Coastal flooding - Cities and FUAs — Built-up area exposure to in Okayama
Okayama: Coastal flooding - Cities and FUAs — Built-up area exposure to was 0.7448 Percentage of built-up area in 2022. ▲ Rising
Coastal flooding - Cities and FUAs — Built-up area exposure to in Okayama, 2000–2022
Source: Organisation for Economic Co-operation and Development. Measured in Percentage of built-up area.
Analysis
In 2022, coastal flooding - cities and fuas — built-up area exposure to in Okayama stood at 0.7448 Percentage of built-up area.
Compared with earlier readings it is up 6.6% on the previous year and up 0.7% over ten years.
Over the whole period, coastal flooding - cities and fuas — built-up area exposure to in Okayama peaked at 0.8722 Percentage of built-up area in 2006 and was at its lowest, 0.3173 Percentage of built-up area, in 2004.
That places Okayama 117th out of 1315 regions with data for 2022, putting it in the top 10%.
The long-run direction has been consistently rising across the 23 years of available data.
Coastal flooding - Cities and FUAs — Built-up area exposure to in Okayama, year by year
| Year | Percentage of built-up area | Change |
|---|---|---|
| 2000 | 0.3533 Percentage of built-up area | — |
| 2001 | 0.3448 Percentage of built-up area | -2.4% |
| 2002 | 0.3337 Percentage of built-up area | -3.2% |
| 2003 | 0.3237 Percentage of built-up area | -3.0% |
| 2004 | 0.3173 Percentage of built-up area | -2.0% |
| 2005 | 0.3983 Percentage of built-up area | +25.5% |
| 2006 | 0.8722 Percentage of built-up area | +119.0% |
| 2007 | 0.8148 Percentage of built-up area | -6.6% |
| 2008 | 0.789 Percentage of built-up area | -3.2% |
| 2009 | 0.7581 Percentage of built-up area | -3.9% |
| 2010 | 0.7191 Percentage of built-up area | -5.1% |
| 2011 | 0.7531 Percentage of built-up area | +4.7% |
| 2012 | 0.7393 Percentage of built-up area | -1.8% |
| 2013 | 0.7331 Percentage of built-up area | -0.8% |
| 2014 | 0.7153 Percentage of built-up area | -2.4% |
| 2015 | 0.712 Percentage of built-up area | -0.5% |
| 2016 | 0.7097 Percentage of built-up area | -0.3% |
| 2017 | 0.7083 Percentage of built-up area | -0.2% |
| 2018 | 0.7078 Percentage of built-up area | -0.1% |
| 2019 | 0.7069 Percentage of built-up area | -0.1% |
| 2020 | 0.7069 Percentage of built-up area | +0.0% |
| 2021 | 0.6988 Percentage of built-up area | -1.1% |
| 2022 | 0.7448 Percentage of built-up area | +6.6% |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 2000s | 0.5305 Percentage of built-up area | 0.3173 Percentage of built-up area | 0.8722 Percentage of built-up area | 10 |
| 2010s | 0.7205 Percentage of built-up area | 0.7069 Percentage of built-up area | 0.7531 Percentage of built-up area | 10 |
| 2020s | 0.7168 Percentage of built-up area | 0.6988 Percentage of built-up area | 0.7448 Percentage of built-up area | 3 |
More reference data data for Okayama
- Cooling and heating degree days - Cities and FUAs — Cooling degree 492.61 Degree days (2025)
- Cooling and heating degree days - Cities and FUAs — Change in cooling 139.45 Degree days (2025)
- Cooling and heating degree days - Cities and FUAs 1,211 Degree days (2025)
- Cooling and heating degree days - Cities and FUAs — Change in heating -182.32 Degree days (2025)
- Precipitation - Cities and FUAs — Extreme precipitation days 31.33 Days per year (2024)
- Precipitation - Cities and FUAs — Change in extreme precipitation 13.28 Days per year (2024)
- Wind threats - Cities and FUAs — Exposure to wind threats 0 Percentage of area (2023)
- Internet speed - Cities and FUAs — Downloading speed -8.1 Percentage of national value (2025)
- Internet speed - Cities and FUAs — Uploading speed -13.3 Percentage of national value (2025)
Frequently asked questions
- What is coastal flooding - cities and fuas — built-up area exposure to in Okayama?
- Coastal flooding - cities and fuas — built-up area exposure to in Okayama was 0.7448 Percentage of built-up area in 2022, according to Organisation for Economic Co-operation and Development.
- What is the highest coastal flooding - cities and fuas — built-up area exposure to recorded in Okayama?
- The highest recorded value was 0.8722 Percentage of built-up area in 2006.
- What is the lowest coastal flooding - cities and fuas — built-up area exposure to recorded in Okayama?
- The lowest recorded value was 0.3173 Percentage of built-up area in 2004.
- How does Okayama rank for coastal flooding - cities and fuas — built-up area exposure to?
- Okayama ranks 117th out of 1315 regions with data for 2022.
- Is coastal flooding - cities and fuas — built-up area exposure to rising or falling in Okayama?
- Over the last ten years it is up 0.7%. The long-run trend across the full record is rising.
- Where does this Okayama data come from?
- The figures come from Organisation for Economic Co-operation and Development, published as part of Coastal flooding - Cities and FUAs — Built-up area exposure to coastal flooding. Statizoid updates them automatically from the source API.
Download this data
CSV · JSON — 23 observations, free to reuse under OECD Terms and Conditions (attribution required).
About this data
This dataset provides indicators of population and built-up exposure to coastal floods. Data sources and methodology Coastal flooding indicators are estimated using the Global coastal flood hazard maps (Muis, S. et al., 2016). This dataset provides the extent of coastal floods for different return periods (10 to 100 years) with a 1-kilometre resolution. A return period corresponds to the estimated time interval between floods of similar intensity. Built-up area exposure to coastal floods is computed by intersecting this map with Copernius annual land cover data (Copernicus Climate Change Service, Climate Data Store, 2019) and population exposure is computed using the Global Human Settlement Population layer (European Commission, GHSL Data Package 2023). Harmonised international hazard models are used to ensure global comparability, consistent modelling assumptions across countries, and complete subnational coverage. These estimates may differ from official subnational flood risk statistics due to differences in methodological approaches - such as the use of global, modelled top down hazard maps versus national hydrological models or administrative flood zone delineations - as well as variations in input data sources, spatial resolution, and hydraulic modelling techniques. Defining FUAs and cities The OECD, in cooperation with the EU, has developed a harmonised definition of functional urban areas (FUAs) to capture the economic and functional reach of cities based on daily commuting patterns (OECD, 2012). FUAs consist of: A city – defined by urban centres in the degree of urbanisation, adapted to the closest local administrative units to define a city. A commuting zone – including all local areas where at least 15% of employed residents work in the city. The delineation process includes: Assigning municipalities surrounded by a single FUA to that FUA. Excluding non-contiguous municipalities. The correspondence table between SAUs and FUAs/cities is available in parquet and csv format. The definition identifies 1 272 FUAs and 1 269 cities in all OECD member countries except Costa Rica and three accession countries. Cite this dataset OECD Regions, cities and local areas database (Coastal flooding - Cities and FUAs), http://oe.cd/geostats Further information OECD Local Data Portal OECD Regions and Cities at a Glance For questions and/or comments, please email CitiesStat@oecd.org