The Southern ACT Catchment Group commissioned environmental scientist Ian Lawrence from the Cooperative Research Centre for eWater to investigate the health of the lake.
He found poor design, soil run-off, organic matter and litter are fuelling algal blooms.
Weekly NewsletterEvery Thursday afternoon, we package up the most-read and trending RiotACT stories of the past seven days and deliver straight to your inbox..
The report found building wetlands, planting more native species and improving the quality of the water flowing into the lake would help address the problem.
- Food & Wine