Doug -- your initial post prompted on additional thought. Just speaking in general, largemouth bass tend to resist outflow currents, while black crappies tend to be attracted to outflows. Now, I'm not trying to say this too "strongly" -- certainly when you have a gulley-washer, everything (all species) can end up downstream. However, in normal pond operations, I stick by my statement.
We managed a 3-acre pond for about 6 years with the largemouth bass-black crappie combination. What was unique was that the next pond downhill was used for walleye culture. Every spring, walleye fry were stocked into it, and every fall it was drained to harvest the large fall fingerlings. So, I had a 6-year test of the fish movement theory! :-) Not once in 6 years did we find a single largemouth bass in the culture pond. However, we always found at least a few black crappies, and usually we found both adults and that year's spawn (the age-0 fish).
