CGRG Bibliography of Canadian Geomorphology
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Author : Alexander, L.J.D.
Date : 1999.
Title : Little Etobicoke Creek - a natural channel design case study for urban streams.
Publication : Proceedings of the Second International Conference on Natural Channel Systems March 1- 4, 1999 Niagara Falls, Canada.
Issue :
Page(s) : 201-206.
Abstract
This paper describes the re-design of a reach of Little Etobicoke Creek in Mississauga, Ontario, following failure of an initial attempt to stabilize the reach using natural channel design techniques. The re-design was carried out with Dave Rosgen as technical advisor. The creek was designed as a low gradient B channel with root wads and rock vanes used to fortify the outside of bends in the channel, and brush mattressing and sod mats with live stakes used to protect the banks of the creek. Vortex rock weirs were constructed at the beginning and end of riffles for grade control. The channel profile was designed to create well defined riffle/pool sequences with flat grades through the bends and steeper grades through the riffles. Construction was completed in the summer of 1996 and, in spite of being subjected to severe rainfall events during and immediately following construction, the re-designed channel has remained stable and has continued to perform satisfactorily up to the present time. The Little Etobicoke Creek experience has provided valuable information on the natural channel techniques appropriate for the harsh hydrologic conditions at highly urbanized streams.
Bibliography of Canadian Geomorphology