I caught a bunch in the ditch outside my house a couple weeks ago! I only kept one though. I'll probably head out around the area when I get some free time one of these weekends...
I picked up a good sized C.bartoni out of a stream in NJ near where I work. It's my main spot to catch them. I took a few pictures and released it. I won't take any adult crayfish until they are done mating.
Very cool. I got what I believe to be a C. ludovicianus in a park here in Baton Rouge, Louisiana two weeks ago. It was a juvenile, so difficult to say for sure.