Framing the Challenge of Urban Flooding in the United States

The National Academies of Sciences, Engineering, and Medicine presents the report Framing the Challenge of Urban Flooding in the United States. As of today, flooding poses the most significant economic risk and social impact in the United States, of all climate extremes and natural hazards. As a result of our climate crisis, the severity, intensity, and extent of flooding is increasing over time. Further, the book highlights how “…catastrophic flooding from recent hurricanes, including Superstorm Sandy in New York (2012) and Hurricane Harvey in Houston (2017), caused billions of dollars in property damage, adversely affected millions of people, and damaged the economic well-being of major metropolitan areas.” Between 2004 and 2014, major freshwater flood events cost an average of 70 lives and $9 billion USD annually in direct damage — excluding the cumulative impacts of frequent, small floods, which can be similar to infrequent, extreme floods. Examining real-world examples in metropolitan areas, such as New York and Houston, Framing the Challenge of Urban Flooding in the United States identifies similarities and differences in the root causes, adverse impacts, mitigation strategies, and unforeseen issues.

Contributor(s): National Academies of Sciences, Engineering, and Medicine; Policy and Global AffairsDivision on Earth and Life Studies; Program on Risk, Resilience, and Extreme Events; Water Science and Technology BoardCommittee on Urban Flooding in the United States

(Source: National Academies of Sciences, Engineering, and Medicine. 2019. Framing the Challenge of Urban Flooding in the United States. Washington, DC: The National Academies Press. https://doi.org/10.17226/25381.)

© 2023 National Academy of Sciences. All Rights Reserved.

About ClimaTwin®

ClimaTwin® is a leading climate risk intelligence solution for infrastructure assets and the built environment.

We empower infrastructure stakeholders to mitigate climate risks and assess adaptation actions across the total asset lifecycle. By connecting complex climate models and infrastructure digital twins, our solution enables engineers, owner-operators, and governments to aggregate, visualize, and analyze disparate datasets, revealing site-specific insights at a hyper-local scale. Benefits include 5-10x near-term returns and lifetime cost-avoidance by mitigating risks to systems, services, and societies.

To learn more about climate risk intelligence for your infrastructure assets, please visit www.climatwin.com today.

© 2023 ClimaTwin Corp.

ClimaTwin® is a registered trademark of ClimaTwin Corp. ClimaTwin Basic™, ClimaTwin Enterprise™, the ClimaTwin logo, and Climate Risk Intelligence for Infrastructure Digital Twins™ are trademarks of ClimaTwin Corp. All rights reserved.

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National Academies on Framing the Challenge of Urban Flooding

National Academies on Framing the Challenge of Urban Flooding

 

The National Academies of Sciences, Engineering, and Medicine presents the report Framing the Challenge of Urban Flooding in the United States. As of today, flooding poses the most significant economic risk and social impact in the United States, of all climate extremes and natural hazards. As a result of our climate crisis, the severity, intensity, and extent of flooding is increasing over time. Further, the book highlights how “…catastrophic flooding from recent hurricanes, including Superstorm Sandy in New York (2012) and Hurricane Harvey in Houston (2017), caused billions of dollars in property damage, adversely affected millions of people, and damaged the economic well-being of major metropolitan areas.” Between 2004 and 2014, major freshwater flood events cost an average of 70 lives and $9 billion USD annually in direct damage — excluding the cumulative impacts of frequent, small floods, which can be similar to infrequent, extreme floods. Examining real-world examples in metropolitan areas, such as New York and Houston, Framing the Challenge of Urban Flooding in the United States identifies similarities and differences in the root causes, adverse impacts, mitigation strategies, and unforeseen issues.

Contributor(s): National Academies of Sciences, Engineering, and Medicine; Policy and Global AffairsDivision on Earth and Life Studies; Program on Risk, Resilience, and Extreme Events; Water Science and Technology BoardCommittee on Urban Flooding in the United States

(Source: National Academies of Sciences, Engineering, and Medicine. 2019. Framing the Challenge of Urban Flooding in the United States. Washington, DC: The National Academies Press. https://doi.org/10.17226/25381.)

