Abstract
Intense precipitation events are projected to rise across the southeast USA. The field of meteorology has expanded knowledge of urban precipitation, yet the uneven impacts of precipitation and flooding on specific communities, particularly in the USA, have received less attention. This paper addresses this gap. Using the 2010 Nashville Davidson County Tennessee flood event, the differential community impacts of flooding and their spatial variations are analyzed. Guided by social vulnerability and hazards methodologies, census block data from the 2012 American Community Survey, ArcGIS imagery and redlining maps are used to develop a social variability index using principal components analysis. Components were overlaid on all 98 Nashville census tracts for Davidson County to reveal that flood impacts were inequitably distributed with socioeconomically and racially marginalized households the most severely impacted from flooding. The consequence is that historical processes of segregation and marginalization continue to shape uneven flood impacts in Nashville. Examining the ways vulnerable populations experience severe precipitation events is needed particularly as extreme events are expected to intensify in the future.
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Acknowledgements
We thank Joshua Swiderski, Planning Tech 1, from the City of Nashville Map Office for his invaluable assistance providing flood damaged data for our analysis.
Funding
Funding was provided by Penn State Climate Science Research Experiences for Undergraduates Program with funding from grant AGS-1852428 of the National Science Foundation.
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GL designed the project, reviewed the literature, analyzed the results and helped write the manuscript, AR helped manage the project, assist with data analysis and manuscript writing, BK supervised the project components and provided input in the research design and writing, and MH conducted the data analysis.
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Appendices
Appendix 1: Variable list
Name | Label |
---|---|
B01001_002 | Estimate!!Total!!Male |
B01001_026 | Estimate!!Total!!Female |
B03002_002 | Estimate!!Total!!Not Hispanic or Latino |
B03002_003 | Estimate!!Total!!Not Hispanic or Latino!!White alone |
B03002_004 | Estimate!!Total!!Not Hispanic or Latino!!Black or African American alone |
B03002_005 | Estimate!!Total!!Not Hispanic or Latino!!American Indian and Alaska Native alone |
B03002_006 | Estimate!!Total!!Not Hispanic or Latino!!Asian alone |
B03002_008 | Estimate!!Total!!Not Hispanic or Latino!!Some other race alone |
B03002_009 | Estimate!!Total!!Not Hispanic or Latino!!Two or more races |
B03002_010 | Estimate!!Total!!Not Hispanic or Latino!!Two or more races!!Two races including Some other race |
B03002_011 | Estimate!!Total!!Not Hispanic or Latino!!Two or more races!!Two races excluding Some other race, and three or more races |
B03002_012 | Estimate!!Total!!Hispanic or Latino |
B03002_013 | Estimate!!Total!!Hispanic or Latino!!White alone |
B03002_014 | Estimate!!Total!!Hispanic or Latino!!Black or African American alone |
B03002_015 | Estimate!!Total!!Hispanic or Latino!!American Indian and Alaska Native alone |
B03002_016 | Estimate!!Total!!Hispanic or Latino!!Asian alone |
B03002_017 | Estimate!!Total!!Hispanic or Latino!!Native Hawaiian and Other Pacific Islander alone |
B03002_018 | Estimate!!Total!!Hispanic or Latino!!Some other race alone |
B03002_019 | Estimate!!Total!!Hispanic or Latino!!Two or more races |
B03002_020 | Estimate!!Total!!Hispanic or Latino!!Two or more races!!Two races including Some other race |
B03002_021 | Estimate!!Total!!Hispanic or Latino!!Two or more races!!Two races excluding Some other race, and three or more races |
B03003_003 | Estimate!!Total!!Hispanic or Latino |
B19013_001 | Estimate!!Median household income in the past 12 months (in 2012 inflation-adjusted dollars) |
B23024_001 | Estimate!!Total |
B23024_002 | Estimate!!Total!!Income in the past 12 months below poverty level |
B23024_003 | Estimate!!Total!!Income in the past 12 months below poverty level!!With a disability |
