While solid clay isn't the best thing to use, it ought to work in your area. Solid clay cracks when it dries.

Does the creek flood into the area?

That ought to be OK for watering cattle. I have one that size and, at one time, that was my only water hole. Of course, no matter what, you have to hope/depend on rain.

BTW, can you pump from the creek if you have a water problem like a drought?

It's not about the fish. It's about the pond. Take care of the pond and the fish will be fine. PB subscriber since before it was in color.

Without a sense of urgency, Nothing ever gets done.

Boy, if I say "sic em", you'd better look for something to bite. Sam Shelley Rancher and Farmer Muleshoe Texas 1892-1985 RIP Grandpa