Donnelly Weir ( formerly Donnelly 's Weir ) is located in the Yarra Ranges . It diverts water from Donnelly Creek , a tributary of the Watts River just downstream of the Maroondah Dam , into the Maroondah Aqueduct . It is a part of the system that supplies water to the city of Melbourne , Australia . It is managed by Melbourne Water . It is often visited by students studying Melbourne 's water supply because of its easy access and information signs . It was heavily impacted by the Black Saturday bushfires and was closed for many months afterwards . The immediate areas were burnt out and all of the facilities had to be replaced
Black Saturday bushfires
Black Saturday bushfires
Donnelly Weir