Thought I would add one more twist to the story. In the past 15 years I have have visited several old WWII ammunition plants in Kansas and Nebraska that were abandoned after the war or after the Korean War. Everyone one of these plants has large open concrete sumps or pits with walls that rise well above the ground surface. Most of them still hold water and many of them have fish, Ive seen bass and blugills.
There is absolutely no chance for stocking by turtles, no chance for travel from another body of water during rains. In my opinion there is only a remote chance of human intervention as these old plants are not open to the public and some are fenced and guarded. I suppose birds could land in these old sumps, but I've never seen a bird coming, going, or on the water. I doubt a duck would land next to old buildings, but its possible. I have seen dead possums and coons that have fallen into the sumps and couldn't get out. Maybe they brought the eggs? Another twist? Regards! Ed
