View attachment 848047
From
https://ocgis4.ocfl.net/Html5Viewer/Index.html?viewer=InfoMap_Public_HTML5.InfoMap_Public
This is the base map, with an aerial overlay slightly visible for context.
The canal is on the map to the lock and the only the lower part of RoA.
I can find something similar in an
online hydrology map (waterbodies) for Orange County updated early this month: for the folks I DM'ed earlier, it was updated this month too. You would have to zoom in on the Magic Kingdom, if you use that link.
I believe the new pond is designed to overflow its north embankment dam, away from the Utilidors and into a series of slopes, and conduits leading to the new water management system.