dude, I fished fullerton creek for years. When there are torrential rains like we had, sometimes it takes the crawdads a while to get a foothold on what they had. So there may be some in there , but by late summer it will be crawling with them, I guarantee it. But I always got more crawdads downstream more, closer to acacia school and the park. There are some areas where they are much more concentrated than others. Do some leg work and you will find them. Good luck man.