We do not routinely survey crappie in the Mississippi River or its tributaries, like the Salt River. But based on my experience over the years, I do think that the abundance of crappie in Mississippi River tributaries is much lower now than it was 20 years ago. I wouldn't classify crappie as abundant anywhere along the Mississippi. Having said that, there are certianly crappie in the Salt and not many folks fish for them there so you won't be competing with many other folks.