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Daintree River

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Through River, Australia and UNESCO

Course and features

The river rises on the slopes of the Great Dividing Range within the Daintree National Park below Kalkajaka at an elevation of 1,270 metres (4,170 ft) AHD. The river flows in highly meandering course generally north, then east, then south and then east, through the rainforest where the water is fresh. At this convergence point, an abundance of wildlife congregate, particularly fish. The river is joined by two minor tributaries before flowing through the Cairns Marine Park through thick mangrove swamps where the water is highly saline; and then empties into the Coral Sea, north of Wonga Beach. The mouth of the Daintree River opens onto a giant sandbar that shifts with each changing tide. The river descends 1,270 metres (4,170 ft) over its 127-kilometre (79 mi) course.

The catchment area of the river occupies an 2,107 square kilometres (814 sq mi) of which an area of 33 square kilometres (13 sq mi) is composed of estuarine wetlands.

Flooding

The river is surrounded by mountains and deep valleys. Combined with the climatic conditions of the area the river is prone to quickly developing floods with little warning due to the high rainfalls on the 1,000-metre-high (3,300 ft) mountain ranges around the catchment and the influence of the cyclonic forces in the adjacent Coral Sea. In March 1996, record flood levels swamped roads and properties throughout the Daintree region. Statistics gathered at the time recorded 606 millimetres (23.9 in) of rain falling in 24 hours.

In 2011, two new causeways were completed over Cape Tribulation Road, making the drive mostly floodproof in all but the most severe rain events. In particular, the notorious bottleneck at Cooper Creek was raised 3 metres (9.8 ft).

In 2019, the river peaked at 12.6 metres at Daintree breaking the 1901 record of 12.4 metres.

In 2023, a new record of 15 metres was recorded at Daintree after torrential rains from ex-Cyclone Jasper flooded the catchment.

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