A Corindi blueberry farmer believes the overall damage and lost production bill on his property could reach $500,000, following a hail storm on the New South Wales north coast.

OzGroup Blueberry Packing Co-operative chairman, Gurmesh Singh, estimated about 80 per cent of his blueberry crop had been damaged.

"It's probably in the order of $300,000 to $400,000, plus the repair costs on top of that, so we're looking at another $100,000 repair costs," Mr Singh said.

"We've also got macadamias which were in full flower, most of the flowers are on the ground now and a lot of leaf as well next year's macadamia crop isn't looking too good either."

Mr Singh said other crops in the region had also suffered damage.

"I know raspberry production has taken a hit up here as well, they've had infrastructure damage with their hot house tunnels,' he said.

"There would also be cucumber and tomato glass houses that have been damaged as well."

Ripe blueberries damaged by hail storm. ( Cassie Hough )

The Department of Primary Industries is currently assessing damage following yesterday's storm and is requesting details of any storm damage and losses to other agriculture industries in that area, such as protected cropping, bananas, macadamias, avocado, and sugar cane.

DPI's Blueberry Industry development officer, Phillip Wilk, has started assessing the damage on the Corindi plateau, north of Coffs Harbour and south of Grafton, meeting with growers and major grower groups to assess the extent and level of damage.

"This storm has damaged about 10 to 15 per cent of the New South Wales blueberry crop, a lot of the fruit was ready to harvest," he said.

Overall Mr Wilks estimated the damage to crops and infrastructure could be in the order of tens of millions of dollars, based on the crop reduction, as well as the infrastructure damage.

The DPI resilience program will be asked to assist with any cases of personal distress and welfare so that people can be directed to specialist services should this be necessary.

DPI is working with North Coast Local Land Services collating reports of damage and an Agriculture Natural Disaster Report will be submitted when all necessary details are determined.