Hunter Valley Water Balance Report - 2012-13
Water balance component |
Sources of water | Distribution of water | % of volume measured | ||
|---|---|---|---|---|---|
Volume (ML) |
% of total |
Volume (ML) |
% of total |
|
|
Storage Volume |
|||||
| Volume in storage at start of year | 1,028,260 | ||||
| Volume in storage at end of year | 1,017,711 | ||||
| Change in storage | 10,549 | 1% | - | 0% | 100% |
| Barnard Reserve (4) | - | 0% | - | 0% | 100% |
| Spills | 52,273 | 100% | |||
| Storage net evaporation | 49,989 | 5% | 100% | ||
Inflows |
|||||
| Storage inflows (1) | 91,712 | 9% | 100% | ||
| Downstream tributaries (2) | 931,915 | 90% | 50% | ||
| Subtotal | 1,023,628 | 99% | |||
Net water diverted under riparian rights |
|||||
| Domestic and stock rights (3) | 4,950 | 0% | 0% | ||
| Native title rights | - | 0% | |||
| Subtotal | 4,950 | 0% | |||
Net Water diverted under access licences |
|||||
| Domestic and stock | 378 | 0% | |||
| High security | 7,182 | 1% | 100% | ||
| General security | 47,269 | 5% | 100% | ||
| Local water utility | 6,614 | 1% | 100% | ||
| Major utility | 28,401 | 3% | 100% | ||
| Major Utility (dilution) | - | 0% | 100% | ||
| Supplementary water | 34,423 | 3% | 100% | ||
| Barnard Reserve (dilution) | - | 0% | 100% | ||
| Subtotal | 122,267 | 12% | 100% | ||
Environmental water |
|||||
| Environmental flows (Plan) | 30,984 | 3% | 100% | ||
| End of system flows (5) | 825,987 | 80% | 90% | ||
| Subtotal | 856,971 | 83% | |||
Other outflows |
|||||
| Unaccounted difference (6) | - | 0% | |||
Total |
1,034,177 |
100% |
1,034,177 |
100% |
|
Notes:
- Calculated from Glenbawn and Glennies Creek Dams evaporation and releases, less storage drawdown and Barnard Reserve inflows.
- Downstream tributaries - assessed by mass balance at Greta - recorded trib flows were 631,635
- Basic rights are not metered. Values presented are those in the Water Sharing Plan.
- Barnard Reserve accumulates from an inter valley physical transfer. Total Barnard Reserve at end of month 0 Volume for 2012-13 only.
- Gauged at Greta (not the end) - flows greater than environmental target are provided.
- All unaccounted source flows included in tributary inflows.
