Revegetation of over 30 hectares of bush land destroyed during the spillway construction was required. Arterra initially undertook a Flora Survey of the existing bush and conducted a comprehensive Weed Survey of the construction site. Our unique concept for the spoil emplacement mound helped Abigroup win the tender and resulted in significant benefits in revegetation success rates and zero site runoff. Arterra played a key role in the writing and implementation of the projects Environmental Management Plan, including the Site Rehabilitation and Landscaping Strategy and the Weed Management Strategy. Further works performed included detailed rehabilitation monitoring and reporting over a two year period. The revegetation outcome has been an overwhelming success.

Warragamba Auxiliary Spillway Rehabilitation



Year Completed

Approx Budget


Sydney Catchment Authority / Abigroup Contractors



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