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Please use this identifier to cite or link to this item: http://hdl.handle.net/11375/32085
Title: Assessing downstream geomorphic implications of low-impact development (LID) projects in the Spencer Creek watershed
Authors: Sun, Flora
Department: Earth and Environmental Sciences
Keywords: stream power, low-impact development, urban rivers, geomorphic sensitivity, imperviousness
Publication Date: 27-Apr-2025
Publisher: n/a
Abstract: The Spencer Creek watershed, located in Hamilton, Ontario, plays a complex role in connecting an extensive network of rivers to the western end of Lake Ontario. Over the past decade, the watershed has seen an increase in urban activity, contributing to notable transformations in the natural landscape. Changes in land use have impacted not only zoning patterns in the region but also the overall quality of surrounding fluvial environments. With climate change and urbanization rates advancing, the city of Hamilton has taken measures to implement advanced stormwater management strategies, including low-impact development (LID). The purpose of these techniques is to imitate the behaviour of natural water systems and assist in stormwater management efforts within cities, often by reducing impervious surfaces. This study used stream power-based analyses to assess the effects of land-use change and LIDs on river networks. Stream power, representing energy expenditure per unit time, is a well-established metric for evaluating geomorphic sensitivity. Sample sites were surveyed for bankfull width measurements in summer 2022 and winter 2024. The data was used to derive empirical values specific to the Spencer Creek watershed and applied to the Stream Power Index for Networks (SPIN) tool. The SPIN tool was then used to generate various scenarios to investigate the post-implementation impacts of LIDs. A range of existing LIDs in Hamilton and theoretical land use changes based on the literature were simulated. Overall, the results of this study offer insight for improving river management strategies and addressing water resource concerns amid evolving climate conditions.
URI: http://hdl.handle.net/11375/32085
Appears in Collections:Student Publications (Not Graduate Theses)

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