Sediment (particularly muddy sediments) discharged into rivers, streams and harbours can negatively impact a range of values, including ecosystem health and the way people use water for recreational, cultural and spiritual purposes.
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The depth of sediment overlying concrete pavers buried at discrete sites provides an indicator of estuary sedimentation. The map shows average sediment depth change (mm) from baseline (year pavers installed) at each monitoring site (displayed as circles) and over the whole harbour (shaded region). Positive values indicate where there has been sediment deposition (accumulation) and negative values indicate erosion.
See Stevens et al. 2022 for technical methods, data tables, and further information