The National Weather Service has issued a flood warning for the Rock River at Lake Koshkonong, adding to its earlier warning for the river downstream at Afton.

The Advanced Hydrologic Prediction Service forecasts these Rock River conditions over this week:

  • Lake Koshkonong: Approaching minor flooding levels Wednesday, expected to rise to 10.9 feet, just short of the moderate flooding stage, by the weekend.
  • Newville: 6.01 feet and climbing Wednesday morning, pre-flooding stage.
  • Afton: Minor flooding stage at 9.26 feet Wednesday morning, rising to about 10.3 feet by Sunday.

All of the Rock River in Rock County is under a slow/no-wake boat speed restriction. Lake Koshkonong is exempt from the restriction, according to a Rock County Sheriff’s Office news release.

The town of Milton has issued a slow/no-wake order on Clear Lake.

Residents of the towns of Fulton or Milton who want sandbags and sand are asked to call their respective town halls: town of Fulton at 608-868-4103, town of Milton at 608-868-2465.

Sand will be available by noon Wednesday at the Newville Park and Ride off Interstate 90/39.

The sheriff’s office asks residents to avoid traveling across high water on roads and report any immediately hazardous conditions to Rock County Communications at 608-757-2244.

All requests for sandbags and other concerns related to the current flood situation should be reported to the respective towns or through the Rock County Sheriff’s Office’s Emergency Management Bureau at 608-758-8440, the news release states. does not condone or review every comment. Read more in our Commenter Policy Agreement

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