Rainfall is calculated by measuring the depth of water that falls on a level surface over a specific period. This measurement indicates the amount of rain.
Measuring Rainfall
- Unit of Measurement: Rainfall is usually measured in mm (millimeters).
- Ideal Conditions: This measurement assumes a completely flat surface with a protective wall to prevent water loss. This ensures an accurate reading of the water level.
Example of Rainfall Measurement
If the rainfall on a particular day is recorded as 15 mm, it signifies that if all the rain were collected on a flat, protected surface, the water would be 15 mm (or 1.5 cm) deep.
