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Lake Aerators - December 2025

Rosemount-Apple Valley-Eagan Public SchoolsMonday, January 12, 2026
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[0:00] Today we are out installing airators out [0:01] at Lake Farquar. So we install airators [0:03] on multiple different lakes just to help [0:05] sustain fish [music] populations. So the [0:07] airator actually creates an open water [0:08] hole. The airator kind of gets some [0:10] bubbles moving and then that helps us [0:12] sustain the fish populations that we [0:14] want [music] which help eat those bad [0:16] fish. So the three lakes that we do [0:18] operate air raators on are Alamagnet, [0:20] Farquar, [music] and Scout Lake. So, [0:22] because these lakes are shallow, we want [0:24] to ensure that we're keeping those [0:26] oxygen levels up so that those good fish [0:27] can survive and we don't get a winter [0:29] fish kill. So, in order to operate an [0:31] airator on the lake, we have [music] to [0:32] get a Minnesota DNR permit. And that [0:35] requires us to put up thin ice signs [0:36] around the lake. [music] And those signs [0:38] have to be about 100 ft apart. Some of [0:41] the signs will be on shore and some of [0:42] them will actually be on the [music] [0:44] lake with safety cones that we use slush [0:46] from the lake to actually freeze them [0:47] in. And then once the hole is cut, we [0:50] put the airator in and let it do its [0:51] thing. The aators will operate until [0:54] mid-March, but it's totally dependent on [0:56] how the winter goes.