Rock River at Afton water level
River gauge, Rock River, Wisconsin, United States
Right now
Below flood stage
Water level
- Flow
- 2,710 cfs
History
What this means
Water levels are unremarkable at Rock River at Afton, where the gauge shows 5.45 ft.
It is 3.55 ft below the flood stage of 9.00 ft.
It is still going down, by 0.12 ft over the past 24 hours. The 30-day range is 5.44 ft – 5.68 ft.
Fall is often low-water season on rivers, until steadier rain returns.
Judged against the official flood stage for this gauge. How to read levels
Key numbers
- Highest on record
- 13.51 ftJune 21, 2008
Paddling and fishing conditions
Most paddlers and anglers will find the river in good shape at this stage.
For reference, flood stage is 9.00 ft.
What happens at each level
- 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.
- 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.
- 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.
- 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.
- 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.
- 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.
- 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.
- 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.
- 8.50 ft
- Floodwaters spread into lowland and agricultural land adjacent to the river in the Afton and Janesville areas.
- 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.
- 5.45 ft
- Right now
Impact statements from the U.S. National Weather Service.
Highest crests on record
Chance of at least minor flooding in October to December: 19 %.
| Rank | Level | Date |
|---|---|---|
| 1 | 13.51 ft | June 21, 2008 |
| 2 | 13.05 ft | February 5, 1916 |
| 3 | 12.21 ft | January 23, 2008 |
| 4 | 12.11 ft | April 18, 2026 |
| 5 | 11.86 ft | April 5, 1979 |
| 6 | 11.84 ft | October 18, 2015 |
| 7 | 11.84 ft | April 18, 2013 |
| 8 | 11.80 ft | March 23, 1929 |
| 9 | 11.77 ft | April 10, 1959 |
| 10 | 11.50 ft | March 25, 1918 |
Weather at the gauge
Rain in the last 3 days: 0.82 in. Rain that falls upstream can take hours or days to show up at a river gauge.
Forecast: Open-Meteo
Map
Other gauges on the Rock River
| Gauge | Level | Compared with normal | 24 hours | Distance |
|---|---|---|---|---|
| Rock River at Tweedy St. at HustisfordRiver gauge, Rock River | 7.90 ft | No reference yet | −0.03 ft | 56 mi |
| Rock River near LebanonRiver gauge, Rock River | 7.09 ft | Very high | +0.16 ft | 51 mi |
| Rock River at WatertownRiver gauge, Rock River | 2.36 ft | Below flood stage | ±0 | 43 mi |
| Rock River at JeffersonRiver gauge, Rock River | 4.77 ft | Below flood stage | −0.03 ft | 30 mi |
| Rock River at Fort AtkinsonRiver gauge, Rock River | 11.55 ft | Below flood stage | −0.08 ft | 25 mi |
| Rock River at NewvilleRiver gauge, Rock River | 2.62 ft | Below flood stage | −0.11 ft | 15 mi |
| Rock River at RocktonRiver gauge, Rock River | 5.27 ft | High | −0.06 ft | 11 mi |
| Rock River at Latham ParkRiver gauge, Rock River | 5.34 ft | High | −0.05 ft | 17 mi |
| Rock River at Auburn St at RockfordRiver gauge, Rock River | 3.25 ft | Normal | −0.03 ft | 22 mi |
| Rock River above Dam at RockfordRiver gauge, Rock River | 2.67 ft | High | −0.06 ft | 24 mi |
| Rock River at ByronRiver gauge, Rock River | 7.15 ft | Normal | −0.06 ft | 35 mi |
| Rock River at DixonRiver gauge, Rock River | 9.52 ft | Normal | +0.02 ft | 57 mi |
Nearby gauges
| Gauge | Level | Compared with normal | 24 hours | Distance |
|---|---|---|---|---|
| Turtle Creek at Carvers Rock Road near ClintonRiver gauge, Turtle Creek | 3.96 ft | Below flood stage | −0.03 ft | 12 mi |
| Pecatonica River near ShirlandRiver gauge, Pecatonica River | 6.20 ft | Normal | +0.08 ft | 13 mi |
| Yahara River near FultonRiver gauge, Yahara River | 4.46 ft | Below flood stage | −0.04 ft | 16 mi |
| Badfish Creek near CooksvilleRiver gauge, Badfish Creek | 92.7 cfs | Normal | −4.5 cfs | 16 mi |
| Sugar River near BrodheadRiver gauge, Sugar River | 1.56 ft | Below flood stage | −0.20 ft | 17 mi |
| Lake Koshkonong near NewvilleLake, Lake Koshkonong | 776.29 ft | High | −0.06 ft | 18 mi |
| Piscasaw Creek near WalworthRiver gauge, Piscasaw Creek | 3.2 cfs | Normal | −0.4 cfs | 22 mi |
Questions and answers
What is flood stage for the Rock River at Afton?
The official flood stage is 9.00 ft. The level is currently 3.55 ft below it.
Is gage height the same as water depth?
No. Gage height is measured from a fixed reference point chosen by the agency, so a reading of 10 ft does not mean the river is 10 ft deep.
What is the water level of Rock River at Afton today?
On Oct 18, 2026, 09:00 PM CDT, the water level was 5.45 ft. Down 0.12 ft over the last 24 hours.
Is Rock River at Afton rising or falling?
Down 0.12 ft over the last 24 hours.
Is the level of Rock River at Afton normal?
Below flood stage. Judged against the official flood stage for this gauge.
What is the highest water level ever recorded at Rock River at Afton?
The highest level on record is 13.51 ft on June 21, 2008.
How often is this data updated?
The U.S. Geological Survey publishes a new reading every 15 minutes. This page refreshes within minutes of each update.
For specialists
Station codes, datum, parameters, data quality and downloads
- Operator
- U.S. Geological Survey
- Station code
usgs:05430500(Agency page)- Coordinates
42.61361, -89.07167(WGS84)- Vertical datum
- NAVD88
- Update interval
- every 15 minutes
- Licence
- Public domain. Data: U.S. Geological Survey (USGS), provisional data subject to revision
Published series
| Parameter | Last value | Time (UTC) | Quality |
|---|---|---|---|
| Water level | 5.45 ft | 2026-10-19 02:00 | Provisional |
| Flow | 2,710 cfs | 2026-10-19 02:00 | Provisional |
Download
Embed this gauge
Add a live card for this gauge to your website. It updates on its own and links back here.
How to cite
U.S. Geological Survey: Rock River at Afton (usgs:05430500). Accessed October 19, 2026 via Nivelmap, https://nivelmap.com/en/united-states/wisconsin/rock-river-at-afton
How we check values
Each reading is stored as published. We hold back values that jump faster than physically plausible and show the measurement time with every value.
Readings are provisional, can be delayed or wrong and are not a flood warning. Read the disclaimer