The perception that the U.S. has not been able to curb development in flood-prone areas is mostly inaccurate, according to new research from climate adaptation experts.
A national survey of floodplain development between 2001 and 2019 found that fewer structures were built in floodplains than might be expected if cities were building at random. Data indicates that the average city now avoids new construction in floodplains, a finding that bucks conventional wisdom.
Communities in two states, Florida and Louisiana, are exceptions. These states are responsible for most of the floodplain construction in the U.S. this century. Much of the available land in these states is in either coastal or riverine floodplains, and the economies of both states largely depend on proximity to water.
Researchers focused on New Jersey and found that more than three-quarters of Garden State towns reduced floodplain development since 2000. About a quarter of the state’s communities eliminated floodplain development. They did through “routine municipal practices” such as zoning changes and permit denials.
A caveat to the research is that flood zones were delineated by Federal Emergency Management Agency flood insurance maps, which researchers say are outdated.
Related Stories
Resiliency | Sep 30, 2022
Designing buildings for wildfire defensibility
Wold Architects and Engineers' Senior Planner Ryan Downs, AIA, talks about how to make structures and communities more fire-resistant.
Building Team | Jun 13, 2022
Partnership rethinks emergency shelters to turn them into sustainable, resilient homes
Holcim and the Norman Foster Foundation have struck a partnership to rethink emergency shelters to turn them into sustainable and resilient homes.
Green Specifications | May 12, 2022
MG2’s Sustainable Materials Evaluation System
Learn how MG2’s Sustainable Materials Evaluation System helps clients, prospects, and staff choose the most environmentally feasible materials for their building projects. Candon Murphy, LEED GA, Assoc. IIDA, Design Lab Manager and Materials & Sustainability Specialist with MG2, speaks with BD+C Executive Editor Rob Cassidy.
Sponsored | BD+C University Course | May 5, 2022
Designing with architectural insulated metal wall panels
Insulated metal wall panels (IMPs) offer a sleek, modern, and lightweight envelope system that is highly customizable. This continuing education course explores the characteristics of insulated metal wall panels, including how they can offer a six-in-one design solution. Discussions also include design options, installation processes, code compliance, sustainability, and available warranties.
Sponsored | BD+C University Course | Apr 19, 2022
Multi-story building systems and selection criteria
This course outlines the attributes, functions, benefits, limits, and acoustic qualities of composite deck slabs. It reviews the three primary types of composite systems that represent the full range of long-span composite floor systems and examines the criteria for their selection, design, and engineering.
Wood | Apr 13, 2022
Mass timber: Multifamily’s next big building system
Mass timber construction experts offer advice on how to use prefabricated wood systems to help you reach for the heights with your next apartment or condominium project.
AEC Tech Innovation | Mar 9, 2022
Meet Emerge: WSP USA's new AEC tech incubator
Pooja Jain, WSP’s VP-Strategic Innovation, discusses the pilot programs her firm’s new incubator, Emerge, has initiated with four tech startup companies. Jain speaks with BD+C's John Caulfield about the four AEC tech firms to join Cohort 1 of the firm’s incubator.
Codes and Standards | Feb 21, 2022
More bad news on sea level rise for U.S. coastal areas
A new government report predicts sea levels in the U.S. of 10 to 12 inches higher by 2050, with some major cities on the East and Gulf coasts experiencing damaging floods even on sunny days.
Resiliency | Feb 15, 2022
Design strategies for resilient buildings
LEO A DALY's National Director of Engineering Kim Cowman takes a building-level look at resilient design.
Sponsored | Steel Buildings | Jan 25, 2022
Multifamily + Hospitality: Benefits of building in long-span composite floor systems
Long-span composite floor systems provide unique advantages in the construction of multi-family and hospitality facilities. This introductory course explains what composite deck is, how it works, what typical composite deck profiles look like and provides guidelines for using composite floor systems. This is a nano unit course.
