The way the federal government analyzes intense rain events isn’t keeping up with the reality of climate change, and that has serious implications for infrastructure projects and the availability of, and rising cost of, flood insurance.
Severe rainstorms, sometimes described as “atmospheric rivers” or “torrential thunderstorms,” are making the concept of a “1-in-100-year flood event” obsolete, according to a report from First Street Foundation, an organization focused on weather risk research.
These events are occurring more frequently due to the impact of climate change, but federal rainfall analysis, managed by the National Oceanic and Atmospheric Administration, isn’t keeping up with the new weather conditions, First Street says.
Half the people in the U.S. live in a county where a 1-in-100-year flood is at least twice as likely now as it had been in the past, coming once every 50 years instead of every 100 years. In some areas, a so-called “1-in-100-year” rainfall could now happen far more frequently—as often as every 5 to 10 years.
The outdated analysis has serious implications for the way infrastructure projects are initiated and designed. And, because FEMA’s federal flood insurance program greatly underrepresents the number of people that could fall into FEMA’s Special Flood Hazard Areas, millions of Americans may be unaware of their current flood risk.
Inaccurate flood risk data due to underestimating the impact of rainfall also impacts the cost and availability of flood insurance—this is especially true for property that isn’t close to the ocean or inland bodies of water.
The government is working to remedy the situation, though. NOAA, as reported by CNN, says it is working on a revamped approach to its rainfall analysis that is expected to be completed in 2027.
Related Stories
| Jun 21, 2012
Brazilian engineering/construction firm Odebrecht sues Florida over ban on companies doing business in Cuba
Odebrecht Construction Inc., a Brazilian engineering and construction company, is suing the State of Florida over a new law that bans governments from hiring companies with business ties to Cuba.
| Jun 21, 2012
String of shattered glass balcony panels prompts call for code reform in Ontario
Since last summer, glass balconies have shattered at 13 different buildings in Toronto.
| Jun 21, 2012
California adds window film to building code
California is the first state to add window film into its building code. Window film, a polymer material, offers cost-effective energy savings.
| Jun 21, 2012
New ISO standard to improve environmental management of concrete
A new ISO standard will help the construction industry better manage the environmental impacts of concrete.
| Jun 21, 2012
On net-zero projects, Building Teams will be held accountable for energy-efficiency performance
The building team will be held accountable for how net-zero energy buildings perform two, five, and maybe ten years after completion.
| Jun 14, 2012
USGBC co-founder launches rating system for building product manufacturers
U.S. Green Building Council co-founder David Gottfried’s new venture, Regenerative Ventures, has established a rating system for building product manufacturers.
| Jun 14, 2012
Green standard set for single-ply roofing membrane
A sustainability standard has been established for single-ply roofing membranes used on commercial buildings.
| Jun 14, 2012
Minnesota Vikings stadium plan gets legislative go-ahead
Legislation that approved the construction of a new billion dollar stadium for the Minnesota Vikings passed the Minnesota legislature.
| Jun 14, 2012
Report alleges New York’s prevailing construction wages are miscalculated, costing billions
A miscalculation in how prevailing wages are calculated in New York reportedly costs the state $3 billion a year in public-infrastructure projects.
