low threshold | 69 | |
| 50th (Median) | Normal (median) | 206 | |
| 75th | High threshold | 538 | |
| 95th | Very High threshold | 1,580 | Today: 734 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 | 820 | — |
| May 27, 2026 | 860 | — |
| May 26, 2026 | 948 | — |
| May 25, 2026 | 980 | — |
| May 24, 2026 | 1,040 | — |
| May 23, 2026 | 1,070 | — |
| May 22, 2026 | 1,110 | — |
| May 21, 2026 | 1,140 | — |
| May 20, 2026 | 1,220 | — |
| May 19, 2026 | 1,280 | — |
| May 18, 2026 | 1,330 | — |
| May 17, 2026 | 1,430 | — |
| May 16, 2026 | 1,470 | — |
| May 15, 2026 | 1,510 | — |
| Apr 20, 2026 | 4,040 | — |
| Apr 19, 2026 | 3,990 | — |
| Apr 18, 2026 | 4,090 | — |
| Apr 17, 2026 | 3,600 | — |
| Apr 16, 2026 | 3,810 | — |
| Apr 15, 2026 | 3,780 | — |
| Apr 14, 2026 | 2,590 | — |
| Apr 13, 2026 | 2,080 | — |
| Apr 12, 2026 | 1,830 | — |
| Apr 11, 2026 | 1,750 | — |
| Apr 10, 2026 | 1,690 | — |
| Apr 9, 2026 | 1,620 | — |
| Apr 8, 2026 | 1,620 | — |
| Apr 7, 2026 | 1,650 | — |
| Apr 6, 2026 | 1,700 | — |
| Apr 5, 2026 | 1,780 | — |
Station Information
- USGS Site No
- 05425500
- State
- WI
- County
- Jefferson County
- Coordinates
- 43.1881, -88.7261
- Drainage Area
- 969 mi²
- Datum (ft)
- 792.6
- HUC Code
- 07090001
Flood Stage Thresholds
- Action Stage
- 4.0 ft
- Flood Stage
- 5.5 ft
- Moderate Flood
- 6.0 ft
- Major Flood
- 6.5 ft
Currently 2.91 ft below flood stage.
Recent Extremes
- Max discharge
-
4,090 cfsApr 18, 2026
- Min discharge
-
117 cfsOct 15, 2025
- Days at flood stage
- 0
Computed from the local daily-values archive.
Nearby Gauges
-
Crawfish River at Milford, WIHigh8.7 mi · 468 cfs
-
Rock River Near Lebanon, WIVery High9.2 mi · 520 cfs
-
Rock River at Jefferson, WILow13.9 mi · 373 cfs
-
Bark River Near Rome, WINormal16.0 mi · 71 cfs
-
Beaverdam River at Beaver Dam, WIHigh18.7 mi · 173 cfs