Cape Town Drought Monitoring
Compare water extent and vegetation conditions across dates to put a changing landscape into context.
Explore this example
How has the visible surface area of a reservoir changed?
Data to start with
Landsat or Sentinel-2 imagery from comparable seasons, reservoir boundaries, rainfall records and available dam-level measurements.
A practical method
- Choose suitable dates and remove cloud and shadow.
- Map open water consistently, then compare its extent.
- Review the result against rainfall and measured reservoir levels.
Useful outputs
A series of dated maps, an area-change table and a short explanation of data quality and interpretation.
Mapped water area alone does not measure stored water volume or establish the cause of a drought.
See NASA's Cape Town satellite example ↗



