International Low Impact Development Conference 2016
Green Infrastructure Performance Model in the Real World: Modeling Natural and Simulated Runoff Events
Publication: International Low Impact Development Conference 2016: Mainstreaming Green Infrastructure
ABSTRACT
Philadelphia Water’s Green City, Clean Waters program outlines a vision for large-scale implementation of green stormwater infrastructure (GSI) to reduce stormwater-based demand on the combined sewer system. Stormwater tree trenches are an essential stormwater control measure (SCM) of the Green City, Clean Waters program. In order to effectively assess the performance of stormwater tree trenches, collaborators at Drexel University and Philadelphia Water developed a green infrastructure performance (GIP) model that predicts infiltration rates and estimates water levels within the SCM. Quantitative experimental data are evaluated in order to demonstrate GIP’s applicability to a variety of SCMs. 13 SCMs currently monitored by Philadelphia Water are assessed as case studies. Quantitative performance evaluation via simulated runoff tests (SRTs) is discussed. SRT application allows for testing of SCMs in a controlled manner. SRT procedures developed by Philadelphia Water staff are discussed in detail. These procedures introduce metered flow to the SCM via a fire hydrant connection. Quantitative data regarding inflow and water level in the SCM and qualitative observations are collected. These inputs, and precipitation data from natural events, are used to calibrate the GIP model. Analysis protocols and real world applicability are discussed through these case studies. The GIP model uses R and related technologies to execute model routines. R is used to perform quality assurance and quality control of large amounts of data collected in SRT activities. When data analysis and model runs are complete SRT data is used to validate and calibrate additional analysis routines.
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Published In
International Low Impact Development Conference 2016: Mainstreaming Green Infrastructure
Pages: 163 - 172
Editors: Robert Roseen, Ph.D., Waterstone Engineering, Virginia Roach, CDM Smith, and James Houle, Ph.D., The University of New Hampshire
ISBN (Online): 978-0-7844-8054-0
Copyright
© 2017 American Society of Civil Engineers.
History
Published online: Oct 11, 2017
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