I am guessing that spotted bass and bluegill would outcompete SMB, but perhaps the SMB would establish in the creek and be reintroduced during flooding events. Having a pond that gets "stocked" by a creek does introduce a "fun factor" in that you may get surprised by what you catch. Embracing this reality may be more satisfying than trying to fight it. I am planning a small wetland near a small creek that runs through our place, but maybe I'll try to make it a small pond so I can have this type of pond myself.
