University Green Stormwater Infrastructure Modeling

Principal, Tony Dubin, worked closely with King County staff and a multi-disciplinary consulting team to guide the sizing of roadside green stormwater infrastructure (GSI) retrofit projects and estimate the basin-wide reduction in CSO frequency and volume. Initially, Tony used modeling to inform the design team about the relationship between GSI size and the volume of water removed during storm events. The effort helped the team develop basin-wide alternatives for bioretention deployment. Next, Tony worked closely with King County staff to integrate the GSI alternatives into the County’s MIKE URBAN model of the University Basin. County staff then produced modeling results that estimated the GSI-related CSO volume reduction and cost per gallon removed. This marked a significant innovation as the first County project to use MIKE URBAN’s LID module to directly evaluate GSI alternatives.

Services: Modeling, LID/GSI