Historical exposure to drought — Land soil moisture anomaly in Guam
Guam: Historical exposure to drought — Land soil moisture anomaly was 0.5909 Percentage change in 2025. ◆ Volatile
Historical exposure to drought — Land soil moisture anomaly in Guam, 1950–2025
Source: Organisation for Economic Co-operation and Development. Measured in Percentage change.
Analysis
In 2025, historical exposure to drought — land soil moisture anomaly in Guam stood at 0.5909 Percentage change.
That represents a change of up 119.0% on the previous year and down 85.8% over ten years.
Over the whole period, historical exposure to drought — land soil moisture anomaly in Guam peaked at 20.62 Percentage change in 1963 and was at its lowest, -16.82 Percentage change, in 1993.
Guam ranks 45th of 191 countries on this measure, in the top quarter.
The series is highly variable year to year, so single readings are best treated with caution.
Historical exposure to drought — Land soil moisture anomaly in Guam, year by year
| Year | Percentage change | Change |
|---|---|---|
| 1950 | -9.87 Percentage change | — |
| 1951 | 1.71 Percentage change | -117.3% |
| 1952 | -9.22 Percentage change | -640.7% |
| 1953 | -2.82 Percentage change | -69.5% |
| 1954 | -0.8447 Percentage change | -70.0% |
| 1955 | 10.49 Percentage change | -1341.3% |
| 1956 | 4.52 Percentage change | -56.9% |
| 1957 | -5 Percentage change | -210.7% |
| 1958 | -1.83 Percentage change | -63.4% |
| 1959 | 3.17 Percentage change | -273.4% |
| 1960 | 12.67 Percentage change | +299.7% |
| 1961 | 16.15 Percentage change | +27.5% |
| 1962 | 8.36 Percentage change | -48.2% |
| 1963 | 20.62 Percentage change | +146.6% |
| 1964 | -0.6928 Percentage change | -103.4% |
| 1965 | 5.58 Percentage change | -905.3% |
| 1966 | 3.6 Percentage change | -35.5% |
| 1967 | 10.99 Percentage change | +205.3% |
| 1968 | -2.58 Percentage change | -123.5% |
| 1969 | -8.1 Percentage change | +214.3% |
| 1970 | -2.25 Percentage change | -72.2% |
| 1971 | 2.24 Percentage change | -199.3% |
| 1972 | -5.07 Percentage change | -326.6% |
| 1973 | -10.06 Percentage change | +98.2% |
| 1974 | 8.07 Percentage change | -180.2% |
| 1975 | -3.29 Percentage change | -140.7% |
| 1976 | 6.63 Percentage change | -302.0% |
| 1977 | -6.64 Percentage change | -200.1% |
| 1978 | -3.31 Percentage change | -50.1% |
| 1979 | 2.48 Percentage change | -174.8% |
| 1980 | 6.27 Percentage change | +153.2% |
| 1981 | 4.47 Percentage change | -28.8% |
| 1982 | -1.76 Percentage change | -139.5% |
| 1983 | -14.57 Percentage change | +726.5% |
| 1984 | 1.63 Percentage change | -111.2% |
| 1985 | 6.71 Percentage change | +311.5% |
| 1986 | 10.11 Percentage change | +50.7% |
| 1987 | -11.49 Percentage change | -213.8% |
| 1988 | -4.78 Percentage change | -58.4% |
| 1989 | 4.71 Percentage change | -198.5% |
| 1990 | -0.1191 Percentage change | -102.5% |
| 1991 | 0.1777 Percentage change | -249.2% |
| 1992 | -12.39 Percentage change | -7071.0% |
| 1993 | -16.82 Percentage change | +35.7% |
| 1994 | 4.53 Percentage change | -127.0% |
| 1995 | -0.4824 Percentage change | -110.6% |
| 1996 | 4.44 Percentage change | -1021.4% |
| 1997 | 3.28 Percentage change | -26.2% |
| 1998 | -14.05 Percentage change | -528.5% |
| 1999 | 4.87 Percentage change | -134.7% |
| 2000 | 0.3269 Percentage change | -93.3% |
| 2001 | -0.6776 Percentage change | -307.3% |
| 2002 | 4.17 Percentage change | -715.7% |
| 2003 | 7.11 Percentage change | +70.3% |
| 2004 | 7.56 Percentage change | +6.3% |
| 2005 | 7.09 Percentage change | -6.2% |
| 2006 | 0.0465 Percentage change | -99.3% |
| 2007 | -0.2801 Percentage change | -702.7% |
| 2008 | 2.3 Percentage change | -920.8% |
| 2009 | 8.21 Percentage change | +257.2% |
| 2010 | -4.3 Percentage change | -152.4% |
| 2011 | 13.11 Percentage change | -404.9% |
| 2012 | 3.54 Percentage change | -73.0% |
| 2013 | 0.8712 Percentage change | -75.4% |
| 2014 | 9.82 Percentage change | +1026.8% |
| 2015 | 4.15 Percentage change | -57.7% |
| 2016 | -9.17 Percentage change | -320.8% |
| 2017 | 5.5 Percentage change | -159.9% |
| 2018 | 7.46 Percentage change | +35.7% |
| 2019 | 4.92 Percentage change | -34.0% |
| 2020 | -0.2698 Percentage change | -105.5% |
| 2021 | 2.87 Percentage change | -1164.0% |
| 2022 | 1.7 Percentage change | -40.9% |
| 2023 | 12.27 Percentage change | +623.4% |
| 2024 | -3.11 Percentage change | -125.3% |
| 2025 | 0.5909 Percentage change | -119.0% |
Guam compared with similar countries
- Guam's 0.5909 Percentage change is above the median for high income countries, which is -1.98 Percentage change. (65 countries reporting)
- Guam's 0.5909 Percentage change is above the median for East Asia & Pacific, which is 0.1661 Percentage change, 3.6× the median. (24 countries reporting)
Biggest year-on-year movements
Years where Historical exposure to drought — Land soil moisture anomaly in Guam changed far more than this series normally does. A large move can be a real event or a change in how the figure was measured — the source note below says who published it.
