Inflow to reservoirs during July was approximately 13% of average, with reservoirs increasing by around 6,000 ML since the July water resource assessment. This has been sufficient for a 2% allocation to be made to Wimmera-Mallee Pipeline Product entitlements this month. No allocation has been possible yet to Glenelg River Compensation Flow, Recreation, Wetlands or Commonwealth Environmental entitlements.
A revised system reserve rule came into effect this month, with 2,200 megalitres now in reserve. The revised rule shares the available water between entitlements and the system reserve as soon as allocations commence. Details of the new reserve rule are available from the Storage Management Rules page.
Sufficient water is held in storage to secure all headworks system operating water requirements for the 2022-23 season. However, further inflow is required before any allocation can be made to entitlements. Operating water represents the volume which is projected to be lost through the normal operation of the headworks system. Evaporation from reservoirs represents the majority of system operating water requirements.
While no allocation has been possible to any entitlement at the time of the July 2022 water resource assessment, bulk entitlement holders collectively have access to approximately 109,000 megalitres of unused water allocation carried forward from 2021-22 year.
The month of May saw below average rainfall recorded at all reservoirs. A further small improvement in the volume available for allocation resulted from lower than forecast evaporation from reservoirs, combined with a very small volume of inflow.
This resource improvement has enabled allocations to Wimmera-Mallee Pipeline Product entitlements to increase from 59% to 63%. Glenelg River Compensation Flow entitlement allocation increased from 3% to 7%. Recreation entitlement increased from 1% to 5% allocation, and Wetlands entitlement increased from 1% to have a 6% allocation. No allocation has been possible to Commonwealth Environmental Water Holder entitlements this season. The volume allocated to the System Reserve remains at 15,000 megalitres.