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Water Quality Monitoring

Overview

In 2019 water quality monitoring took place at piers and beaches around the five Yahara lakes. Volunteers measured near-shore water clarity, air and water temperature, and noted several visual observations during the monitoring season, which runs from May to September. 

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Lake Explorer Camp 2017 Group

Madison Boats owner Tyler Leeper “paddles’ the extra mile for our lakes

Tyler Leeper has a deep connection to our lakes, and an even greater investment in their health. As the owner of Madison Boats, which includes Wingra Boats, Brittingham Boats, and Marshall Boats on Lakes Mendota, Monona, and Wingra, his family business is dependent on water quality and lake health.

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2018 Annual State of the Lakes Report

2018 takeaways

  • Cyanobacteria (blue-green algae) blooms appeared in our lakes at an alarming scale, highlighting continued challenges with water quality.
    • 72% of beach closures from Memorial Day to August 20th were due to cyanobacteria blooms
    • June continues to be the biggest month for cyanobacteria blooms for the fourth year
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Ice cover tour of Madison's lakes with Wisconsin State Climatology Office

“Ice off” declaration from Wisconsin State Climatology Office

The Wisconsin State Climatology Office declared “ice off” for Lake Mendota and Lake Monona on Sunday, March 31, 2019. Lake Wingra’s “ice off” was declared on March 28, 2019. Lake Mendota recorded 86 days of ice during the winter of 2018/19, while Lake Monona had 97 days of ice and Lake Wingra had 111 days of ice cover.

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Flooded pier on Lake Mendota

Clean Lakes Alliance Statement to Dane County Lake Level Task Force

This statement was presented by Clean Lakes Alliance Executive Director James Tye to the Dane County Lake Level Task Force on March 5, 2019.

Clean Lakes Alliance applauds the leadership of the Dane County Board and the Dane County Executive in putting $12 million toward flood recovery and lake improvement projects in the 2019 budget, and in creating the Technical Work Group and task force to address recent flooding around the Yahara Chain of Lakes. We believe these initiatives help move us toward becoming a more resilient community. But we need to work together as a community to address the increasing volume of water and runoff BEFORE it enters our lakes and waterways.

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2018 Flooding

Yahara Lakes 2018 Water Quality Monitoring Results

Overview

From May to September of 2018, water quality monitoring took place at piers and beaches around the five Yahara lakes. Volunteers measured near-shore water clarity, air and water temperature, and noted several visual observations. Visual observations included presence of algal blooms (green/blue-green), floating plant debris, swimmers, waterfowl, wave intensity, and general water appearance. Volunteers report conditions on our website, Lakeforecast.org. The website displays updated data in real time.

Highlights

  • 79 near-shore and 7 offshore monitoring stations on all five Yahara lakes (Figure 1)
  • Weekly off-shore measurement of Secchi depth on all five lakes
  • Measured temperature and dissolved oxygen profiles on all five lakes (seven sites total)
  • Weekly monitoring continued at all 25 public beaches
  • 44% increase in number of condition reports from 2017 (Table 1)
  • Collected continuous near-shore temperature measurements at 17 sites on lakes Mendota, Monona, and Waubesa, and Kegonsa
  • Implemented E. coli sampling and cyanobacteria toxin testing pilots
  • Averaged 2.3 condition reports per site each week across all sites
  • Continued weekly Weekend Lake Reports with over 77,000 views on social media
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Madison FUN Lake Explorers

Connecting children with our Yahara Watershed

Grant Feature #7: Madison Friends of Urban Nature (FUN)

American author, scientist, and conservationist Aldo Leopold once said, “We abuse land because we regard it as a commodity belonging to us. When we see land as a community to which we belong, we may begin to use it with love and respect.”

Clean Lakes Alliance knows connections to the land and to our waters begin to develop in childhood. Through a Clean Lakes Grant awarded for 2018, Madison Friends of Urban Nature (FUN) is connecting families and children to nature and our Yahara Lakes. Clean Lakes Alliance contributed $1,250 to the effort, helping to expand outdoor learning opportunities that can lead to future generations of caring and knowledgeable lake stewards.

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