Based on past floods, Forlong thought the rescue job would be quick but it was far more extreme and adrenaline filled than expected.
"The sheep would get pinned against the trellis or canopy and couldn't swim across so basically I had to carry them through. One at a time, well two by two. I nearly lost my dogs with the same thing.
"Basically forced under [the canopy] and then tangled in wires. I got there and was unprepared for what it was ... I ditched gumboots they were dragging me down, and just went through in a raincoat and stubbies.
Meanwhile, damage on the vineyard had been substantial and would be very costly, he said.
Vines had been pruned but the canes had not been mulched, so as fast flowing river picked them up it was a domino effect with the mulch "building dams" against the trellis, breaking post after post.
The Forlong family vineyard prior to the flood. Photo / Matt Forlong
"Well over 700 posts are broken ... with silt and debris is wrapped around vines, irrigation and wires. It will be a very very big clean up. Marlborough was short of labour before, it will be in dire need now," according to Forlong.
They were tight on labour for winter pruning so now the few workers there were would have to work even harder, he said.
He estimated overall 3000-4000 hectares of the Wairau Valley would be damaged, with one friend's property at Taumarina near the coast 2m underwater.