Estuaries

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.

Estuarine

indicators and confidence

Grading

gradesa1

very good

gradesb1

good

gradesc1

moderate

gradesd1

poor

gradese1

very poor

gradesnd1

insufficient data

Confidence surrounding the data used in the coasters has been assessed using a multi-criteria framework.

confidence

Environmental results

click on the grades for more information about each zone

 

Further information on the methods used to produce the scores and grades and detailed results can be found here.