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Federal Triangle Flood Mitigation Study for General Services Administration

Knowing the risks

  • 7

    Buildings

  • 1K+

    Penetrations

  • 500+

    Existing Drawings

  • Washington, District of Columbia

    Washington, District of Columbia

Understanding natural conditions to predict future flood risks in DC

In 2006, a microburst rain event caused flooding and significant damage to the Federal Triangle, a section of the District of Columbia that houses the Reagan, Internal Revenue Service, Environmental Protection Agency, Department of Justice, and Commerce buildings.

The Government commissioned two studies: one to understand the flooding and one to understand the likelihood and risk of future events. We used these two previous studies alongside onsite inspections to identify what building areas were vulnerable to future flooding. 

In the end, our study delivers peace of mind. It gives the General Services Administration mitigation alternatives for future flooding events based on 15-, 100-, 200-, and 500-year microburst rain events. Custom flood protection alternatives were cost conscious, off-the-shelf, and categorized by rain events. The mitigation study also included hydrostatic load bearing capacity, resiliency, maintenance requirements, ease of use, sustainability, and cost.

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