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Climate 2017, 5(2), 39;

Water Budget in a Tile Drained Watershed under Future Climate Change Using SWATDRAIN Model

School of Engineering, University of Guelph, Guelph, ON N1G2W1, Canada
Department of Bioresource Engineering, McGill University, Montreal, QC H9X3V9, Canada
Ontario Ministry of Environment and Climate Change, Etobicoke, ON M9P3V6, Canada
Author to whom correspondence should be addressed.
Academic Editor: Yang Zhang
Received: 14 January 2017 / Revised: 27 April 2017 / Accepted: 16 May 2017 / Published: 25 May 2017
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The SWATDRAIN model was developed by incorporating the subsurface flow model, DRAINMOD, into a watershed scale surface flow model, SWAT (Soil and Water Assessment tool), to simulate the hydrology and water quality of agricultural watersheds. The model is capable of simulating hydrology under different agricultural management and climate scenarios. As an application of the SWATDRAIN model, the impact of climate change on surface/subsurface flow was evaluated in the Canagagigue Creek watershed in southern Ontario, Canada. Using the assumption that there has been no change in land cover and land management, the model was applied to simulate annual, seasonal, and monthly changes in surface and subsurface flows at the outlet of the watershed under current and future climate conditions. The climate scenario under consideration in this study for 2015–2044 was derived from CGCM2 (Canadian Global Circulation Model 2), with A2 scenario for future climatic simulation. The SWATDRAIN model’s ability to predict the impacts of future climate change scenarios in agricultural watersheds due to monthly NSE (Nash Sutcliffe Efficiency), PBIAS (Percent Bias), and RSR (Root Mean Square Error) values of 0.74, 3.67, and 0.37, respectively, for the validation phase. The results showed that general climate change effects more spring and winter hydrology than summer hydrology. The results show that the annual flow is expected to increase in future, which will lead to an increase in the sediment loads in the stream. View Full-Text
Keywords: SWATDRAIN; climate change; hydrology; drainage; cold climate SWATDRAIN; climate change; hydrology; drainage; cold climate

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Golmohammadi, G.; Rudra, R.; Prasher, S.; Madani, A.; Mohammadi, K.; Goel, P.; Daggupatti, P. Water Budget in a Tile Drained Watershed under Future Climate Change Using SWATDRAIN Model. Climate 2017, 5, 39.

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