Comparison of Neighborhood-Scale, Residential Property Flood-Loss Assessment Methodologies
Leading flood loss estimation models include Federal Emergency Management Agency’s (FEMA’s) Hazus, FEMA’s Flood Assessment Structure Tool (FAST), and (U.S.) Hydrologic Engineering Center’s Flood Impact Analysis (HEC-FIA), with each requiring different data input. No research to date has compared the...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2021-10-01
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| Series: | Frontiers in Environmental Science |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fenvs.2021.734294/full |
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| author | Rubayet Bin Mostafiz Carol J. Friedland Md Asif Rahman Robert V. Rohli Robert V. Rohli Eric Tate Nazla Bushra Arash Taghinezhad |
| author_facet | Rubayet Bin Mostafiz Carol J. Friedland Md Asif Rahman Robert V. Rohli Robert V. Rohli Eric Tate Nazla Bushra Arash Taghinezhad |
| author_sort | Rubayet Bin Mostafiz |
| collection | DOAJ |
| description | Leading flood loss estimation models include Federal Emergency Management Agency’s (FEMA’s) Hazus, FEMA’s Flood Assessment Structure Tool (FAST), and (U.S.) Hydrologic Engineering Center’s Flood Impact Analysis (HEC-FIA), with each requiring different data input. No research to date has compared the resulting outcomes from such models at a neighborhood scale. This research examines the building and content loss estimates by Hazus Level 2, FAST, and HEC-FIA, over a levee-protected census block in Metairie, in Jefferson Parish, Louisiana. Building attribute data in National Structure Inventory (NSI) 2.0 are compared against “best available data” (BAD) collected at the individual building scale from Google Street View, Jefferson Parish building inventory, and 2019 National Building Cost Manual, to assess the sensitivity of input building inventory selection. Results suggest that use of BAD likely enhances flood loss estimation accuracy over existing reliance on default data in the software or from a national data set that generalizes over a broad scale. Although the three models give similar mean (median) building and content loss, Hazus Level 2 results diverge from those produced by FAST and HEC-FIA at the individual building level. A statistically significant difference in mean (median) building loss exists, but no significant difference is found in mean (median) content loss, between building inventory input (i.e., NSI 2.0 vs BAD), but both the building and content loss vary at the individual building scale due to difference in building-inventory-reported foundation height, foundation type, number of stories, replacement cost, and content cost. Moreover, building loss estimation also differs significantly by depth-damage function (DDF), for flood depths corresponding with the longest return periods, with content loss differing significantly by DDF at all return periods tested, from 10 to 500 years. Knowledge of the extent of estimated differences aids in understanding the degree of uncertainty in flood loss estimation. Much like the real estate industry uses comparable home values to appraise a home, flood loss planners should use multiple models to estimate flood-related losses. Moreover, results from this study can be used as a baseline for assessing losses from other hazards, thereby enhancing protection of human life and property. |
| first_indexed | 2024-12-21T04:15:04Z |
| format | Article |
| id | doaj.art-00c7d92a8e5c4edc97db780ae6c9c8f9 |
| institution | Directory Open Access Journal |
| issn | 2296-665X |
| language | English |
| last_indexed | 2024-12-21T04:15:04Z |
| publishDate | 2021-10-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Environmental Science |
| spelling | doaj.art-00c7d92a8e5c4edc97db780ae6c9c8f92022-12-21T19:16:20ZengFrontiers Media S.A.Frontiers in Environmental Science2296-665X2021-10-01910.3389/fenvs.2021.734294734294Comparison of Neighborhood-Scale, Residential Property Flood-Loss Assessment MethodologiesRubayet Bin Mostafiz0Carol J. Friedland1Md Asif Rahman2Robert V. Rohli3Robert V. Rohli4Eric Tate5Nazla Bushra6Arash Taghinezhad7Department of Oceanography and Coastal Sciences, College of the Coast and Environment, Louisiana State University, Baton Rouge, LA, United StatesBert S. Turner Department of Construction Management, College of Engineering, Louisiana State University, Baton Rouge, LA, United StatesDepartment of Geographical and Sustainability Sciences, College of Liberal Arts and Sciences, University of