Winter Aeration 2009-present

The SRRWD purchased two aerators in 2005, but didn't need to install them until 2009.  The purpose of aeration in lake management is to increase the dissolved oxygen content of the water. Aeration can increase fish and other aquatic animal habitat and prevent winter fish kills. The District’s impeller-aspirator systems consist of an impeller driven electric motor that sits in the water and is held up by an assembly of floats. Aeration takes place thought air bubble/water contact at the agitated lake surface.

The District’s aerators are units connect to electrical power on shore and are dropped through a hole in the ice. The District has an Emergency Use Permit to use the aerators if oxygen levels fall below 5 milligrams per liter.


© 2015 Shell Rock River Watershed District, 305 S 1st Avenue, Albert Lea, MN 56007