Excellent video! Thanks for doing this. Most of the reservoirs (flowages) we fish are relatively featureless bowls (rare to find a brush pile or stump). However, as you video suggests, there is a current flow regardless, as long as there is a dam. We know where the channels exist leading to the dams, which can be from 18' - 24' deep.
We have success fishing these channels. But the schools are quite a bit separated from one another and sometimes difficult to locate. We will certainly review this video more times and try to glean more information.
BTW, we use side pulling to follow the channel system in this res and we do find fish from 3' - 18' over these deep waters. No big concentrations of crappie at any one spot however. Thanks for the information.