Could you please provide a link to where this issue was addressed? I am not aware of any discussions about this topic. For developed areas to be carved out of the reservoir, they'd have to be physically raised in elevation, and I can't find any information online about such a project.

To reiterate, your changesets broke five multipolygon and boundary relations. There were several "inner" polygons left outside of "outer" polygons for the reservoirs, and the boundaries for Harris and Fort Bend Counties had a chunk left missing. Even if your mapping practice were otherwise correct, these large-scale geometry errors needed to be reverted.

I was one of the first few editors of these reservoirs over 10 years ago. I grew up in Katy, and while I have since moved away and my most recent edits have largely been outside of Katy, I have not stopped caring about my hometown. The boundaries of the reservoirs and the elevations within are largely the same as they were back then. If you have any updated information, let me know.