Enter the original water level (gallons) and the final water level (gallons) into the Calculator. The calculator will evaluate the Evaporation Loss.

## Evaporation Loss Formula

EL = OWV - FWV

Variables:

- EL is the Evaporation Loss (gallons)
- OWV is the original water level (gallons)
- FWV is the final water level (gallons)

To calculate Evaporation Loss, subtract the final water level after evaporation from the original water level.

## How to Calculate Evaporation Loss?

The following steps outline how to calculate the Evaporation Loss.

- First, determine the original water level (gallons).
- Next, determine the final water level (gallons).
- Next, gather the formula from above = EL = OWV – FWV.
- Finally, calculate the Evaporation Loss.
- After inserting the variables and calculating the result, check your answer with the calculator above.

**Example Problem : **

Use the following variables as an example problem to test your knowledge.

original water level (gallons) = 4300

final water level (gallons) = 3000