Pond Boss Forums POND CONSTRUCTION Soil questions Pond holding water...success notes

FWIW I think you're right. Evaporation will be maximized when it is hot, dry, or windy - get two or three of those and you will lose the most water.

Even a frozen pond will lose some water (ice) to dry air via sublimation (think of that old ice cube tray in the back of the freezer slowly becoming empty), but it will be at a very low rate compared to open water evaporation.