An interstate feud has erupted between New South Wales and Queensland beachgoers after Tweed Coast residents accused their neighbours over the border of taking too much sand while their own beaches suffer erosion.

Key points: Residents of Fingal Head believe the nearby Tweed River entrance Sand Bypassing Project is exacerbating erosion woes

Residents of Fingal Head believe the nearby Tweed River entrance Sand Bypassing Project is exacerbating erosion woes Representatives from the Gold Coast surfing community and local fishermen say they support the sand pumping

Representatives from the Gold Coast surfing community and local fishermen say they support the sand pumping Project officials deny pumping is causing erosion

Fingal Head locals say the Tweed River entrance Sand Bypassing Project — which moves sand from the Tweed to Gold Coast beaches — is exacerbating erosion issues along their coastline, but project officials deny responsibility.

The issue reached boiling point at a recent community meeting, where dozens of passionate Fingal residents made their voices heard.

Representatives from both the surfing and fishing communities said they approved of the sand pumping.

Snapper Rocks Surfriders Club chairman Bruce Lee told attendees the sand bank at the world famous break was currently "in very good shape" as a result of the sand pumping.

The Fingal sand bypass jetty was built in 2000 to keep the Tweed River bar open and safe for navigation.

However, it also inadvertently created the 'superbank' — a popular surf break offering rides of up to 500 metres from Snapper Rocks through to Kirra.

Since its inception, the jetty has pumped an average of 500,000 cubic metres of sand annually although amounts fluctuate based on swell events and sand movements.

Retired engineer Robert Budd, whose family has visited Fingal Beach for generations, said the coastline had changed shape dramatically since the sand bypass system was introduced.

Locals Velia Hendry and Robert Budd are concerned about the extreme erosion happening on Fingal Beach. ( ABC Gold Coast: Michael Saunders )

He said it would only be a matter of time before the erosion became so severe that the ocean would break through to the Tweed River.

"Currently there are only about 200 metres between the ocean and the Tweed River in some parts," Mr Budd said.

"If a cyclone were to come through, I suspect there are parts of this beach that could be vulnerable and we are worried about how far this is going to go."

Water breaking through from the beach could have a devastating effect on the area, with homes, a campground, and a cemetery at risk of damage.

Concerned locals feels 'forgotten'

Mr Budd said he did not want to see a complete stop to the sand pumping but he believes more research is needed on the volatile beach to ensure it is sustainable.

"I think we are forgotten about," he said.

"We have spoken out to members of the council and the State Government and so far there hasn't been any interaction.

"I think they need to step up and there should be someone looking out for this region, not just concerned locals."

Tweed Sand Bypassing Project manager Brendan Logan denied the project was taking sand from the northern end of Fingal and said extra sand was being placed on the beach to alleviate the erosion.

The 'superbank' on the southern Gold Coast is the source of the famous waves at Snapper Rocks. ( Supplied )

"The Tweed Sand Bypassing Project is not taking sand off Letitia Spit," Mr Logan told ABC Gold Coast.

"In fact, earlier this month 30,000 cubic metres of sand dredged from the Tweed River entrance was placed offshore of Fingal Beach to help address erosion concerns.

"Recent natural weather and wave events have contributed to erosion at beaches in northern NSW and southern Queensland, including at Fingal."

Mr Logan said 416,000 cubic metres of sand had been captured and redeposited in Queensland over the past 12 months, which he said aligned with annual averages.

"While there has been some receding of sand and realignment of Letitia Beach due to the pumping jetty, it was always expected this would occur as the natural sand flow to southern Queensland was reinstated to counter the effects of the Tweed River training walls," he said.

Fingal resident Vilia Hendry said locals were becoming frustrated with the constant erosion on the beach.

"My worries are that it will just keep going and we will lose more and more vegetation," Ms Hendry said.

"The sand pumping jetty has a contract to pump a certain amount of sand annually and they stick to that, regardless of whether the Gold Coast has enough of our sand up on their beaches, which it seems to have most of the time.

"Fingal is such a special part of the world [and] we have fought hard over the years to keep it special.

"To lose all this through the ocean swallowing it up would be devastating."