Freshwater

Freshwater Basins Across the Region

The environmental health of the Wet Tropics freshwater basins is assessed on water quality, habitat and hydrology, and fish. For 2019-20 the fish index is available for all basins except the Daintree.

Overall grades are provided for all nine basins in the Wet Tropics region - the Daintree, Mossman, Barron, Mulgrave, Russell, Johnstone, Tully, Murray and Herbert. Most are graded B (good) except for the Daintree which was graded A (very good) and the Barron which was graded C (moderate).

Annual rainfall was below average with November having the lowest rainfall on record in every basin. May was exceptionally wet with substantially higher than average rainfall.

 

Freshwater

indicators and confidence

freshwaterlegend

Grading

gradesa1

very good

gradesb1

good

gradesc1

moderate

gradesd1

poor

gradese1

very poor

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

 

See the detailed reports for further information on the methods used to produce the scores and grades and detailed results.