Sections of the riverbanks at Scott's Point were eroding rapidly due to a combination of boat wake, historical riparian clearing and nearby channel dredging, combined with natural processes such as floods, wind waves, catchment runoff, soil type and tidal influence. Previous methods including stock exclusion, riparian revegetation, transplanting Juncus sp. (rushes), bank battering and jute matting were not effective against the high rate of erosion. Rock fillets were installed to dissipate water movement and allow mangrove re-establishment on the banks. Dense trees, shrubs and ground cover plants were then planted behind the rock fillets, with substantial volunteer assistance. The project led to natural regeneration of mangrove and saltmarsh species and successful restabilisation of the banks.

Mangroves

Method: Hybrid, Supplementary revegetation

Supplementary revegetation: Dense trees, shrubs and ground cover plants

Hybrid structure: Rock fillets

Hybrid structure width (m): 1-Feb

Hybrid structure length (m): Oct-30

Saltmarsh

Method: See above

Hybrid structure: Rock fillets

Hybrid structure width (m): 1-2 (individual rock fillets)

Hybrid structure length (m): Oct-30