The Levee Effect: How Flood Damage Can Rise as Flood Probability Decreases - Reduce Flooding {"@context":"https://schema.org","@graph":[{"@type":"Article","@id":"https://reduceflooding.com/2026/03/08/the-levee-eff
The Levee Effect: How Flood Damage Can Rise as Flood Probability Decreases - Reduce Flooding
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Source: Reduce Flooding Blog - Bob Rehak
Date: 03/08/2026 10:00pm
Article Summary:
**The Levee Effect: How Flood Control Infrastructure Can Increase Catastrophic Flood Damage**
A phenomenon known as the “Levee Effect” explains how building flood-control infrastructure like levees and reservoirs can unintentionally increase overall flood damage over time. While such projects reduce the likelihood of frequent flooding and encourage development in newly protected areas, they also concentrate people and property in high-risk zones, leading to far greater losses when extreme events overwhelm the system. Historic disasters from the Mississippi River flood of 1927 to Hurricane Katrina illustrate how reduced flood probability can ultimately translate into higher catastrophic risk.
Read article here »
Date: 03/08/2026 10:00pm
Article Summary:
**The Levee Effect: How Flood Control Infrastructure Can Increase Catastrophic Flood Damage**
A phenomenon known as the “Levee Effect” explains how building flood-control infrastructure like levees and reservoirs can unintentionally increase overall flood damage over time. While such projects reduce the likelihood of frequent flooding and encourage development in newly protected areas, they also concentrate people and property in high-risk zones, leading to far greater losses when extreme events overwhelm the system. Historic disasters from the Mississippi River flood of 1927 to Hurricane Katrina illustrate how reduced flood probability can ultimately translate into higher catastrophic risk.
Read article here »