We live in OFallon, IL, and i'm the President of this association that live on a lake. There are 24 homes on this lake, and we all contribute yearly by an annual fee for all the upkeep, etc. There are 7 aerators in the lake/pond. It is just under 7 acres and evidently the deepest part of the lake is only about 15 feet. Pond has been here for between 30-40 years. Oldest member that lives on the lake was here when it was built.
It gets rain runoff, that is what feeds it lol.

This past Saturday morning, the fish started dying. Pond had been stocked with bluegill, bass and some grass carp. OH and catfish too. They are all dead. Yesterday i spent all morning and evening collecting all the dead fish because well only a couple people were helping (that is for another story lol).
We don't know why this happened, we suspected a lake turn over. We have not treated it with anything, so we know it is not that.
Now.....there has been an increase in Geese population the last 2 years. For the last 2 years evidently the lady that would addle (sp?) the eggs has not done it, so now we have an increase. This spring i counted about 25 babies lol.

We attended a pond management seminar earlier this year put on by a local college in conjunction with the DNR. The DNR guy that spoke was so knowledgeable, and helpful. Wow.
I sort of inherited this role, and have been in the house only 3 years this fall.

So managing the lake/pond is new to me.
We have collected all we can and dug holes in the ground to bury the fish.

We just don't know what caused this. The guys that have been here the longest have said they have had about 3 or 4 fish kills in about 25-30 years. And that every time it happens they just go around and collect the fish and bury them.

I'm wondering if the overly populated geese and the poop they have, have contributed to the biology of the lake.
Let me post a couple of pictures of the dead fish we pulled out. Even a few grass carp, and some really large catfish (about 8-10lbs i bet).

In the mean time, i'm searching through this forum to help educate myself and us that live on the lake so that we can take care of it.

Thanks for listening.