Zebra Mussels Found in Iowa’s Big Spirit Lake

The Iowa Department of Natural Resources is watching Big Spirit Lake after a resident found a single juvenile zebra mussel attached to a rock in the southwest side of the lake on Sept. 23rd.

Biologists at the DNR’s Boone research facility also found a single larval zebra mussel in a water sample collected from Big Spirit Lake in August. The DNR collects water samples and deploys settlement samplers in lakes across the state each summer to monitor for the invasive zebra mussel.

The first zebra mussels in the Iowa Great Lake chain were discovered in the fall of 2012 and have increased in numbers since. Big Spirit Lake flows over a spillway into the rest of the Okoboji Chain.  Click on the following sentence to access the full story.

Bogenschutz says boaters and anglers can unintentionally spread zebra mussels and other aquatic invasive species if they do not take the proper precautions – clean, drain, dry – after each time out on the water.


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