Stormwater management ponds are widely used to control urban stormwater pollution. An understanding of the relevant biological, chemical and physical processes in such ponds requires a comprehensive monitoring program. Such a program is described for a 0.52 ha pond near Kingston, Ontario. In addition to continuous measurement and discrete sampling of pond inflow, storage and outflow to define the overall mass balances of water, sediment and chemicals, the program includes special process-related surveys and investigations. These include analyses of bottom sediment cores, suspended sediment and submergent plants as well as modelling/measurement of the velocity field and sediment transport. This comprehensive monitoring program is presented as an example of what should be implemented in many climatic regions before transfer of data on pond performance can be justified.

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