O-Train Line 1/3 [Stage 2 | West Extension | Tunney's to Baseline/Moodie] | U/C

[Uhuniau]

Originally Posted by J.OT13

I think it's still mostly combined in the urban west end, hence the common basement flooding issues.

I think those problems are related to stormwater-as-stormwater drainage issues. Anything built since about 1960 was "born separated", and most of the fringes of the pre-1960 city have been retrofitted since then. Centretown South (old Stewarton, largely) and the Glebe are the core of the area that is still combined, with isolated patches elsewhere.