The volumetric value for the line item at the end of 2009–10 is 7,346,102 ML.
This line item represents the volume of water held in storages that are used to supply water for entitlements in regulated systems. The volume reported for this line item includes the volume of dead storage.
The following link provides a table which details the storage volumes in the Murray–Darling Basin (MDB) for 2009–10.
Specific details of individual storages for each Murray–Darling Basin planning region are provided in the above table. Volumetric data for a number of small reservoirs were not received at the time of compilation of this note, and are therefore not included in the table.
Murray–Darling Basin planning regions and their unique identification numbers have been defined in the note ‘Water rights, entitlements, allocations and trade’.
A number of mid-river storages, locks, weirs and the like also support the delivery of water. These storages form part of the river channel and usually only provide very short-term supply. The volume for a number of these storages is reported in Line item 1.3 Regulated channel. Water may also be used from lakes and wetlands within the MDB, as reported in Line item 1.4 Lakes and wetlands – connected.
This line item comprises two different data-sets. The method for each data-set is shown below.
Water storages, Australian Water Resources Information System (AWRIS).
Bureau of Meteorology.
Storage volume is measured at the start and end of the reporting period by using gauged water level height(s) in metres Australian Height Datum (mAHD) for individual storages. The height measurement is converted to a volume using the storage-volume curve(s) of the storage.
HYDRO database (also known as BSIS).
Murray–Darling Basin Authority (MDBA).
Values have been provided to the MDBA as part of the water audit monitoring report data.