Yarra Focus catchment detail

This focus catchment is addressing hypoxia (low oxygen) events in the Yarra River: their extent and duration; their
relation to river flow, climatic conditions, urban runoff and wastewater; their effect on fish habitat; and thresholds and
triggers for management action.

The Arthur Rylah Institute (part of the Victorian Department of Sustainability and Environment), one of the partners working on the Yarra River Focus Catchment, installed 24 acoustic listening stations in August 2009 over a three-kilometre reach of the Yarra River near Heidelberg.

Since then, boat electrofishing has been conducted in the reach, and 22 Macquarie perch and 17 short finned eels collected and tagged with acoustic transmitters. Continuous data on activity levels and depth have been collected and show clear diel patterns. Data will continue to be collected throughout the life of the transmitters.