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IN PHOTOS: See how the Bribie breakthrough has impacted its surrounds in 12 months

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When a trickle of water started snaking through the sand dunes of Bribie Island a little more than a year ago, it represented the start of a wild series of events.

The stream that infiltrated the isle in late December 2021 quickly evolved into a torrent of waves crashing right through the island in early January 2022.

Scroll down for photos

Bribie Island essentially became two within a couple of months, including Bribie Island proper and the new small northern isle.

The ocean surged through the split and into the Pumicestone Passage and, over time, changed the tidal movement in and around the area.

The breakthrough continued to expand and mountains of shifting sand created expansive spits across the passage and from Happy Valley to the north island, which people could essentially walk along, but the sand posed problems for the Caloundra Coast Guard and other boaties at low tide. Their requests for dredging were rejected.

Meanwhile, old World War II monuments were swallowed by the sea and kangaroos were seemingly marooned on the northern island. Waterway businesses were forced to adapt and decades-old oyster banks were uncovered.

An early investigation showed the breakthrough had changed tide heights but the impacts on the passage and its surrounds – particularly regarding erosion, flora and fauna – are yet to be fully understood, amid ongoing monitoring and research. Meanwhile, the future for water users is also unclear.

Then, there was another twist at the end last week, when a split occurred in the large sand spit in the passage. It’s unknown what affect it will have on but water appeared to be moving more freely through the passage, which could open up the waterway again, including at the Caloundra bar; it could also close up again or it could shift sand into other areas of the passage.

Maritime Safety Queensland general manager Kell Dillon provided an update on the conditions to SCN last week.

“This area remains unstable and highly dynamic and MSQ is monitoring, using best efforts to ensure safe navigation and access to and from the sea to the main Pumicestone Passage, where channel depths allow, in the face of powerful dynamic forces,” he said

“MSQ and other state and local government agencies continues to monitor ongoing changes to channels near Bribie Island and Pumicestone Passage after storms last January, which caused an ocean breakthrough near the northern end of Bribie Island.”

He said the tides and the sand were still changing.

“The Pumicestone passage channel has reformed through the breakthrough as the main channel to the sea,” he said.

“A new and large sandbar at the northern end of the breakthrough continues to move west within Pumicestone Passage.

“At the same time the Caloundra Bar entrance is gradually closing due to accumulating sand movement north on the eastern side of Bribie Island and lesser water flows in the original channel.”

Mr Dillon said experts were still analysing conditions and he again ruled out dredging.

“MSQ coastal engineers currently consider potential interventions, such as dredging, would be ineffective in the short to medium term, and potentially have an environmental impact on sea-grass beds, nesting shorebirds and other wildlife in the adjoining marine park,” he said.

He said the agency had implemented initiatives to help boaties stay waterway safe.

“MSQ continues to prioritise safe boating, declaring a new coastal bar, issuing regular notices to mariners about the danger, and updating the Beacon to Beacon Guide for Pumicestone Passage,” he said.

“Boaties should take care in this area and check the MSQ Notice to Mariners page for the latest information on waterway depths and shoaling.”

Doug Bazley, of Bluey’s Photography, has provided several stunning photos documenting the area’s change over time, along with Brendan Smith of SkyShots Photography, Zane Jones and Damien Lange. See their great photos below.


An intact Bribie Island on the left, in 2017. Picture: Bluey’s Photography
The Caloundra bar, with plenty of water, in 2017. Picture: Bluey’s Photography

December 2021

Water starts to seep through the island. Picture: Bluey’s Photography
The trickle becomes more of a flow, to essentially start the breakthrough. Picture: Bluey’s Photography

January 2022

The breakthrough gathers momentum. Picture: Zane Jones
It is well and truly established. Picture: Bluey’s Photography
The spit at Happy Valley expands, on right, at the Caloundra bar. Picture: Bluey’s Photography
The passage starts to clog with sand. Picture: Bluey’s Photography


The sand at Golden Beach. Picture: Bluey’s Photography


The Caloundra bar. The sand at Happy Valley to the left almost touches North Bribie Island. Picture: Bluey’s Photography
Happy Valley and the Caloundra bar to the left, and the Pumicestone Passage to the right. North Bribie Island can be seen in the middle of the picture, with the breakthrough separating it from the Bribie Island proper. Picture: Bluey’s Photography


The area makes for some stunning scenery during clear winter days. Picture: Brendan Smith, SkyShots Photography


A World War II beacon is swallowed by the ocean. Picture: Bluey’s Photography
Oyster beds are in full view in Pumicestone Passage. Picture: Bluey’s Photography
Kangaroos on the north island. Picture: Damien Lange


The breakthrough in full flow. Picture: Bluey’s Photography

January 2023

The spit at Happy Valley has become a popular destination. Picture: Bluey’s Photography
The vast amount of exposed sand at Happy Valley and the Caloundra bar. The breakthrough can be seen at top left. Picture: Bluey’s Photography
Sand cuts across the Pumicestone Passage. The breakthrough can be seen on the left. Picture: Bluey’s Photography
A new development: a breakthrough happened through the passage sand spit, to the right, late last week. Boats can be seen heading out the main, wide breakthrough. Picture: Bluey’s Photography
Looking north along the spit, where a small gap has emerged in recent days. Picture: Bluey’s Photography

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