Comment by chris_va
It's a surprisingly convenient unit of measurement. Rainfall and irrigation typically are 0-1m per year, so if you have a 10acre farm you need 10acre-m of water to grow... Though, can't mix units, that would be silly :).
It's a surprisingly convenient unit of measurement. Rainfall and irrigation typically are 0-1m per year, so if you have a 10acre farm you need 10acre-m of water to grow... Though, can't mix units, that would be silly :).