Congrats on your new pond, Mike!
Clay above shale can be a tough situation.
Is the pond holding water tight now?
Some shales are fractured and leak, some form perfect seals. Did the shale look fractured when you exposed portions in the pond bottom? How much clay blanket did you leave on the shale? Did you leave the clay "virgin" or scarified and compacted?
(I am asking all of these questions because I frequently post replies when people run into tough soil conditions for their ponds.)
P.S. There is a new thread about posting high-resolution photos. Pond Boss people love to see pics of new ponds!
Pond Boss Thread - Posting Photos from Imgur
