The municipality is located predominantly in the Dandenong catchment, in which Dandenong Creek is the major creek and tributaries include Bungalook Creek, Blind Creek, Eumemmerring Creek, Corhanwarrabul Creek and Mile Creek.

Significant major flooding occurred on the Dandenong Creek in 1984 and 2005 with many minor flood events occurring.

Dandenong Creek is the largest waterway and the main floodway through the Greater Dandenong Council region. It traverses approximately north-east to south-west from the Dandenong Ranges National Park and discharges into Mordialloc Creek and the manmade section of the Patterson River.

The urban characteristic of the area also means that rain water is not easily absorbed and tends to run off towards lower lying areas. During high intensity rainfall the amount of run off can lead to stormwater drains overflowing, causing flash flooding. Flash flooding occurs with little warning, only lasts a short time and can cause severe localised damage.

Click the button below to view the Local Flood Guide, which includes information about the local flood risk and how you can prepare for and respond effectively to floods.