Toronto Harbour - History

History

The original shoreline of the northern shore were low sandy bluffs, just south of today's Front Street. The mouth of the harbour pointed west. Fort York, on the north shore of the bay, near the mouth of Garrison Creek, guarded the harbour's mouth. It was briefly captured by American forces during the War of 1812.

The islands were originally a low sandy peninsula forming the southern limit of the bay. The Scarborough Bluffs are much larger bluffs that lie approximately ten kilometres east of the harbour. Strong lake currents over time washed the sand eroded from the bluffs westwards to form the peninsula surrounding the bay.

The peninsula became the Toronto Islands through the result of two storms and man-made activity. In 1852, a storm created a channel through the eastern edge of the peninsula that formed the south edge of the bay. The storm washed through excavations made for sand for local construction. In 1858, another storm widened the channel and made it permanent.

The eastern shore of the bay, approximately six kilometres east, was a marsh around the mouth of the Don River. In addition to the Don River a number of smaller creeks flowed into the bay. The original site of the town of York had half a dozen short creeks that flowed through it. As the town developed they all became polluted, and were buried. As the city grew the larger creeks, including Russell Creek, Taddle Creek and Garrison Creek, were also filled in.