About 25% of all critical infrastructure in the U.S. is at risk of failure due to flooding, according to a new report by the First Street Foundation, a nonprofit research and technology group.
Nearly 2 million miles of road—roughly 23% of US roadways—are at risk of becoming impassable due to flooding, the report also found. Researchers examined five categories of infrastructure in the contiguous U.S., including the District of Columbia: Critical infrastructure; social infrastructure, including museums, government buildings and schools; roads; commercial properties; and residential properties.
Researchers examined estimates of operational flood risk from government agencies to determine the amount of flooding it would take to knock different types of facilities or services offline. They then overlaid the kinds of flood events that can be expected in an area at least once every two years.
Louisiana is home to six of the top 20 most at-risk counties in the country, making it the most vulnerable state. Though many coastal areas in other states are threatened, flood risk is also a threat in inland states. Areas such as McDowell County in West Virginia and Johnson County in Kentucky are among the most at-risk because of the growing threat of heavy rain.
Related Stories
Codes and Standards | Jun 27, 2018
Thirty nine San Francisco high rises at risk of collapse in major earthquake
Vulnerable buildings have welded columns and beams.
Codes and Standards | Jun 26, 2018
Boston enacts new climate resiliency rules for buildings
New policy is likely a first in the nation.
Codes and Standards | Jun 25, 2018
Integrated Project Delivery guide offered by Pankow Foundation
An Action Guide for Leaders offers answers to critical IPD questions.
Codes and Standards | Jun 21, 2018
New app said to automate code compliance
Startup offers plug-in that scans 3D models.
Codes and Standards | Jun 20, 2018
Home values and local tax revenues at risk from high tide flooding, scientists group says
Analysis of property data identifies communities prone to frequent flooding.
Codes and Standards | Jun 19, 2018
Structural engineered wood products exempt from new EPA formaldehyde ruling
Exempt products include structural plywood, oriented strand board (OSB).
Codes and Standards | Jun 18, 2018
Seattle City Council repeals controversial new per-worker tax on large employers
Measure was aimed at raising $50 million for homeless services, affordable housing.
Codes and Standards | Jun 14, 2018
Hardscape from development makes ‘1,000-year’ flood in Maryland worse
Impermeable concrete made it easier for water to overwhelm drainage system.
Codes and Standards | Jun 13, 2018
United States Resiliency Council announces support for Calif. earthquake resiliency bill
Measure would help cities identify structures that could fail in major quake.
Codes and Standards | Jun 12, 2018
Congestion pricing for cars is effective in reducing traffic, but a difficult sell
After three years, traffic congestion declined by 30% in London.
