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Thanks for this excellent work, I've always wondered where the creek ran, as I presumed it would be north to south. Since it does come out as a creek past the railroad tracks, I have to presume there is still running water underground. In the 1970s, when construction projects were probably not as well researched before they started, building sites downtown kept "rediscovering" Taddle Creek, forcing a change in plans after holes had already been dug!

Creeks, in fact all sources of water, meander.

No directional sense at all but most eventually end in Lake Ontario.
 
We’ve been interested in it for years.

A friend of my family used to live on south side of Roehampton, pre-war and she and her brother skated on a ‘frog pond’ across the road.

Turned out they skated where Fairfield now is located.

At some point, the city or a developer drained that part of Walmsley Brook and built homes where the kids skated.

Then when McDonalds had major problems at the south east corner of Bayview and Eglinton it just added to our curiosity.

It had to be related and due to the hidden rivers as they were then known.

Thank you for putting it together so well Metroscapes.
 
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I've looked for a rumour of tracks sinking at Bayview Station (or Leaside Station, which is what it will be called on line 5; I'm not sure which station we're even talking about), and can't find anything. Maybe it's time to ask for a source. Not that I don't think it's possible; the intersection (on Eglinton) is on a former or covered-over river bed.
I'm a little doubtful of this whole rumour...but maybe engineers missed something? Yes, this station sits in an old creekbed, and this area was once near the shoreline of Lake Algonquin, the proto-lake to Lake Ontario.
 
Bayview / Eg is the site of the former path of Walmsley Brook. It survives south of the CPKC tracks near the future Ontario Line MSF, and its headwaters are historically by Duplex and Montgomery. I traced its route in 2018.

View attachment 667702

I should also quote back to this:
You explained this much better. I did some research work involving Walmsley two years ago, and was studying the impacts of Metrolinx construction on the remaining natural watercourse by Thorncliffe Park.
 
Screenshot 2025-07-24 at 2.30.28 PM.png


Based on this it would seem like the bedding-in period cannot be longer than 90 days, after substantial completion.
Substantial completion is expected to be announced after revenue service demonstration is completed...
 

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