rcrowell I don't have a pond but have fished many private ponds and some had plenty crappie some had none the ones that had plenty crappie had deep water over 15 feet.Other ponds the owners told me they stocked crappie in them but never produced any and they never saw any fish kills to speak of a reason for never seeing a crappie come from it. But these ponds were shallow about 6 to 7 feet . and had plenty bass in them maybe the bass ate the crappie I don't know . I am sure that if you called the wildLife and fisheries they could point you in the right direction.Good luck.