CGRG Bibliography of Canadian Geomorphology
Search Results
Author : Bui, T.D.
Date : 1999.
Title : Toward a practical approach for applied river morphology.
Publication : Proceedings of the Second International Conference on Natural Channel Systems March 1- 4, 1999 Niagara Falls, Canada.
Issue :
Page(s) : 385-404.
Abstract
The so-called ‘living strategy’ has been adopted by several agencies in Ontario when dealing with natural streams. The concept is to manage streams based on several appropriate principles. These include, but are not limited to: minimizing the risk of flooding to the public, reducing the potential aggradation & degradation of the watercourse, enhancing the ecological characteristics of the watercourse, providing opportunities for passive and active recreation, and understanding the behaviors of the stream of interest. The result of such an approach is to promote collaboration among biologists, fluvial specialists, planners, and the engineers in order to achieve a successful water resource project. One of the recommendations set out by the strategy is to incorporate fluvial morphology and/or geomorphic knowledge into storm water management and stream management projects. In addition to providing the causes for the endorsement, this paper aims to describe a potential direction, by which applied river morphology can be realized as an effective engineering discipline. Background regarding the need of the incorporation is explained in a logical concept of sedimentation engineering while the subjects of Applied River Morphology (i.e. Movable boundary and Eco-hydraulics) are presented under the following topics: The concept of initiation of motion and the associated quantitative methods, Aspects of modeling related to resistance to flow, Sediment supply versus transport capacity, Number of degrees of freedom with respect to natural streams, Different approaches for quantifying transport capacity, Additional aspects regarding natural stream such as meandering, armouring, etc. Concepts of Regime theory and its associated shortcomings, Issues associated with Stable channel design, and Available tools for engineers and practitioners of water resource discipline. The paper is not intended to provide a ‘quick fix’ scheme, but is intended to ensure that current knowledge and practices can be viewed in a proper context. Limitations regarding general practices are outlined. By recognizing the lack of understanding as well as the limitations of different methods, engineers will have a better chance to identify the work which has to be done and properly direct research, energy and resources to improve overall practices in this important area of environmental engineering.
Bibliography of Canadian Geomorphology