Dissertation
EVALUATION AND OPTIMIZATION OF LOW IMPACT DEVELOPMENT DESIGNS FOR SUSTAINABLE STORMWATER MANAGEMENT IN A CHANGING CLIMATE
Washington State University
Doctor of Philosophy (PhD), Washington State University
01/2021
DOI:
https://doi.org/10.7273/000003363
Handle:
https://hdl.handle.net/2376/123099
Abstract
The intensity and frequency of extreme storms have been increasing due to possible climate change, making it challenging to manage stormwaters in highly urbanized areas. Without an adequate and appropriate stormwater system, these storms may cause major floods and damages. Low Impact Development (LID) has gained acceptance as an alternative for managing the increased stormwater. However, there is limited understanding of their effectiveness and optimize the LIDs with conventional stormwater systems (CSSs) under current and future climates. This dissertation aims to evaluate the performance of several LIDs under current and future storm conditions, identify the best performing mixes of LIDs and CCSs, and provide a decision-making tool for urban stormwater management. The Stormwater Management Model (SWMM) was used to simulate the rainfall-runoff under conventional and LIDs-based stormwater systems. A multi-objective Genetic Algorithm (MOGA) was used to optimize the LID and CCS further, considering the reduction in runoff and installation costs. The type, size, location, and the number of different LIDs were considered as decision variables.the methodologies have been tested for Renton City, located in King County, one of the fastest growing area in the US Pacific Northwest and often impacted by floods. The overall results show that the LID practices are more effective in reducing total runoff compared to peak flow. The reduction from the 50- and 100-years flood events ranges 30% - 75% for total runoff volume and 25% - 55% for peak flow depending on LIDs’ types and combinations. The optimum combination of LIDs in the study area can reduce the peak flow and total runoff volume by up to 13% and 29% under future climate change and by up to 62% and 80% under the current storm conditions. The framework introduced in this study will help the local authorities and practitioners to implement appropriate climate change adaptation strategies by maximizing the benefit from LIDs and ensuring sustainable stormwater management for the current and future climates.
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Details
- Title
- EVALUATION AND OPTIMIZATION OF LOW IMPACT DEVELOPMENT DESIGNS FOR SUSTAINABLE STORMWATER MANAGEMENT IN A CHANGING CLIMATE
- Creators
- Yasir Qasim Abduljaleel
- Contributors
- Yonas Demissie (Advisor)Joan Wu (Committee Member)Akram Hossain (Committee Member)Jennifer Adam (Committee Member)
- Awarding Institution
- Washington State University
- Academic Unit
- Civil and Environmental Engineering, Department of
- Theses and Dissertations
- Doctor of Philosophy (PhD), Washington State University
- Publisher
- Washington State University
- Number of pages
- 235
- Identifiers
- 99900652205601842
- Language
- English
- Resource Type
- Dissertation