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Impacts of Urbanization on the Riverine Flooding in Major Cities Across the Eastern United States


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Created: May 30, 2024 at 10:03 p.m.
Last updated: Dec 20, 2024 at 1:24 a.m. (Metadata update)
Published date: Dec 19, 2024 at 2:19 p.m.
DOI: 10.4211/hs.fa1eb51c8756427d9fc50c415b714557
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Content types: Geographic Feature Content  CSV Content 
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Abstract

The increase in the societal and economic impacts of flooding across the eastern United States has brought attention to the potential link between long-term increases in urban areas and changes in the watersheds’ flood response. One outstanding challenge is to isolate the effects of land cover changes from other flood-related factors. To advance our understanding of these processes and their nexus, we utilize a statistical framework in which we use different parameterizations of the Generalized Pareto distribution (GPD) to model sub-daily peak-over-thresholds (POT) events at 102 stream gauges in the following metropolitan areas across the eastern United States: Boston, New York, Philadelphia, Baltimore, Charlotte, Atlanta, Houston, and Tampa. While we keep the shape parameter constant, we allow the scale parameter to: 1) be constant; 2) depend on hourly accumulated rainfall; or 3) be dependent on a combination of hourly accumulated rainfall and the temporal changes in the percentage of the watershed’s developed land. Based on our modeling results, we select the model with the land change as predictor in only 3% of the watersheds. Moreover, the model configuration in which rainfall is the only predictor is selected the most frequently (~80% of the sites) across the eight metropolitan regions. Therefore, our findings indicate that the key flood driver in urban basins across the eastern United States is rainfall, without clear evidence linking long-term changes of impervious area (i.e., urbanization) and the watersheds’ flood response.

Subject Keywords

Coverage

Spatial

Coordinate System/Geographic Projection:
WGS 84 EPSG:4326
Coordinate Units:
Decimal degrees
North Latitude
48.8141°
East Longitude
-53.7891°
South Latitude
21.7901°
West Longitude
-99.4922°

Content

ReadMe.txt

Observations:

1. The NWALT files can be downloaded from the link below:

https://www.sciencebase.gov/catalog/item/631405bad34e36012efa3040

2. NLCD files are available on the following link:

https://www.sciencebase.gov/catalog/item/6345b637d34e342aee0863aa

3. The plotting script associated with Figure S11 is embedded on the script #8 of this repository

Data Services

The following web services are available for data contained in this resource. Geospatial Feature and Raster data are made available via Open Geospatial Consortium Web Services. The provided links can be copied and pasted into GIS software to access these data. Multidimensional NetCDF data are made available via a THREDDS Data Server using remote data access protocols such as OPeNDAP. Other data services may be made available in the future to support additional data types.

Credits

Funding Agencies

This resource was created using funding from the following sources:
Agency Name Award Title Award Number
U.S. National Science Foundation EAR‐1840742

Contributors

People or Organizations that contributed technically, materially, financially, or provided general support for the creation of the resource's content but are not considered authors.

Name Organization Address Phone Author Identifiers
Gabriele Villarini Princeton University

How to Cite

Amorim, R. (2024). Impacts of Urbanization on the Riverine Flooding in Major Cities Across the Eastern United States, HydroShare, https://doi.org/10.4211/hs.fa1eb51c8756427d9fc50c415b714557

This resource is shared under the Creative Commons Attribution CC BY.

http://creativecommons.org/licenses/by/4.0/
CC-BY

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