Spoke with the Dozer guy today- He was beside himself apologizing and saying they would be out as soon as the rain subsides to fix the pond. we also agreed that a drain pipe will be placed in the gap now to prevent further issues- hopefully
I'm sure glad you have a stand-up builder that is willing to take ownership of his work, and fix it! I am a big believer in bottom draw siphon systems if you are installing a drain also. You get a huge volume of water removed, from the bottom, at a very reasonable cost.