Digging a small pond in a forest w/ a skid steer

Years later finally using my Daewoo DSL 601 40hp skid loader to build a pond. Yes we wanted a bigger pond but layout of my land and the fact that we didn't want to take down the forest, I settled on a small "retention" sized pond. The quality of clay and the downhill location of it should keep it full. We will see right now we are in a drought to its hard to dig anymore.