The final dividend decision will also be announced on September 13 and Rivers predicts it will likely be "just the 10 cents that was already paid."
"That's not what we had hoped would be the case ... but it's necessary here in the interest of protecting the financial discipline ... for the co-operative which is in all of our stakeholders' interests."
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Duncum asks if Fonterra's recent woes are a result of the failed investment with Chinese company Beingmate.
Rivers says although Beingmate is not the reason for Fonterra's issues at the moment, it has caused problems for the co-op over the year, along with other factors.
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"Certainly overall for the full year, we've had the challenges of the Danone as well as the Beingmate impairment on top of the underlying business challenge of margin pressure that comes from operating in a very high milk price environment. I think all of those are relative factors here."
It is important for Fonterra to move forward from these setbacks says Rivers and he expects the impact will be "limited to this year."
Duncum asks how Fonterra is going to ensure it operates with more accuracy in the future.
"We are very mindful that we have to do better, both in terms of forecasting and understanding what is certainly a complex business and it's also about doing better on execution and performance, even in a high milk price environment."