Heavy rain on already saturated soils caused up to $100,000 of damage to Dave and Karen Robertson's steep hill country farm near Lawrence in November.
Mr and Mrs Robertson have 1000ha of both flat and steep hill country, and run 6000 ewes and 150 cattle.
''We had five inches [127mm] of rain at once at the end of November and the ground was already saturated before it started,'' Robertson said.
''The ground was overloaded. It was unbelievable.''
Dozens of slips moving thousands of tonnes of soil and scrub caused damage to some of the farm's roads, as well as blocking creeks, filling ditches and gullies and damaging or flattening about 20 fences, including three boundary fences.