Bali Garden Water Budget

Rainfall, irrigation, evaporation, transpiration, runoff and storage, across two contrasting seasons.

The seasonal contrast is what makes this worth doing here rather than anywhere else. A tropical garden has surplus for months and deficit for months, and the management problem is entirely about moving water between them.

The page has the budget model, regional rainfall data, estimation methods for the losses, and a storage sizing calculation. That last calculation, how big a tank would need to be, is the one students find most concrete and it produces numbers that are surprisingly large.