Rainfall & harvesting
Evaporation loss calculator
Estimate how much water a reservoir or pond loses to evaporation over a season.
Result
Evaporation depth
600mm
Volume lost
600.0m³
In litres
600,000litres
Per day
1,645litres/day
Note
Evaporation is proportional to surface area, not to volume
A shallow reservoir with a large surface loses far more proportionally than a deep one.
Method
Loss volume = surface area × evaporation depth over the period. Evaporation depth is entered directly or selected from typical climate ranges.