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2018 Flooding

Yahara Lakes Water Quality Monitoring – 2018 Results

Overview

From May to September, volunteers at piers and beaches around the five Yahara lakes 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 were asked to log condition reports at a twice weekly minimum on our website, Lakeforecast.org, where all data are updated 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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FOLKS Leaf Vacuum

Volunteers use leaf vacuums to protect Lake Kegonsa

A partnership toward leaf management and lake health in the Yahara River Watershed

Clean Lakes Alliance is excited to partner with the Friends of Lake Kegonsa Society (FOLKS) for one of our 2018 Clean Lakes Grants. FOLKS is a non-profit organization working to protect the environment and recreation of Lake Kegonsa and its surroundings.

Leaf management in the Yahara River Watershed is an important step toward creating healthy lakes. By following effective leaf practices, we can reduce the amount of phosphorus reaching our waters. Phosphorus is a naturally occurring element found in leaves, dirt, manure, and other organic matter and is the root cause of water quality problems in the region. When excessive amounts enter our lakes, phosphorus can fuel toxic cyanobacteria (blue-green algae) growth which can harm people and animals.

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