glad you made it here, Welcome. I can't be much help with you finding a pump but I have seen this type of question come up from time to time. Seems like the best answer for a pond of that size might be using an excavator to reach out as far as it can and work around the ponds shoreline. It would give you some depth that you may not have now. But you will need a place to put the dirt. Hope this helps you out some.

Do not judge me by the politicians in my City, State or Federal Government.


Tracy