Dugald River Climate Change preparedness – sediment dam upgrade

Written by MMG Limited     May 5 2023 at 2:34 PM

MMG contribute to initiatives promoting better water use, effective catchment management and improved security and sanitation for surrounding communities.


A predicted increase in extreme and intense rainfall events and weather patterns has mobilised the Dugald River environment team to upgrade a sediment dam as a mitigation strategy. The Sediment Dam F upgrade supports a higher throughput of stormwater runoff and improved release of water quality. The team also redirected additional runoff from non-acid forming waste rock to the dam, which houses an automated dosing station. The dam upgrade work increased capacity by about 200% to 7.7ML. Water quality was also improved with the inclusion of a flocculant dosing system (water treatment for mineral extraction) coupled with other adjustments to adapt to rainfall intensity and maintain water release quality.