Eurasian Watermilfoil

Eurasian watermilfoil infestation was discovered in Bay Lake in 1995. Annually, BLIA engages trained scuba divers to survey the lake, concentrating on the different locations where milfoil has been identified. Particularly, robust areas are chemically treated to control the weed each spring and fall. The Minnesota Department of Natural Resources restricts areas that may be treated. In years with excessive milfoil, BLIA has spent up to $150,000 treating this invasive species.

You can help treatment efforts by not driving through weed beds and pink-colored floating markers that indicate where milfoil has been treated.

Learn more about Eurasian watermilfoil and how to identify it »

Compare native milfoil to invasive milfoil here »