Floods in the U.S.

Statistics report on floods in the United States

Floods in the U.S.

This report presents statistics and facts about floods in the United States. It provides an overview of the occurrence of flood events globally, in addition to key information on the scale of events to have hit the U.S. over the years, and the economic and social costs they incur.

While flood events may be caused by a variety of reasons, including high tides, storm surge, river overflow, and snow melt, one of the most frequently (and often most devasting) events are flash floods. These are caused by intense rainfall in a short time interval, combined with insufficient drainage.

This report is part of a series of reports on the impacts of climate change.

Table of contents

Overview

6
  • Basic Statistic Most natural disasters by country 2023
  • Premium Statistic Global rainfall anomaly 1901-2021
  • Basic Statistic Future changes in frequency of decadal heavy precipitation by temperature increase
  • Premium Statistic Global number of people affected by floods 1990-2022
  • Premium Statistic Global number of deaths caused by floods 1960-2022
  • Premium Statistic Share of major climate disaster costs in the U.S. 1980-2023, by event type

Scale

5
  • Premium Statistic Major flood events in the United States 1980-2022, by time period
  • Premium Statistic Number of declared flood disasters in the U.S. 1990-2022
  • Premium Statistic Land area with extreme single-day precipitation in the U.S. 1990-2022
  • Premium Statistic Annual precipitation anomaly in the United States 1990-2023
  • Premium Statistic Highest rainfall anomalies in the United States 2023, by state

Effects

8
  • Basic Statistic Number of fatalities caused by floods in the United States 1995-2022
  • Premium Statistic Monthly number of fatalities due to floods in the U.S. 2022-2023
  • Premium Statistic Number of flood fatalities in the U.S. 2022, by state
  • Basic Statistic Economic cost of major floods in the U.S. 1980-2023
  • Premium Statistic Most expensive flood disasters in the United States 1978-2022, by payouts
  • Basic Statistic Economic damage caused by floods in the United States 1995-2022
  • Premium Statistic Number of buildings at flood damage risk in the U.S. 2022, by state
  • Premium Statistic Building damage cost due to flood risk in the U.S. 2022, by state

Outlook

3
  • Premium Statistic Economic costs due to flood in commercial buildings in the U.S. 2022-2052
  • Premium Statistic Change in the number of buildings at flood risk in the U.S. 2022-2052, by state
  • Premium Statistic Change in damage costs due to building flood risk in the U.S. 2052, by state

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