Estuaries Across the Region
The environmental health of the Wet Tropics estuaries is assessed on water quality, habitat and hydrology, and fish. For 2016-17 scores and grades are provided where data is available, with further development required for the fish index.
The eight estuaries included in the Wet Tropics Report Card region are Daintree, Dickson Inlet, Barron, Trinity Inlet, Russell-Mulgrave, Johnstone, Moresby and Hinchinbrook Channel.
Overall grades were assessed from the habitat and hydrology index and the water quality index for all estuaries except Dickson Inlet for which water quality data was unavailable.
For 2016-17 most estuaries were graded good. The exceptions were the Barron, which was graded 'moderate' with the lowest overall score (55) and Hinchinbrook Channel, which was graded 'very good' with the highest score (81).
The below average to average rainfall for the year resulted in reduced river flows into the eight estuaries. There has now been three consecutive reporting years (2014-15, 2015-16 and 2016-17) with dry conditions and low river flows across most of the region.
indicators and confidence
click on the grades for more information about each zone