Aquatic Plant Management in 2017

Blue-Green Algae

In 2016 the Special Projects Committee investigated the levels of harmful cyanobacteria (blue-green algae) in several areas of the waterway. The highest level was found in Waterford Lake. Samples were collected three times this summer in order to apply for a grant from the DNR to cover the cost of abatement in that area. The results of the 2017 sampling are summarized below. You can view the full 2017 Water Quality Test Results report for more detail. The report is located on the Special Projects committee page.

Waterford Lake

  • June 21 – 13,700 cells/mL (This is significantly less than last year’s highs of nearly 110,000 cells/mL, but is still in the low end of the moderate risk range of 10,000-100,000 cells/mL.)
  • July 20 – 13,900 cells/mL
  • August 30 – 300,000 cells/mL (This level is extremely high risk. Swimming is not recommended and caution should be exercised to keep pets away from the water.)
  • September 13 – 200,000 cells/mL

Elm Island Bay

  • June 21 – 0 cells/mL
  • July 20 – 0 cells/mL
  • August 30 – 0 cells/mL
  • September 13 – 0 cells/mL

Southeast Bay of Tichigan Lake

  • June 21 – 0 cells/mL
  • July 20 – 0 cells/mL
  • August 30 – 22,200 cells/mL
  • September 13 – 11,800 cells/mL

Northeast Bay of Tichigan Lake

  • June 21 – <40 cells/mL
  • July 20 – <40 cells/mL
  • August 30 – 600 cells/mL
  • September 13 – 33,600 cells/mL

Navigational Treatment – July 21st

Our treatment provider, Wisconsin Lake and Ponds Resources, was out on the water again on July 21st. The map showing the areas treated is below.

Navigational Treatment – June 21st and June 26th

Our treatment provider, Wisconsin Lake and Ponds Resources, was out on the water again June 21st and 26th to treat for Navigational Access. Normally they cover the whole waterway in one day, but due to the unusually high growth this season they had to return to complete the treatment. The maps showing the areas treated are below.

Navigational Treatment – May 22nd

The first navigational treatment of the season was completed was completed on May 22nd. We treated approximately 12.5 acres. Interactive map shown below.

Aquatic Invasive Species Treatment Completed

The 2017 treatment for Aquatic Invasive Species (AIS) was completed the first week in May. Areas to be treated are identified by surveying the waterway to identify where AIS is present. These maps are reviewed by the WDNR and we treat all areas that we get approval for and our budget allows. Some areas were not treated as local residents wished to ‘opt out’. The map of the treated areas can be seen here.