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.
indicators and confidence
click on the grades for more information about each zone