Description
Date: Presented at StormCon 2024 in Reno, Nevada on August 28, 2024
Speakers: Madeleine Alwine & Dipmani Kumar
Credits: 0.75 PDH / Approved for all Envirocert International, Inc. (ECI) Certifications: Approval #PDH-0042
In this presentation, speakers will describe an empirical model developed to assist in making mitigation response decisions at a tide gate control for a community in Fairfax County, Virginia. Speakers will illustrate the application of the model to a recent event. The county’s New Alexandria tide gate, built in 1994, is on an unnamed tidal creek in the Belle Haven watershed, draining to the Potomac River. The tide gate protects the 44-acre drainage area it serves from high tides and tidal surges from downstream up to about 7.5 feet. With increasingly high upstream water levels, there was a need to obtain estimates of upstream levels for forecasted high tide and rainfall conditions to make timely decisions on the deployment of mobile pumps at the tide gate. The empirical model described here is being utilized in the interim to guide deployment of mobile pumps. Speakers will present examples of how the model is used from recent storm events where the rainfall coincided with high tide.
Session duration: 45 minutes
About the Presenters
Madeleine Alwine works at the Department of Public Works and Environmental Services in Fairfax County, Virginia. After graduating from the University of Virginia in 2022 with a BS in Civil Engineering, she participated in the county’s Professional Engineer Development Program where she gained experience in Stormwater Planning, Solid Waste Management, and Wastewater Planning. She currently works as an Engineer in the Stormwater Planning Division and has expertise in flood modeling and stream restoration.
Dipmani Kumar is a water resources engineer with Fairfax County Department of Public Works and Environmental Services. He currently serves as Chief of the Watershed Modeling and Analysis Branch within the Stormwater Planning Division. He is a registered Professional Engineer in Virginia and a Certified Floodplain Manager.
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