My son and I like to walk 5 minutes down the road to fish a little pond. It's a great numbers pond. Occasional 3 and 4 pounders, but usually 1-2 pounds and less. Well, we walked down yesterday afternoon to see that the water had suddenly turned rancid, and we stopped counting at 43 dead bass, catfish, and bluegill, mostly because of the smell. It was all so sudden. We had just fished it a couple of days prior, and the fish appeared healthy and fine and the water, while weedy, was good looking.
The town took action pretty quickly. A few hours later clean up crews were down there taking out the dead fish and weeds, and some kind of pump or filter was going.
What could have happened?