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Publication: Impact of Climate Change on hydrologic regime in Canard River Watershed, Ontario

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Title Impact of Climate Change on hydrologic regime in Canard River Watershed, Ontario
Authors/Editors* Rahman, M., T. Bolisetti, and R. Balachandar
Where published* IAHR 2009
How published* Proceedings
Year* 2009
Volume
Number
Pages
Publisher
Keywords Climate Change, hydrology, impact assessment
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Abstract
Canard River watershed, within the southern Ontario, is the largest sub-watershed of Detroit River watershed on the Canadian side. There have been concerted efforts by the Province of Ontario to develop the water budgets in all the sub-watersheds of the Province as part of Clean Water Act (2006). The Act recognizes the likely impact of the climate change conditions on the hydrologic regime. The objective of the present study is to understand and assess the impact of climate change on the streamflow from the Canard River watershed discharging to the Detroit River. Soil and Water Assessment Tool (SWAT) model is implemented to assess the hydrologic regime. SWAT model is calibrated and validated for the streamflow from the Canard River watershed using the data for the period 1993-2005. In order to assess the impact of climate change, the model is also run for the predicted climate change scenarios as obtained from the Regional Climate Model (RCM) prediction for A2 scenario. The downloaded climate change scenarios data include mean maximum and minimum temperatures and precipitations. In this process, LARS-WG weather generator is used for the generation of daily future weather data at local scales from the RCM outputs. This paper presents the results from the SWAT model simulations for both current and future predicted climate scenarios in terms of annual and monthly flows, distribution of wet and dry days and variations in flows during winter and summer months.
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