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Characterization of the Winter Regime of an Urban River Open Access


Other title
Open Leads
Urban Rivers
Bottom Mounted Sonar
Frazil Mitigation
River Ice
Type of item
Degree grantor
University of Alberta
Author or creator
Maxwell, Joshua A.
Supervisor and department
Hicks, Faye (Civil and Environmental Engineering)
Loewen, Mark (Civil and Environmental Engineering)
Examining committee member and department
Loewen, Mark (Civil and Environmental Engineering)
Hicks, Faye (Civil and Environmental Engineering)
Kavanaugh, Jeff (Earth and Atmospheric Sciences)
Department of Civil and Environmental Engineering

Date accepted
Graduation date
Master of Science
Degree level
In the northern reaches of the globe, cities built along rivers create open leads in the river’s seasonal ice cover through warm water effluent discharge. These open leads are known for producing episodic frazil events which can block downstream intakes, causing major problems for recipients of the intake water. The Edmonton reach of the North Saskatchewan River presents an excellent example of such a case. During the 2010/11 winter, instrumentation was deployed in and along the North Saskatchewan River in Edmonton to document surface ice characteristics and suspended frazil formations. A dataset was compiled consisting of third party information and data collected during this study. Through the analysis of this data, the 2010/11 freeze-up was characterized, open lead formations were documented and suspended and surface ice events in an open lead were categorized. Formation criteria were then developed for suspended frazil events.
Permission is hereby granted to the University of Alberta Libraries to reproduce single copies of this thesis and to lend or sell such copies for private, scholarly or scientific research purposes only. Where the thesis is converted to, or otherwise made available in digital form, the University of Alberta will advise potential users of the thesis of these terms. The author reserves all other publication and other rights in association with the copyright in the thesis and, except as herein before provided, neither the thesis nor any substantial portion thereof may be printed or otherwise reproduced in any material form whatsoever without the author's prior written permission.
Citation for previous publication
Maxwell, J., Hicks, F., Loewen, M., 2011. Study of Freeze-up Ice Characteristics on the North Saskatchewan River. 16th Workshop on River Ice. Winnipeg, MB.

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