Flood Resiliency in an Urban Setting – Flood Mitigation Measures in Rye, New York

APA New York Upstate Chapter


Wednesday, April 25, 2018
4:15 p.m. - 4:45 p.m. EDT

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The continuous development of urban landscapes together with the shifting climate in the northeastern US is predicted to result in increased magnitude and frequency of urban flooding events (USGCRP 2014).

The City of Rye, New York has experienced periodic flooding associated with Blind Brook resulting in significant property damage and services interruptions to the local community. Previous studies identified several potential flood mitigation measures including expansion of an existing pond and automation of a sluice gate installed at a local dam. In 2016 and 2017, OBG, working with the Dormitory Authority of the State of New York (DASNY) and the Governor’s Office of Storm Recovery (GOSR), performed detailed studies of the effectiveness of several flood management strategies associated with Blind Brook and Bowman Pond. The hydrologic and hydraulic evaluation was conducted based on modeling results of flood mitigation alternatives using HEC-RAS software.

During the presentation, OBG will provide a description of the study site, outline the approach selected to characterize the factors contributing to the severity of flooding and present the assessment of the selected flood mitigation strategies. Evaluation of Bowman Pond expansion and automated operation of the sluice gate will be presented together with the details of a Benefits Cost Analysis performed for the selected remedy. The methodology for automating the operation of the existing sluice gate will be outlined and anticipated next steps presented.


Peter Johantgen

Invited Speaker


Piotr Domaszczynski

Invited Speaker


Brian Platt

Invited Speaker


Contact Info

Bill Nechamen, billnechamen@gmail.com