| Abstract Title: | Influence of Burdekin Falls Dam on Mercury Aquatic Toxicity Risk in the Burdekin River System, Queensland Australia. |
| Presenter Name: | Fiona Henderson |
| Company/Institution: | University of Queensland |
| Session: | Special Session - Mercury in the Southern Hemisphere |
| Day and Session: | Wednesday 27th July - Session One |
| Start Time: | 06:30 UTC |
| Co-Authors: | Fiona Henderson |
Abstract Information :
The Upper Burdekin River feeds into Lake Dalrymple (volume: 1,860,000 ML), impounded by the Burdekin Falls Dam (BFD) (height: 55m, length: 876 m) supplying irrigation to sugarcane cultivation in the Burdekin estuary and cattle in the upper catchment. Overspill occurs almost annually during the wet-season at the BFD (96868.7 ML/day, Jan 2022). The barrier of the dam wall can cause ?sieving? during major flooding events, coarser sediment material (>10 æm) is retained by the dam wall, while finer suspended fractions (clay and silt,
