About 4 years ago I built a One acre pond 12 foot deep with a concrete sea wall on one side and ripraped the dam on the other side. The sea wall side starts at 4 feet deep for about 8 feet out then drops off 12 feet deep. This pond is about 100 feet from my house and supplies the heating and cooling to my house and shop thru geothermal. There is over 3000 feet of tubing that goes to my house and 4000 feet to my shop.
I designed it so all the rain from the house, shop, driveways go into the pond underground thru 8 inch pipes and those pipes house the 2" lines back to the shop and house. It is extremely efficient.

When I stocked it with CC,RE,LB,and some HSB I also installed an aerator system and an auto feeder. After 3 years of giving CC away I am still overrun with CC of all sizes from 8 to 10 lbs to thousands of CC minnows.

I was told I apparently made an excellent spanning bed for CC. How may times do CC span each year? It seems like every channel cat is full of eggs. How do I bring this under control?

The pond stays full and has a backup well to keep it full because it is the heating and cooling to my house and shop. The coldest it gets in the winter at the bottom is 45 degrees according to the geothermal gauges.

Any Ideas would be appreciated. The water on top at times just swarms with thousands of minnows all over. What problems can occur if I dont bring this under control?