Rock River at Horicon, WI
USGS Site No: 05424057 • Rock River • Dodge County, WI
Rock River at Horicon, WI on the Rock River is currently at 195 cfs (Normal — 67th percentile for this date) . Gage height: 6.34 ft. This station is at or above flood stage.
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 | 16 | |
| 25th | Low threshold | 40 | |
| 50th (Median) | Normal (median) | 107 | |
| 75th | High threshold | 233 | Today: 195 cfs |
| 95th | Very High threshold | 1,470 |
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 | 366 | — |
| May 27, 2026 | 484 | — |
| May 26, 2026 | 483 | — |
| May 25, 2026 | 475 | — |
| May 24, 2026 | 580 | — |
| May 23, 2026 | 585 | — |
| May 22, 2026 | 603 | — |
| May 21, 2026 | 660 | — |
| May 20, 2026 | 711 | — |
| May 19, 2026 | 736 | — |
| May 18, 2026 | 727 | — |
| May 17, 2026 | 702 | — |
| May 16, 2026 | 681 | — |
| May 15, 2026 | 534 | — |
| Apr 20, 2026 | 1,840 | — |
| Apr 19, 2026 | 1,830 | — |
| Apr 18, 2026 | 1,770 | — |
| Apr 17, 2026 | 1,580 | — |
| Apr 16, 2026 | 1,510 | — |
| Apr 15, 2026 | 1,300 | — |
| Apr 14, 2026 | 1,170 | — |
| Apr 13, 2026 | 1,010 | — |
| Apr 12, 2026 | 915 | — |
| Apr 11, 2026 | 982 | — |
| Apr 10, 2026 | 1,030 | — |
| Apr 9, 2026 | 1,030 | — |
| Apr 8, 2026 | 832 | — |
| Apr 7, 2026 | 979 | — |
| Apr 6, 2026 | 1,010 | — |
| Apr 5, 2026 | 964 | — |
Station Information
- USGS Site No
- 05424057
- State
- WI
- County
- Dodge County
- Coordinates
- 43.4503, -88.6322
- Drainage Area
- 456 mi²
- Datum (ft)
- 849.5
- HUC Code
- 07090001
Flood Stage Thresholds
- Action Stage
- 8.0 ft
Recent Extremes
- Max discharge
-
1,840 cfsApr 20, 2026
- Min discharge
-
2 cfsNov 6, 2025
Computed from the local daily-values archive.
Nearby Gauges
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Beaverdam River at Beaver Dam, WIHigh10.7 mi · 173 cfs
-
Rock River Near Lebanon, WIVery High13.3 mi · 520 cfs
-
South Branch Rock River at Waupun, WIHigh13.9 mi · 55 cfs
-
Rock River at Watertown, WIHigh18.7 mi · 734 cfs
-
Crawfish River at Milford, WIHigh26.6 mi · 468 cfs