Seal of Dane County County of Dane
County Executive's Office

12 PM Tuesday Update – Dane County Flooding

August 28, 2018
Stephanie Miller 608-283-1634
County Executive




Dane County Lakes staff has been working around the clock to do what they can to mitigate additional flooding before more rain is expected this week. Their efforts have doubled the flow of the water leaving the chain of lakes. More water is now leaving the Yahara Chain than what’s entering it, allowing for levels to stabilize.



With an additional 1-2 inches expected in the next 12 hours, Dane County has continued to cut weeds and remove debris. With today’s storms, flash flooding is possible.


Overnight there has been no change for Lake Mendota, Waubesa or Kegonsa water levels. Lake Monona declined by ½ an inch. Dane County Lakes staff will continue to work around the clock to monitor lake levels and respond in real time.


Given the uncertainty in the forecast, Dane County urges residents to be vigilant and to monitor the weather and street closings before traveling.


United Way 2-1-1 – DAMAGE REPORTING

  • As of yesterday, the United Way’s 2-1-1 reported receiving more than 1400 individual reports of private property damage from Dane County.


  • Other agencies are collecting damage assessments, but 2-1-1 reporting is essential. – REPORTING IS AVAILABLE BY PHONE OR ONLINE



Remaining Road Closures & Detours

  • CTH KP from Black Earth West to CTH F (one lane closed)
  • Hwy W (CTH B to East Church Street)
  • Hwy 14 bridge west of Black Earth approaches washed out
  • CTH J (Old Military Rd to CTH S)
  • CTH G (CTH J to Marsh Lane)
  • A Detour has been set up in Sauk County detouring traffic from Hwy 14 to Hwy 60 to Hwy 12.
  • A Detour has been set up in Iowa County detouring traffic from Hwy 14 to Hwy 60 to Hwy 12.


Private Well Water Testing


If you live in a flooded area of Dane County and own a private well, your water may be in danger of contamination from pollutants carried in floodwaters. Public Health Madison & Dane County (PHMDC), is offering free and expanded private well water testing services for impacted Dane County residents.

  • PHMDC recommends well owners impacted by flooding immediately stop drinking their well water and using it for cooking unless it has been boiled for one minute. The well, and the entire plumbing system, should be disinfected. This procedure is best done by a licensed well driller or pump installer, but can also be done by well owners.
  • After disinfection and before using your well again, water should be tested for bacteria.
  • Residents with questions about well water testing, can call:
    • Public Health Madison & Dane County: (608) 242-6515
    • Wisconsin State Laboratory of Hygiene: (608) 224-6202 or (800) 442-4618
  • Free well water testing kits are now available for pick-up in Cross Plains, Mazomanie, Black Earth,  Town of Middleton, and Town of Montrose. 

State Bank of Cross Plains
1205 Main St, Cross Plains

9:00 am – 5:00 pm, Monday through Friday

Middleton Town Hall

7555 Old Sauk Rd, Verona

8:00 am – 4:00 pm, Monday through Thursday

8:00 am – 12:00pm, Friday


Black Earth Village Office

1210 Mills St, Black Earth

8:00 am – 4:30 pm, Monday through Friday


Mazomanie Village Hall

133 Crescent St, Mazomanie

7:30 am -4:00 pm, Monday through Wednesday

7:30 am – 7:00 pm, Thursday

7:30 am – 4:00 pm, Friday


Montrose Town Hall

1341 Diane Ave, Belleville

8:00 am – 4:30 pm, Monday through Thursday


Madison – Public Health Madison & Dane County Laboratory
8:00 am – 4:00 pm, Monday through Friday
City-County Building, 210 Martin Luther King Jr. Blvd., Room 516B, Madison

Madison – Public Health Madison & Dane County Environmental Health Office
7:45 am – 4:15 pm, Monday through Friday
2300 S. Park St., Suite 2022, Madison


Flood Water Health Information

  • Treat all floodwaters as contaminated. Stay out of flood and sewage waters.

o   Wait until water subsides because there are harmful bacteria and viruses in the water.

·        After water and debris has subsided, proper clean-up is important.

o   Wear rubber gloves and boots and wear eye protection to prevent contaminating yourself with sewage.

o   Wash hands thoroughly and wash clothes separately after finishing clean-up of sewage.

·        For resources and more information, visit

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