This paper summarizes the results of a three-dimensional moveable-bed, physical-hydraulic model study for proposed engineering improvements, implemented as part of an ecosystem management plan for Martindale Pond, St. Catharines, Ontario. The ecosystem management plan is being undertaken in conjunction with improvements to the Henley Rowing Course, which recently was awarded the 1999 World Rowing Championships. The ecosystem management plan consists of improving water quality, sedimentation regimes and bank stability in Martindale Pond, and bringing an existing rowing course up to current international standards for the world championships. The model study was undertaken at a distorted scale (1:100 horizontal; 1:25 vertical). The model demonstrated that improvements to the flow regime along the rowing course will provide a number of benefits including decreasing the potential for incoming sediment to be re-deposited on the floor of the course, decreasing local bank erosion (thus reducing sediment loading in Martindale Pond), providing a uniform flow distribution across the rowing lanes, and increasing the ecological quality of the pond. Enhancement of the ecosystem will improve water quality, improve environmental conditions for the wetland areas, increase the bio-diversity of the pond ecosystem, and provide recreational and aesthetic benefits.
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