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When a major storm hits your community, it’s only natural to wonder how it compares to a standard design storm. Was that a 100-year event (1% annual exceedance probability) or a 5-year (20% AEP)? Was it a 5-year event by peak intensity but a 100-year event by total volume? Answering these questions typically requires manual analysis of data from rain gauges or ground-truthed radar.

Freese and Nichols’ resiliency design and stormwater engineers have developed an automated GIS tool to answer these questions for communities across Texas. See below for a set of automatically-generated...

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Tags100 year storm event, Storm Event,

Lack of Preparation Contributes to Effects
When municipalities are unprepared, large storm events often overwhelm them with the need to clean up debris, conduct inspections, perform repairs, respond to questions, and verify substantial damage determination regulation requirements are met. Nothing can immunize a community from flooding, but implementing key practices before, during and after large storm events can minimize effects on your community and help prevent severe damage and repeat flooding. (Brief checklists for practices before, during and after a large storm...

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TagsTips, Storm Event, HMAP, GIS, Flooding,