Crystal Lake – 2018



Please explore our SWIMMER’S ITCH 101 tab on the top of the page if you want to learn more about swimmer’s itch.




The Current Common Merganser Count

(as of July 19)

16 Broods trapped off Crystal Lake/128 Ducklings relocated to Lake Michigan

THREE specific ways you can continue to help…..
1.important iconReport A Common Merganser NEST on Crystal Lake (CLICK HERE)

Early spring (from ice-out until May 31) is the time of year when common mergansers nest on Crystal Lake. If you see a single common merganser flying and landing on the same tree on more than one occasion, there’s probably a nest nearby. Click on the link above to report the location of a common merganser nest.

2.important iconReport A Common Merganser BROOD on Crystal Lake (CLICK HERE)

From June 1 – July 15 the single most important thing you can do to help us control swimmer’s itch is to report any common merganser broods you see on Crystal Lake (click the appropriate link above).

If you aren’t sure that the brood you saw are common mergansers, click on the link anyway and you’ll be shown pictures to help you determine their identity.

3. Report A CASE OF SWIMMER’S ITCH on Crystal Lake (CLICK HERE)

Because we removed all 14 common merganser broods off Crystal Lake last summer, we expect to see a significant reduction in the severity of swimmer’s itch cases again this year. Please use the link above to report any and all swimmer’s itch cases on Crystal Lake in 2018. Thank you.