Flood Warning issued April 26 at 4:55AM CDT by NWS Milwaukee/Sullivan WI
Issue date: 2026-04-26T09:55+00:00
...The Flood Warning continues for the following rivers in Wisconsin...Illinois... Rock River At Newville affecting Rock County. Rock River Near Lake Koshkonong affecting Rock and Jefferson Counties. Rock River At Fort Atkinson affecting Jefferson County. Rock River At Afton affecting Rock and Winnebago Counties. Rock River At Jefferson affecting Jefferson County. ROCK RIVER near LEBANON-3 E-HWY MM BRIDGE affecting Dodge County. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Rock River at Afton. * WHEN...Until further notice. * IMPACTS...At 11.1 feet, 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. * ADDITIONAL DETAILS... - At 4:00 AM CDT Sunday the stage was 10.7 feet. - Bankfull stage is 8.0 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 4:00 AM CDT Sunday was 10.8 feet. - Forecast...The river is expected to rise to a crest of 10.8 feet this morning. - Flood stage is 9.0 feet. - Flood History...This crest compares to a previous crest of 10.8 feet on 08/26/1940. - http://www.weather.gov/safety/flood
Flood Warning issued April 26 at 4:55AM CDT until May 2 at 7:00PM CDT by NWS Milwaukee/Sullivan WI
Issue date: 2026-04-26T09:55+00:00
...The Flood Warning continues for the following rivers in Wisconsin...Illinois... Rock River At Newville affecting Rock County. Rock River Near Lake Koshkonong affecting Rock and Jefferson Counties. Rock River At Fort Atkinson affecting Jefferson County. Rock River At Afton affecting Rock and Winnebago Counties. Rock River At Jefferson affecting Jefferson County. ROCK RIVER near LEBANON-3 E-HWY MM BRIDGE affecting Dodge County. * WHAT...Moderate flooding is occurring and moderate flooding is forecast. * WHERE...Rock River near Lake Koshkonong. * WHEN...Until Saturday evening. * IMPACTS...At 11.3 feet, There is knee-deep water over Blackhawk Island Road. Lamp Road on west side of river also becomes flooded. Lake Koshkonong merges with Mud Lake to the east of Lake Koshkonong. * ADDITIONAL DETAILS... - At 4:00 AM CDT Sunday the stage was 11.3 feet. - Bankfull stage is 9.0 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 4:00 AM CDT Sunday was 11.4 feet. - Forecast...The river is expected to fall below flood stage early Saturday afternoon and continue falling to 9.9 feet Saturday evening. - Flood stage is 10.0 feet. - Flood History...This crest compares to a previous crest of 11.4 feet on 03/29/2009. - http://www.weather.gov/safety/flood
