SPU Drainage System Analysis

Principal, Tony Dubin, led the hydraulic modeling of seven storm drainage and creek basins throughout Seattle. This effort included modeling existing and future development scenarios using historical rainfall and future climate change scenarios with the goal of identifying drainage infrastructure that does not meet city-defined performance standards, identifying overbank flow/floodplain engagement locations, and describing the underlying hydraulic reasons for any flooding (e.g., pipe and culvert constrictions). Additionally, Tony served as a senior QC reviewer on the project and provided oversight and guidance for 30+ basin models developed across four engineering firms. Currently, Tony is modeling the Thornton Creek watershed and four other watersheds around the city to estimate the degree to which urbanization has increased 2-year flow rates at numerous key locations along the mainstem and tributaries, relative to undeveloped, pasture conditions. The success of this effort led to Tony’s selection to lead modeling for a Thornton Creek restoration and floodplain reconnection project.

Services: Modeling, Drainage Analysis, Stream Hydraulics