Thank you DadinAK! I think on a microscopic and chemical level there are differences in lakes, ponds, etc even in a same or general area. Part of that includes soil content, sediment, silt, clay deposits, gravel beds, etc. It does affect the oxygen levels, pH, sediment type, organism type, algae, under water grass and even how a lakes freezes. Especially, because the lake is in a state of hibernation under ice. I am not sure how significant it will be to the average person, like me, but if Fish and Game is stocking it they have tremendous data on the lake. Each lake would be unique and before they dump thousands of dollars of fish into any body of water, they have to make certain it is ideal for the fish. :twocents: But, I am not an expert...just someone who grew up in the mountains...