© 2023 National Academy of Sciences. All Rights Reserved.

About ClimaTwin®

ClimaTwin® is a leading climate risk intelligence solution for infrastructure assets and the built environment.

We empower infrastructure stakeholders to mitigate climate risks and assess adaptation actions across the total asset lifecycle. By connecting complex climate models and infrastructure digital twins, our solution enables engineers, owner-operators, and governments to aggregate, visualize, and analyze disparate datasets, revealing site-specific insights at a hyper-local scale. Benefits include 5-10x near-term returns and lifetime cost-avoidance by mitigating risks to systems, services, and societies.

To learn more about climate risk intelligence for your infrastructure assets, please visit www.climatwin.com today.

© 2023 ClimaTwin Corp.

ClimaTwin® is a registered trademark of ClimaTwin Corp. ClimaTwin Basic™, ClimaTwin Enterprise™, the ClimaTwin logo, and Climate Risk Intelligence for Infrastructure Digital Twins™ are trademarks of ClimaTwin Corp. All rights reserved.

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New flood load provisions to help protect against 500-year flood events

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New ASCE 7-22 Supplement on Flood Loads Now Features 500-year Flood Events

New flood load provisions to help protect against 500-year flood events

The American Society of Civil Engineers (ASCE, www.asce.org) released ASCE 7-22 Supplement on Flood Loads. ASCE’s most frequently used standard, ASCE/SEI 7-22: Minimum Design Loads and Associated Criteria for Buildings and Other Structures now features a new supplement, updated with new flood load provisions that protect against 500-year flood events. The previous ASCE/SEI 7-22 edition only included 100-year flood hazards.

As quoted in the ASCE press release on the ASCE 7-22 Supplement on Flood Loads, Ronald Hamburger, P.E., S.E., F.SEI, Senior Principal with Simpson Gumpertz & Heger Inc., and Chair of the ASCE 7-22 Committee states “ASCE continuously seeks to update its standards using the latest scientific and engineering knowledge, to assure the standards remain relevant to society’s needs and an appropriate basis for design and construction.”

Primary technical updates relative to future weather and climate extremes feature new requirements connecting flood hazard mitigation design to risk category, a feature consistent across the other environmental hazards in ASCE 7. Further, the four types of the intended use of the structure range from the least risk to human life in the event of a failure in Risk Category I structures to the most significant risk in Risk Category IV structures.

About ASCE 7: Minimum Design Loads and Associated Criteria for Buildings and Other Structures (ASCE/SEI 7-22)

“An integral part of building codes in the United States, ASCE/SEI 7, Minimum Design Loads and Associated Criteria for Buildings and Other Structures describes the means for determining design loads including dead, live, soil, flood, tsunami, snow, rain, atmospheric ice, seismic, and wind loads and their combinations for general structural design.  Structural engineers, architects, and building code officials will find the structural load requirements essential to their practice.”

© 2023 American Society of Civil Engineers. All rights reserved.

(Source: American Society of Civil Engineers)

About ClimaTwin®

ClimaTwin® is a leading climate risk intelligence solution for infrastructure assets and the built environment.

We empower infrastructure stakeholders to mitigate climate risks and assess adaptation actions across the total asset lifecycle. By connecting complex climate models and infrastructure digital twins, our solution enables engineers, owner-operators, and governments to aggregate, visualize, and analyze disparate datasets, revealing site-specific insights at a hyper-local scale. Benefits include 5-10x near-term returns and lifetime cost-avoidance by mitigating risks to systems, services, and societies.

To learn more about climate risk intelligence for your infrastructure assets, please visit www.climatwin.com today.

© 2023 ClimaTwin Corp. ClimaTwin® is a registered trademark of ClimaTwin Corp. ClimaTwin Basic™, ClimaTwin Enterprise™, the ClimaTwin logo, and Climate Risk Intelligence for Infrastructure Digital Twins™ are trademarks of ClimaTwin Corp. All rights reserved.

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