Everything was going according to plan with filling the new Don River valley with water — until workers noticed a leak.
Water was pouring into the valley from one of three massive concrete walls that temporarily separate the new river valley from surrounding bodies of water.
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Pumps were turned on Jan. 31 to fill the new Don River valley from water through the Polson Slip. (Mahdis Habibinia / Toronto Star)
The river valley, although flooded, is currently separated from the Polson Slip by a 10-metre tall concrete wall to the west, which runs 50 metres in length. To cut three metres off the top took about a month.
Workers have to slice the plugs into pieces, underwater, before removing them.