Work out fish pond volume instantly with clear inputs, formula shown and shareable results.
For a pond with a sloping bed, volume is surface area times the mean of the shallow and deep depths. Surface area matters separately because oxygen transfer from the atmosphere, natural food production and evaporation all scale with area rather than volume.
Pond volume
Average depth = (shallow + deep) / 2; volume = length x width x average depth
Stocking, liming and chemical treatments are dosed on the actual water volume. Using maximum depth over-estimates volume and leads to over-dosing.
1.0-1.5 m for carp polyculture, up to 2 m where thermal buffering is needed. Deeper than about 2.5 m the bottom layer stratifies and goes anoxic.