CANBERRA, ACT, Aug. 13 -- Murray-Darling Basin Authority issued the following news release:

The Murray-Darling Basin attracts visitors from around the world. This tourism earns around $20 billion each year. The success of this tourism is thanks to the unique and diverse environments in the Basin.

Many people visit the Basin to immerse themselves in its rich history, cultural heritage and natural beauty. Others visit for recreation, including bushwalking, camping, swimming, fishing and birdwatching. However, the connection between the health of our waterways and visitor numbers remains unclear.

Our wetlands are healthy when the water quality is good and plants and animals are thriving. A recent Murray-Darling Water and Environment Researc...