Iowa, Iowa City, IA, United StatesDepartment of Oceanography and Coastal Sciences, College of the Coast and Environment, Louisiana State University, Baton Rouge, LA, United StatesDepartment Coastal Studies Institute, Louisiana State University, Baton Rouge, LA, United StatesDepartment of Geographical and Sustainability Sciences, College of Liberal Arts and Sciences, University of Iowa, Iowa City, IA, United StatesDepartment of Oceanography and Coastal Sciences, College of the Coast and Environment, Louisiana State University, Baton Rouge, LA, United StatesBert S. Turner Department of Construction Management, College of Engineering, Louisiana State University, Baton Rouge, LA, United StatesLeading flood loss estimation models include Federal Emergency Management Agency’s (FEMA’s) Hazus, FEMA’s Flood Assessment Structure Tool (FAST), and (U.S.) Hydrologic Engineering Center’s Flood Impact Analysis (HEC-FIA), with each requiring different data input. No research to date has compared the resulting outcomes from such models at a neighborhood scale. This research examines the building and content loss estimates by Hazus Level 2, FAST, and HEC-FIA, over a levee-protected census block in Metairie, in Jefferson Parish, Louisiana. Building attribute data in National Structure Inventory (NSI) 2.0 are compared against “best available data” (BAD) collected at the individual building scale from Google Street View, Jefferson Parish building inventory, and 2019 National Building Cost Manual, to assess the sensitivity of input building inventory selection. Results suggest that use of BAD likely enhances flood loss estimation accuracy over existing reliance on default data in the software or from a national data set that generalizes over a broad scale. Although the three models give similar mean (median) building and content loss, Hazus Level 2 results diverge from those produced by FAST and HEC-FIA at the individual building level. A statistically significant difference in mean (median) building loss exists, but no significant difference is found in mean (median) content loss, between building inventory input (i.e., NSI 2.0 vs BAD), but both the building and content loss vary at the individual building scale due to difference in building-inventory-reported foundation height, foundation type, number of stories, replacement cost, and content cost. Moreover, building loss estimation also differs significantly by depth-damage function (DDF), for flood depths corresponding with the longest return periods, with content loss differing significantly by DDF at all return periods tested, from 10 to 500 years. Knowledge of the extent of estimated differences aids in understanding the degree of uncertainty in flood loss estimation. Much like the real estate industry uses comparable home values to appraise a home, flood loss planners should use multiple models to estimate flood-related losses. Moreover, results from this study can be used as a baseline for assessing losses from other hazards, thereby enhancing protection of human life and property.https://www.frontiersin.org/articles/10.3389/fenvs.2021.734294/fullflood modelinghazusflood assessment structure toolHEC-FIAbuilding loss assessmentbuilding content loss assessment |
| spellingShingle | Rubayet Bin Mostafiz Carol J. Friedland Md Asif Rahman Robert V. Rohli Robert V. Rohli Eric Tate Nazla Bushra Arash Taghinezhad Comparison of Neighborhood-Scale, Residential Property Flood-Loss Assessment Methodologies Frontiers in Environmental Science flood modeling hazus flood assessment structure tool HEC-FIA building loss assessment building content loss assessment |
| title | Comparison of Neighborhood-Scale, Residential Property Flood-Loss Assessment Methodologies |
| title_full | Comparison of Neighborhood-Scale, Residential Property Flood-Loss Assessment Methodologies |
| title_fullStr | Comparison of Neighborhood-Scale, Residential Property Flood-Loss Assessment Methodologies |
| title_full_unstemmed | Comparison of Neighborhood-Scale, Residential Property Flood-Loss Assessment Methodologies |
| title_short | Comparison of Neighborhood-Scale, Residential Property Flood-Loss Assessment Methodologies |
| title_sort | comparison of neighborhood scale residential property flood loss assessment methodologies |
| topic | flood modeling hazus flood assessment structure tool HEC-FIA building loss assessment building content loss assessment |
| url | https://www.frontiersin.org/articles/10.3389/fenvs.2021.734294/full |
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