Cardinia Reservoir is a large water storage facility located in Victoria, Australia. It is part of the Melbourne Water supply system and plays a crucial role in providing drinking water to the surrounding areas. The reservoir has a capacity of approximately 225 gigaliters and is surrounded by scenic parklands, making it a popular spot for outdoor activities. The reservoir is fed by the Cardinia Creek and is designed to help manage water supply during dry periods. It also supports local wildlife and offers recreational opportunities such as walking and cycling along its trails. The area is an important ecological habitat, contributing to the region's biodiversity.