Adelaide
19.1 Evaporation from urban water system

Supporting information

Evaporation from the urban water system in the 2011–12 year was 0 ML as surface water storages were not considered as part of the urban water system in the Adelaide region (see line item 3.1 Urban water supply system).

Comparative year

This line item corresponds to line item 19.1 'Evaporation from urban water' reported in the 2011 Account.

In the 2011 Account, storages that were used for urban water supply only (located off-stream and which harvested only minimal catchment runoff) were reported at line item 3.1 'Urban water system'. The storages were Barossa Reservoir, Happy Valley Reservoir, Hope Valley Reservoir and Onkaparinga Summit Reservoir.

In the 2012 Account, these storages were reported at line item 1.1 Storages in order to be consistent with the classification of storages applied to the other regions of the National Water Account. Evaporation from these storages was therefore reported under line item 17.1 Evaporation from surface water in the 2012 Account. As a consequence, the 2010–11 volume was restated as per the following table.

Restatement of comparative year information for line item 19.1 Evaporation from urban water system
Storage name

2012 Account volume for the 2010–11 year (ML)

2011 Account volume for the 2010–11 year (ML)

Additional information

Barossa Reservoir

n/a

699

Reclassification

Happy Valley Reservoir

n/a

1,893

Reclassification

Hope Valley Reservoir

n/a

581

Reclassification

Onkaparinga Summit Reservoir

n/a

116

Reclassification

Total

0

3,289