Kolan River Bank Stabilisation

(not documented)

Conservation

On-ground work

(none)

Australian Government

$778,143

(not documented)

1 July 2021

Ongoing

A large erosion site located in the tidal area of the Kolan River in the Discovery Coast has been identified as a contributor of fine sediments entering the Great Barrier Reef World Heritage Area (GRB WHA) and is experiencing ongoing erosion. The site is 650 m length of shoreline that has a 3-4 m high vertical bank and is subject to scouring and erosion from overland flows. Historical imagery analysis of this area has revealed a meander migration of approximately 100 m since 1956, which equates to a rough estimate of 52,500 m^3 of sediment that has entered the Great Barrier Reef in this time. By undertaking engineered shoreline rehabilitation works in the area, the bank will be stabilised avoiding further shoreline erosion at the site and downstream. This enables natural revegetation to occur, further binding sediment and preventing it from entering the marine environment. Monitoring and evaluation will be undertaken using drone-based and conventional ground-based techniques. This activity will directly reduce threats to subtropical and temperate coastal saltmarsh threatened ecological communities and support water quality outcomes for the GBR WHA.

Reduce erosion and sediments entering the Great Barrier Reef, re-establish riparian zone providing fish habitat, and bed and bank stabilisation.

(not documented)

(none)