Agreed that it is likely close to being over farther south. But, up here in the D/FW area, north and east Texas, the issue has been calendar versus rain levels where many of the "go to" spots are inundated with water. It makes it hard to drop a kayak in.
I did drive over the Neches River in Chandler last week and it is back to normal. That is where I think I might go for a kayak white bass spawn day. Even better, you could go out to River Ridge on the Sabine River, pay a small fee at their establishment to launch there, paddle upstream a bit and find some fishy spots.
In Dallas, the hot spot often targeted and mentioned is Rowlett Creek but I think most of that is bank fishing.
White bass fishing is just super fun. Once you find them, hang on!