What is a 100/500/1000-Year Flood Event?

General References on the 1% (100-year) flood standard:

Reducing Flood Losses: Is the 1% Chance (100-year) Flood Standard Sufficient?

FEMA – The 100 Year Flood Myth

Holmes Jr, Robert R., and Karen Dinicola. “100-Year flood–it’s all about chance.” US Geological Survey General Information Product 106, no. 4 (2010).

Carolyn Kousky & Erwann Michel-Kerjan, A Look at 35 Years of Flood Insurance Claims, Resoources 41–45 (2016).

References on Modeling Floods

Witold G Strupczewski, Krzysztof Kochanek & Ewa Bogdanowicz, On Return Periodof the Largest Historical Flood, 2 Journal of Geoscience and Environment Protection 144 (2014).