Growth of Impervious Cover: Most Consistent Driver of Flooding Worldwide - Reduce Flooding {"@context":"https://schema.org","@graph":[{"@type":"Article","@id":"https://reduceflooding.com/2026/03/30/growth-of-imper
Growth of Impervious Cover: Most Consistent Driver of Flooding Worldwide - Reduce Flooding
{"@context":"https://schema.org","@graph":[{"@type":"Article","@id":"https://reduceflooding.com/2026/03/30/growth-of-imper
Source: Reduce Flooding Blog - Bob Rehak
Date: 03/30/2026 5:00pm
Article Summary:
**Urbanization and Impervious Cover Identified as Leading Global Cause of Increased Flooding**
Engineering research from multiple U.S. cities and international studies shows that expanding impervious surfaces like roads and rooftops is the most consistent human-driven cause of increased flooding, as urbanization accelerates runoff, raises peak flows, and boosts total flood volumes. Studies in places such as Atlanta and Dallas found that development significantly increased streamflow and flood frequency even without changes in rainfall, with moderate storms producing more severe impacts. Experts conclude that as cities grow, faster and higher flood peaks become more common, often doubling pre-development runoff levels.
Read article here »
Date: 03/30/2026 5:00pm
Article Summary:
**Urbanization and Impervious Cover Identified as Leading Global Cause of Increased Flooding**
Engineering research from multiple U.S. cities and international studies shows that expanding impervious surfaces like roads and rooftops is the most consistent human-driven cause of increased flooding, as urbanization accelerates runoff, raises peak flows, and boosts total flood volumes. Studies in places such as Atlanta and Dallas found that development significantly increased streamflow and flood frequency even without changes in rainfall, with moderate storms producing more severe impacts. Experts conclude that as cities grow, faster and higher flood peaks become more common, often doubling pre-development runoff levels.
Read article here »