The Vale of Avoca

The Vale of Avoca is a ravine in Toronto's Deer Park and Moore Park area, carved originally as a small embayment on the shoreline of prehistoric glacial Lake Iroquois. In the mid-19th century, as streetcar service extended north up Yonge Street, the ravine became a popular Victorian-era destination park at the end of the line — in continuous public recreational use since roughly that period.

Bridges built for real estate

The ravine has been spanned by a sequence of bridges tied to development rather than pure infrastructure need: the first was an iron bridge built in 1888 to help market a new subdivision on the ravine's north side. That bridge was eventually replaced by the current triple-arch concrete viaduct carrying St. Clair Avenue East, which opened to traffic in late 1924, connecting the established community of Deer Park with the developing Moore Park neighbourhood.

Yellow Creek

The ravine carries the only above-ground stretch of Yellow Creek, a partially buried tributary of the Don River whose watershed drains more than 10 square kilometres of midtown Toronto, mostly through storm sewers, before daylighting briefly here. The creek and slopes have suffered significant erosion in recent decades, and the city and TRCA have run active slope-stabilization projects in the ravine.

Sources

• Vale of Avoca community group — History
• Toronto and Region Conservation Authority — Vale of Avoca Improvement Project