The water has finally filled in as of a week ago. It is now just about 2 feet from the lower deck. The plan for the gazebo is an 8 sided roof with a vented bird cage on top in case I add a fire pit. I am going to build some builtin seating around the back three sections and the alternate steps with railing on the other 5 sections. The lower fishing deck will have railing on the two sides and a slit gate with fold down ladder facing the pond. I have not measured since it filled in but it is about 16 feet deep with about 1 acre in the open area and about 1/4 acre in the creek bed.