B23024_004 | Estimate!!Total!!Income in the past 12 months below poverty level!!With a disability!!In labor force |
B23024_006 | Estimate!!Total!!Income in the past 12 months below poverty level!!With a disability!!In labor force!!Civilian |
B23024_007 | Estimate!!Total!!Income in the past 12 months below poverty level!!With a disability!!In labor force!!Civilian!!Employed |
B23024_008 | Estimate!!Total!!Income in the past 12 months below poverty level!!With a disability!!In labor force!!Civilian!!Unemployed |
B23024_009 | Estimate!!Total!!Income in the past 12 months below poverty level!!With a disability!!Not in labor force |
B23024_018 | Estimate!!Total!!Income in the past 12 months at or above poverty level!!With a disability |
B23024_019 | Estimate!!Total!!Income in the past 12 months at or above poverty level!!With a disability!!In labor force |
B23024_021 | Estimate!!Total!!Income in the past 12 months at or above poverty level!!With a disability!!In labor force!!Civilian |
B23024_022 | Estimate!!Total!!Income in the past 12 months at or above poverty level!!With a disability!!In labor force!!Civilian!!Employed |
B23024_023 | Estimate!!Total!!Income in the past 12 months at or above poverty level!!With a disability!!In labor force!!Civilian!!Unemployed |
B23024_024 | Estimate!!Total!!Income in the past 12 months at or above poverty level!!With a disability!!Not in labor force |
B23025_001 | Estimate!!Total |
B23025_002 | Estimate!!Total!!In labor force |
B23025_003 | Estimate!!Total!!In labor force!!Civilian labor force |
B23025_004 | Estimate!!Total!!In labor force!!Civilian labor force!!Employed |
B23025_005 | Estimate!!Total!!In labor force!!Civilian labor force!!Unemployed |
B23025_006 | Estimate!!Total!!In labor force!!Armed Forces |
B23025_007 | Estimate!!Total!!Not in labor force |
B25008_002 | Estimate!!Total!!Owner occupied |
B25008_003 | Estimate!!Total!!Renter occupied |
B25037_001 | Estimate!!Median year structure built!!Total |
B25037_002 | Estimate!!Median year structure built!!Owner occupied |
Appendix 2: PCA results
Principal component | Eigenvalue | Variance | Cumulative variance |
---|---|---|---|
1 | 12.52399 | 27.22607 | 27.22607 |
2 | 6.372886 | 13.8541 | 41.08017 |
3 | 4.329791 | 9.41259 | 50.49276 |
4 | 3.454636 | 7.510079 | 58.00284 |
5 | 2.592146 | 5.6351 | 63.63794 |
6 | 2.343152 | 5.093808 | 68.73175 |
7 | 1.674747 | 3.640755 | 72.3725 |
8 | 1.589606 | 3.455665 | 75.82817 |
9 | 1.502506 | 3.266318 | 79.09449 |
10 | 1.235214 | 2.685248 | 81.77973 |
11 | 1.148833 | 2.497463 | 84.2772 |
12 | 1.0792 | 2.346088 | 86.62328 |
13 | 0.852742 | 1.853786 | 88.47707 |
14 | 0.794241 | 1.72661 | 90.20368 |
15 | 0.772875 | 1.680162 | 91.88384 |
16 | 0.685711 | 1.490676 | 93.37452 |
17 | 0.537324 | 1.168095 | 94.54261 |
18 | 0.502264 | 1.091878 | 95.63449 |
19 | 0.40581 | 0.882195 | 96.51669 |
20 | 0.379405 | 0.824793 | 97.34148 |
21 | 0.315012 | 0.68481 | 98.02629 |
22 | 0.255458 | 0.555343 | 98.58163 |
23 | 0.192511 | 0.418501 | 99.00013 |
24 | 0.149977 | 0.326038 | 99.32617 |
25 | 0.091905 | 0.199793 | 99.52596 |
26 | 0.080002 | 0.173917 | 99.69988 |
27 | 0.050591 | 0.10998 | 99.80986 |
28 | 0.047568 | 0.103408 | 99.91327 |
29 | 0.028709 | 0.06241 | 99.97568 |
30 | 0.009323 | 0.020268 | 99.99595 |
31 | 0.001864 | 0.004052 | 100 |
32 | 6.14E−31 | 1.33E−30 | 100 |
33 | 1.00E−31 | 2.18E−31 | 100 |
34 | 1.00E−31 | 2.18E−31 | 100 |
35 | 1.00E−31 | 2.18E−31 | 100 |
36 | 1.00E−31 | 2.18E−31 | 100 |
37 | 1.00E−31 | 2.18E−31 | 100 |
38 | 1.00E−31 | 2.18E−31 | 100 |
39 | 1.00E−31 | 2.18E−31 | 100 |
40 | 1.00E−31 | 2.18E−31 | 100 |
41 | 1.00E−31 | 2.18E−31 | 100 |
42 | 1.00E−31 | 2.18E−31 | 100 |
43 | 1.00E−31 | 2.18E−31 | 100 |
44 | 1.00E−31 | 2.18E−31 | 100 |
45 | 1.00E−31 | 2.18E−31 | 100 |
46 | 1.00E−31 | 2.18E−31 | 100 |
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Linscott, G., Rishworth, A., King, B. et al. Uneven experiences of urban flooding: examining the 2010 Nashville flood. Nat Hazards 110, 629–653 (2022). https://doi.org/10.1007/s11069-021-04961-w
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DOI: https://doi.org/10.1007/s11069-021-04961-w