What a 100-Year Flood Actually Means
Practical Engineering · Explainer · 8 min · 2016 · YouTube title: The 100 Year Flood Is Not What You Think It Is (Maybe)
Why it's here
HN points to it as a clear explanation of what flood return periods really mean.
What it covers
Practical Engineering explains what a 100-year flood actually means, combining statistics, hydrology and how society treats risk. Grady walks through local drainage infrastructure and the caveats in estimating flood probability.