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Jul 8, 2013
Probabilistic Hydrologic Model to Simulate Response of Urban Drainage System to Implementation of Low Impact Development Stormwater Practices
Authors: Yun Tang and Arthur SchmidtAuthor Affiliations
Publication: World Environmental and Water Resources Congress 2013: Showcasing the Future
Abstract
The article presents a method to study the changes of urban catchment runoff behavior from green roof implementation. The proposed method takes into account the thresholds in green roof response and abrupt changes in areal characteristics, which allows the method to correctly scale various types of green roofs, and ultimately other BMPs, for a range of storm characteristics and BMP implementation. We used the Illinois Urban Hydrologic model (IUHM) as a base model for urban sewer systems, with the incorporation of a green roof model that was developed to simulate the major processes affecting the hydrologic response of green roofs. The modified IUHM model, herein named Combined IUHM-Green Roof Model (CIGM) was used to test green roof impact on hydrologic response at a catchment scale. Results indicate that the implementation of green roofs has a distinct effect on decreasing the volume and peak of urban storm water runoff and postponing the time to peak runoff. The volume and peak discharge reduction depends on the temporal distribution of rainfall and the volume of rainfall and green roof coverage.
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© 2013 American Society of Civil Engineers.
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Published online: Jul 8, 2013
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Yun Tang
Graduate Research Assistant, Civil and Environmental Engineering, University of Illinois at Urbana-Champaign
Arthur Schmidt
Research Assistant Professor, Civil & Environmental Engineering, Univ. of Illinois, Urbana-Champaign
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ASCE Library Cards let you download journal articles, proceedings papers, and available book chapters across the entire ASCE Library platform. ASCE Library Cards remain active for 24 months or until all downloads are used. Note: This content will be debited as one download at time of checkout.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.