| Year | Change | From | To |
|---|---|---|---|
| 1992 | -7071.0% | 0.1777 Percentage change | -12.39 Percentage change |
| 1955 | +1341.3% | -0.8447 Percentage change | 10.49 Percentage change |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1950s | -0.9702 Percentage change | -9.87 Percentage change | 10.49 Percentage change | 10 |
| 1960s | 6.66 Percentage change | -8.1 Percentage change | 20.62 Percentage change | 10 |
| 1970s | -1.12 Percentage change | -10.06 Percentage change | 8.07 Percentage change | 10 |
| 1980s | 0.1272 Percentage change | -14.57 Percentage change | 10.11 Percentage change | 10 |
| 1990s | -2.66 Percentage change | -16.82 Percentage change | 4.87 Percentage change | 10 |
| 2000s | 3.59 Percentage change | -0.6776 Percentage change | 8.21 Percentage change | 10 |
| 2010s | 3.59 Percentage change | -9.17 Percentage change | 13.11 Percentage change | 10 |
| 2020s | 2.34 Percentage change | -3.11 Percentage change | 12.27 Percentage change | 6 |
Countries ranked near Guam
More environment data for Guam
- Agricultural land — Area, annual growth rate 0 % change on previous year (2024)
- Arable land — Area, annual growth rate 0 % change on previous year (2024)
- Cropland — Area, per capita 0 1000 ha per person (2024)
- Cropland — Area, per unit of GDP 0 1000 ha per US$ of GDP (2022)
- Methane (CH4) emissions from Building (Energy) (Mt CO2e), per capita 0 Mt CO2e per person (2024)
- Cropland — Area, annual growth rate 0 % change on previous year (2024)
- Agricultural land — Area, per capita 0.0001 1000 ha per person (2024)
- Agricultural land — Area, per unit of GDP 0 1000 ha per US$ of GDP (2022)
- Methane (CH4) emissions (total) excluding LULUCF (Mt CO2e), annual 0.8333 % change on previous year (2024)
- Land area — Area, annual growth rate 0 % change on previous year (2024)
Frequently asked questions
- What is historical exposure to drought — land soil moisture anomaly in Guam?
- Historical exposure to drought — land soil moisture anomaly in Guam was 0.5909 Percentage change in 2025, according to Organisation for Economic Co-operation and Development.
- What is the highest historical exposure to drought — land soil moisture anomaly recorded in Guam?
- The highest recorded value was 20.62 Percentage change in 1963.
- What is the lowest historical exposure to drought — land soil moisture anomaly recorded in Guam?
- The lowest recorded value was -16.82 Percentage change in 1993.
- How does Guam rank for historical exposure to drought — land soil moisture anomaly?
- Guam ranks 45th out of 191 countries with data for 2025.
- Is historical exposure to drought — land soil moisture anomaly rising or falling in Guam?
- Over the last ten years it is down 85.8%. The long-run trend across the full record is volatile.
- Where does this Guam data come from?
- The figures come from Organisation for Economic Co-operation and Development, published as part of Historical exposure to drought — Land soil moisture anomaly. Statizoid updates them automatically from the source API.
Download this data
CSV · JSON — 76 observations, free to reuse under OECD Terms and Conditions (attribution required).
About this data
The dataset provides annual anomalies in land and cropland soil moisture content of the top soil layer (0 to 7 cm) compared to the reference period 1981-2010. Exposure indicators to drought have been prepared by the Organisation for Economic Co-operation and Development (OECD). Please see the working paper for a more complete description of the methods. The datasets span the period 1981-2024 and is the result of the use of a variety of geospatial data sources, including the ERA5-Land averaged monthly data of volumetric soil moisture and ESA CCI land cover data. Average anomalies have been calculated for both land and cropland exposure to drought. The dataset has a global coverage on a national level; on the sub-national TL2 level (i.e. large subnational regions) results are reported for all OECD countries as well as for Argentina, Brazil, China, India, Indonesia and South Africa. A number of aggregates are included: Euro area, European Union, Advanced economies, Emerging market economies, G7, G20, OECD, OECD Europe, OECD Asia Oceania, OECD Americas and the LAC region. Data source(s): Copernicus Climate Change Initiative land cover data and Copernicus Climate Data Store monthly soil moisture data based on the ERA5-Land reanalysis dataset. Contact: ENV.Stat@oecd.org