It was a tributary of the still-existing Mimico Creek, a watercourse that empties into Lake Ontario.

The creek is named for Irish immigrants Bill and Letitia Bonar who lived in a pumphouse near the waterway.

[3] Almost the entire creek has been buried, except for a short stretch where the former watercourse joined Mimico Creek, and that remaining portion has been canalized.

[2] There are plans to restore part of the wetlands at the confluence of the two creeks.

This article related to a river in Ontario, Canada is a stub.