Adelaide
1.4 Lakes and wetlands

Lakes and wetlands connected to the surface water occur in the Adelaide region, however they could not be quantified in a way that is complete, neutral and free from material error. Therefore, their volume was not recognised in the water accounting statements.

A spatial analysis was used to identify the surface area of lakes and wetlands within 20 m of a watercourse.  The analysis used the spatial data layers 'landscape wetlands' compiled by South Australian Department of Environment and Natural Resources and 'stream orders' compiled by the by the South Australian Department for Water. The following table includes the surface area of wetlands connected to surface water within the Adelaide Region (3,336 ha). The surface area for storages (157 ha) was excluded as volumes associated with these are reported at line item 1.1 Storages.

The volume of water held in these lakes and wetlands is considered to be relatively small in size. While lakes and wetlands do provide significant environmental and recreational benefit and are relevant to the region, the omission of their volume is not expected to have a material impact on the volume reported for the surface water store or the surface water balance.