722 mm of rain falls in a normal year, in two bursts around April and November.
61% soaks in. The rest, about 180,000 m³, leaves the farm.
Runoff gathers in two places before it goes. The southern valley floor takes 107 ha; the central basin takes 31 ha.47,000 and 18,000 m³ in a normal wet season
It leaves at a single point on the southern boundary.
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