Using Open-Access GIS to Address Issues in Spatial Hydrological Modelling

Digital elevation models (DEMs) are a primary data input for many applications in spatial hydrology and geomorphology. DEMs are commonly used to delineate watersheds, to map landforms and soils, to analyze stream networks, and to model variable source areas, surface runoff and flooding, erosion, and contaminant migration. The past decades have been marked by significant improvements in the quality, spatial resolution, and availability of DEM data sources.

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Coffee and light refreshments will be provided. 

Key topics covered

This research talk explores some of the main issues involved in the pre-processing of DEMs used for spatial hydrology, including methods used for removing artifact topographic depressions and for enforcing consistency between DEM-extracted stream networks and mapped hydrography data. 

Speaker bio

John Lindsay is an associate professor for the University of Guelph's Department of Geography. His research explores applications of geomorphometry to spatial hydrology and geomorphology. He is particularly interested in applications involving laser scanning (LiDAR) for topographic modelling and the use of digital elevation models (DEMs) to model surface drainage patterns.

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