General information

Chemical Application: General Information The Upper Hay Lake Association feels that members have the prerogative to improve their beach and swimming areas so they can be enjoyed.  To that end, some individuals may wish to apply Copper Sulfate to control snails and thereby also control Swimmer’s itch.  Others have a weed problem and wish to apply Hydrothol 191.  Neither of these chemicals have been shown to harm a lake in any way and are approved for application by the Department of Natural Resources of Minnesota. The DNR issues permits for the application of these chemicals and requires that individuals obtain these permits prior to application.

The Association is no longer participating in the Aquatic Vegetation Permit process. You will need to work directly with the DNR on permits. If you have worked with PLM Lake and Land Management in the past, or wish to this year, you can call Kristy Hoge, Regional Administrator at 218-270-3338 Ext 3003 or email her at 

 You can also email Ken Meyer: and he will email you a copy of their contract with pricing.

Members applying their own chemicals are asked to read the instructions carefully as they may change from year to year and COMPLY strictly with the instructions.  NOTE: if you have chemicals left over from the previous year, you still need a current year’s permit!

For more information, please refer to these links:

Aquatic Plant Control:

Permits to Control Aquatic Plants:

PLM Lake and Land Management Corporation: