Reservoir Area Observatory

Global Reservoir Area Dynamics

Latest reservoir area -- km2
Net change -- from January 2017
Current anomaly -- relative to same-month mean
Monthly variability -- standard deviation of monthly change

Select a Country

Select a country or WMOBB basin to update the time series.

Reservoir Area Time Series

Monthly reservoir area and same-month anomaly

Annual Cycle by Year

Monthly reservoir area trajectories for each year

Analysis Units

Select a row to update the country or basin time series.

Name Reservoirs Latest area (km2) Net change Current anomaly Monthly variability