So 75 is not that far off considering IOA is ~85 with ~6 acres of pond inside of it.
I assume that Universal does not own the ponds? I've seen various maps and get a bit confused as to what they have control over and what they don't. It seems they own the area around the ponds (north, south, and west), but not east and possibly not the ponds themselves? Just trying to consider whether the ponds could be considered a 'part of the parks' (e.g. park lagoon or river for transportation) or if Universal is unable to use them in any way.
For example, the attached picture shows two sections of those eastern ponds under the control of Universal. If that's the case, they could potentially use the the ponds as a lagoon in the park, matching the size of IOA/USF while still leaving room for the water park. Obviously this all depends on how much control they would have over the use of these ponds. I understand they probably can't just fill them in with land, but I wonder, they relocate or reshape them? Can they build around them, build bridges over them, put docks/boats on them, use them for lagoon shows?