steveintoronto
Superstar
@facepalming_brooklynite said: ↑
http://www.gordperks.ca/wp-content/uploads/2012/11/High-Parks-Hidden-Waters.pdf
Tunnelling under Parkside Dr is a wet dream...doing a below prevailing grade ledge on the western edge is quite do-able, the loss of parkland besides, but considering what High Park has already endured, the eco gain for the loss more than justifies it.
Also, much of the Eastern edge of High Park along Parkside Drive between Howard Park Ave and Bloor is characterized by a rather steep ravine down to Spring Creek. I doubt that tunneling is possible there. I remember a few years ago the westernmost lane of Parkside Drive was closed because part of the road had collapsed into the ravine.
Hidden Laurentian River’s East Bank, Proved to be below High Park’s Spring RoadThere's also a very powerful aquifier under the north-east corner. Tunneling there is out of the question, albeit the aquifier is a good 50 metres or more down. It has an incredible pressure, and flow. What would have to happen is that lower than grade shelf is built along the edge of Parkside. Removal of a fair number of trees would be necessary, and few people understand, for better or worse, how High Park has already been highly mutilated. In the big scheme of things, this would only be peripheral, but an affront none-the-less, but Roncy just hasn't the room or nature to move streetcars the way needed for King to work the way it should. Ditto Broadview. The ends are very severe limitations.
[...]Their names are largely lost, although the creek that ran along Indian Valley Crescent & Indian Grove, was once referred to as the Indian Valley Creek by Professor of Geology; Elwood S Moore. This particular creek entered into High Park at the exact location along Parkside Drive, where sinkholes appeared in 2009. This stream is no longer shown outside the Park in maps.
http://www.gordperks.ca/wp-content/uploads/2012/11/High-Parks-Hidden-Waters.pdf
Tunnelling under Parkside Dr is a wet dream...doing a below prevailing grade ledge on the western edge is quite do-able, the loss of parkland besides, but considering what High Park has already endured, the eco gain for the loss more than justifies it.
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