I can't speak for the Niangua or the Current, but I can speak about Capps. There IS a population of "Streamborn"( I think that is the currently accepted term)trout in Capps. It may be a small population, but it is there. Over the last 2 years, I have witnessed being caught and caught myself several parr marked fish that are not of the MDC stocking variety. In the last few months I have caught at least 6 small fish that I believe to be wild. The local MDC biologist says that they don't reproduce in this creek, but I have to disagree.
What is different? I don't have a clue, but if enough fish are stocked for enough years they will find a way to reproduce. I strongly believe that if they are given time and space they will do exactly what they are supposed to do, reproduce.
Back in September I called the same biologist to tell him that I had been catching a lot of small trout from another White Ribbon stream and he said that they were going to survey this particular stream in a few days. Guess what? After the survey he told me that out of the 40 trout they found 17 were apparently not stocked fish ( several small parr marked fish were shocked up). He swears that they do not put fish in the stream that are smaller than 11 or 12 inches in length. When I asked if we might have a thriving population of streamborn trout he finally said that it was possible.
Bottom line is, if these fish are given enough space and time they will reproduce. Don't forget the fact that some of these steams have been quoted as being "TOILETS".
If there is enough of a documented wild population, I think that a Blue Ribbon section should be awarded to these streams.
JMEO