The cache is not at the published coordinates.
This is a bonus physical gadget-cache for those who finish the Adventure Lab :
Upon completion of the Adventure Lab, you'll receive the final coordinates for this cache. The final hide is themed in keeping with the journey of water and floods you've followed throughout the adventure.
Do be mindful of muggles as they are often walking and working near GZ. Like all good flood plans, take note of the local conditions (cache attributes), how much rain the catchment has had (see hint), and come prepared.
Did you know that NSW has a geocaching association? Geocaching NSW aims to enhance and improve the activity of geocaching and holds regular events where geocachers meet to enjoy their common interests. Visit the association website here.