Historically, functionality for modelling Farm Dams in Source was available through the FarmDams plugin. This Functionality was moved to core Source in Source version 5.30. While the implementation between the plugin and the core version might differ slightly, the principles and logic are the same and have been applied exactly as found in the plugin - for each dam, Source conducts a water balance, considering inflows, bypass, rainfall, evaporation, seepage, water usage (demand), and overflow (spill) components in each time step.
...