Read more: Farmers told 'get it together' on sediment issue
Critics said the timing of the press release was "opportunistic," as photos were taken when Southland had experienced record-breaking rainfall that week.
Fish & Game New Zealand's chief executive Martin Taylor dismissed these claims when he spoke to The Muster's Andy Thompson.
"It's not opportunistic at all. The fact is the paddocks were bare because of the winter grazing practices and I don't think it's abnormal that Southland gets ... lots of rain."
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"I think that anyone who thinks this is just an accident of a weather event is very wrong."
Thompson said Fish & Game was "picking on dairy constantly" for not looking into whether sheep and beef properties were involved.
"Well this is dairy support mostly and what we're trying to show is, the practices that took place over winter have environmental effects long after the cows have gone back into the farm."
"You can throw your hands up in the air and say 'oh it's all the weather and we can't control the weather,' but the fact remains [that] the stocking rates on those winter-grazed paddocks is controlled by ... the farmer who planted that winter crop on those slopes and then didn't have the right riparian buffer zone."
"The problem here is not with the weather but the practice."