Coupling Hydrologic and Urbanization Modeling: A Multi-Scale Investigation to Enhance Urban Water Resource Systems Sustainability

Date

2017

Authors

Zarezadeh, Vahid

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Abstract

Sustainability of water resources systems is negatively affected by urbanization, both in terms of water quantity and quality. These effects are exacerbated in rapidly urbanizing communities which put pressure on water resource systems. This dissertation investigates the interconnection between water resources sustainability and urbanization at three different scales (watershed, catchment, and subcatchment). At the watershed scale, hydrologic and land use change models have been coupled to provide updated land cover through hydrologic simulation. This method provides more reliable simulation results and reduces uncertainty in representation of hydrologic processes. At the catchment scale, performance of different types of Low Impact Developments (LID) were assessed using hydrologic/hydraulic model and optimal locations of one type of LID (bioretention) for reducing runoff volume and peak flow were found using optimization techniques. At the subcatchment scale, water quality performance of one sand filter basin was evaluated to find out the efficiency of current practices for treating urban stormwater. The results of this study can help policymakers and stormwater managers to better assess the negative impacts of urbanization on water resources and provide mitigation strategies for protecting water resources to enhance security and resilience of fast growing communities.

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Keywords

Hydrologic Modeling, Long Term Simulation, Low Impact Development, Multi-ojective Optimization, Water quality, Water Resources Management

Citation

Department

Civil and Environmental Engineering