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University of Guelph (2004)

Spatial allocation of irrigation water in an agricultural watershed using GIS

Wong, Amanda Wendy

Titre : Spatial allocation of irrigation water in an agricultural watershed using GIS

Auteur : Wong, Amanda Wendy

Université de soutenance  : University of Guelph

Grade : Master of Science (MS) 2004

Résumé
This study develops an integrated framework of irrigation modelling and GIS to examine spatial allocation of irrigation water in an agricultural watershed in Southern Ontario. Within the framework, an irrigation simulation model was adapted to estimate irrigation water requirements based on crop type and soil texture. Then remote sensing and GIS were used to assign available water supply to specific locations and develop water allocation scenarios. Results show that even during a normal year most of the agricultural land in the watershed faces a water deficit during the growing season. The water deficit exacerbates during a drought year and water shortage exists in the entire agricultural area. Furthermore, equally allocating water to all agricultural areas or allocation water based on crop demand led to very different spatial patterns of water deficit in the watershed. The results have implications for drought management in intensive agricultural regions.

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Page publiée le 14 mars 2015, mise à jour le 7 février 2018