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The Shape of Regulation: 40 Years of Florida Flood Maps

Author

Listed:
  • Abigail Ostriker
  • Anna Russo

Abstract

Many regulations are geographically targeted. We study the evolution of the spatial targeting of floodplain regulation over four decades of regulatory map updates in Florida. We focus on changes in shape irregularity of regulated areas, measured using differences between regulated polygons and their convex hulls. While the regularity of mapped polygons is uncorrelated with development in initial maps, we observe decreases in regularity over time concentrated in highly developed geographies. These changes are uncorrelated with changes in risk due to adaptation. Our results highlight the possibility of endogenous regulation and the value of leveraging historical maps for empirical analysis.

Suggested Citation

  • Abigail Ostriker & Anna Russo, 2025. "The Shape of Regulation: 40 Years of Florida Flood Maps," AEA Papers and Proceedings, American Economic Association, vol. 115, pages 374-379, May.
    • Handle: RePEc:aea:apandp:v:115:y:2025:p:374-79
    DOI: 10.1257/pandp.20251036
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    More about this item

    JEL classification:

    • Q24 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Renewable Resources and Conservation - - - Land
    • Q28 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Renewable Resources and Conservation - - - Government Policy
    • Q54 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Environmental Economics - - - Climate; Natural Disasters and their Management; Global Warming
    • Q58 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Environmental Economics - - - Environmental Economics: Government Policy
    • R14 - Urban, Rural, Regional, Real Estate, and Transportation Economics - - General Regional Economics - - - Land Use Patterns
    • R38 - Urban, Rural, Regional, Real Estate, and Transportation Economics - - Real Estate Markets, Spatial Production Analysis, and Firm Location - - - Government Policy
    • R52 - Urban, Rural, Regional, Real Estate, and Transportation Economics - - Regional Government Analysis - - - Land Use and Other Regulations

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