alt=The drainage division thinly stretches from the New South Wales-Queensland border down the East coast to eastern South Australia|thumb|Approximate location of the drainage division
The south-east coast drainage division is the very long, narrow area of southern Australia between the Great Dividing Range and the Coral and Tasman seas, and the Bass Strait. It includes the small part of south-eastern South Australia which lies to the east of the Murray–Darling basin, and all of coastal Victoria and coastal New South Wales. While the southern, eastern, and western boundaries are clearly defined by geography, the northern boundary is arbitrarily defined as the New South Wales – Queensland border.
Catchment areas
For administrative purposes, within the drainage division, the basins are generally classified into the following catchments, from north to south, then east to west:
- Northern Rivers catchment
- Hunter-Central Rivers catchment
- Sydney Basin
- Southern Rivers catchment
- East Gippsland catchment
- West Gippsland catchment
- Westernport and Port Phillip catchments
- Corangamite catchment
- Glenelg-Hopkins catchment