An Interdisciplinary Water Risk Assessment Framework for Sustainable Water Management in Ontario, Canada

The Province of Ontario in Canada illustrates contemporary water security issues, where despite perception of water abundance, water challenges arise locally. Water risks stem from biophysical dimensions of groundwater depletion, low surface water flows, and degraded quality, and, contextual dimensions of regulatory uncertainty, public concerns and perception. While academic, policy, and practitioner interest is growing, literature reveals major gaps in comprehensive assessment of multidimensional water risks at the subwatershed scale. Addressing these gaps, the study developed a locally attuned and interdisciplinary water risk assessment framework. Using secondary mixed data analysis, the study integrated quantitative and qualitative data for water quantity and quality risks, regulatory trends, water user conflicts for 38 subwatersheds in Ontario. The framework identifies subwatersheds and sectors at high, moderate, and low risk along with media and public concern themes. The study finds high and moderate risk potential in at least 50% of studied subwatersheds for all water risk indicators and challenges the myth of water abundance in Great Lakes watershed of Ontario. The study advances knowledge in water risk assessment by applying social-ecological perspectives, interdisciplinary approaches of Risk Theory, and mixed methods to provide a comprehensive evaluation of water security and demonstrates integration of social science perspectives in the field of sociohydrology. Our framework assesses interdisciplinary water risks to inform multisector sustainable water management decisions. While spatially scoped to populous subwatersheds of Ontario, this framework can be methodologically generalized to other geographical regions by using local data.