River stage
Afton, Rock River
- River level
- 5.41 ft
- Status
- Below flood stage
- 7-day change
- -1.03 ft
- Recent high
- 6.59 ft
- Recent low
- 3.16 ft
Last reported 2026-10-13 | NWS AFTW3
- 30-day change
- +1.47 ft
- Average
- 4.65 ft
- Readings
- 122
- Data span
- 122 days
- Record crest
- 13.51 ft
In brief
The Rock River at Afton, WI read 5.41 ft on Oct 13, 2026, 2.59 ft below action stage. That is 1.47 ft higher than 30 days earlier.
Source: National Weather Service gauge AFTW3
River level timeline
Stage threshold profile
Highest crests on record
| Rank | Crest | Date |
|---|---|---|
| 1 | 13.51 ft | 2008-06-21 |
| 2 | 13.05 ft | 1916-02-05 |
| 3 | 12.21 ft | 2008-01-23 |
| 4 | 12.11 ft | 2026-04-18 |
| 5 | 11.86 ft | 1979-04-05 |
| 6 | 11.84 ft | 2015-10-18 |
| 7 | 11.84 ft | 2013-04-18 |
| 8 | 11.80 ft | 1929-03-23 |
Flood crests recorded at this gauge by the National Weather Service.
What happens at each level
- 8.00 ft
Water overflows the lower river banks in the Afton and Janesville areas. The river width is about 240 feet in the area of the gauge.
- 8.50 ft
Floodwaters spread into lowland and agricultural land adjacent to the river in the Afton and Janesville areas.
- 9.00 ft
Floodwaters affect property of a home on South Christian Road on the east side of the river in the Afton area. There is minor erosional flood damage to lowland and agricultural land in the Afton and Janesville areas.
- 10.00 ft
Floodwaters affect the property of a home on South Christian Road and S Christian Rd floods. Minor erosional flood damage occurs to lowland and agricultural land adjacent to the river the Afton and Janesville areas.
- 10.50 ft
Floodwaters affect Riverside Park on the north side of Janesville and South River Road on the south side of Janesville. Floodwaters affect low spots on South River Rd on the south side of Janesville. Floodwaters affect a home on South Christian Rd on the east side of the river in the Afton area. There is extensive lowland and agricultural land flooding in the Afton and Janesville areas.
- 11.10 ft
Floodwaters affect Riverside Park and a road in Riverside park on the north side of Janesville and South River Road on the south side of Janesville. Floodwaters affect low spots on South River Rd on the south side of Janesville. Floodwaters affect a home on South Christian Rd on the east side of the river in the Afton area. There is extensive lowland and agricultural land flooding in the Afton and Janesville areas.
- 11.50 ft
Water surrounds at least 2 homes near the river in the Afton area. Numerous secondary roads in the Afton area are closed to traffic. Floodwaters affect South River Road on the south side of Janesville. Traxler Park off of Memorial Drive in Janesville is flooded, including boat ramp.
- 12.20 ft
Flooded roads: South River Road near Janesville airport and near W Avalon Rd, several blocks of Joseph and Charles Streets, a portion of Main Street, and North Loop Road at Traxler Park, bleachers surrounded, the on-ramp to Memorial Drive, a portion of Riverside Drive. Peace Trail and Traxler Park off of Memorial Drive floods. Water approaches homes on N River Rd, water surrounds a home on S Christian Rd and another across the river and along W Bass Creek Rd. RR tracks near W Tripp Rd flood.
- 12.70 ft
There is widespread flooding in the Afton and Janesville areas. Numerous roads and streets are closed including South River Road on the south side of Janesville, several blocks of Joseph and Charles Streets, a portion of Main Street, and North Loop Road at Traxler Park. The on-ramp to Memorial Drive is closed. Traxler Park in Janesville is flooded and closed. The intersection of Wall Street and Main Street is flooded. Water backfills into Fisher Creek and hits RR tracks.
- 13.00 ft
There is widespread flooding in the Afton and Janesville areas. Numerous roads and streets are impacted including South River Road near Janesville airport, several blocks of Joseph and Charles Streets, and the on ramp to Memorial Drive. The intersection of Wall Street and Main Street is closed. Traxler Park in Janesville is flooded and closed. Water may impact homes on N River Rd. Water touches bottom of Grand Ave bridge.
Written by the local National Weather Service forecast office for this exact gauge.
Frequently asked questions
Is the Rock River flooding at Afton?
No. The Rock River at Afton is at 5.41 ft, 2.59 ft below action stage.
What is the flood stage at Afton?
The National Weather Service sets action stage 8 ft, minor flooding 9 ft, moderate flooding 11.1 ft and major flooding 12.2 ft.
What is the highest the Rock River has been at Afton?
The highest crest on record is 13.51 ft, on 2008-06-21.
Is the Rock River high or low right now at Afton?
At 5.41 ft it is higher than 77% of readings over the last 122 days.
Stage and flood information from the NOAA National Weather Service (gauge AFTW3); daily history from the U.S. Geological Survey (site 05430500). Last reading 2026-10-13. For flood safety decisions always follow official National Weather Service warnings.