Sydney
42.5 Releases from storages
Supporting Information
The total releases from storages were 939,755 ML. The volume accounted for in this line item includes releases made to supplement river flows to meet riparian rights (line item 17.6), rules-based environmental flow releases and releases to supply customers (line item 17.2).
Storage/weir |
Releases to supply during the 2010–11 year (ML) |
Other releases during the 2010–11 year (ML) |
Riparian releases during the 2010–11 year (ML) |
Environmental releases during the 2010–11 year (ML) |
Total (ML) |
Cataract |
38,069 |
– |
– |
17,896 |
55,965 |
Cordeaux |
5,266 |
– |
– |
8,624 |
13,890 |
Avon |
28,976 |
– |
– |
10,490 |
39,466 |
Nepean |
38,017 |
10,978 |
– |
17,495 |
66,490 |
Woronora |
15,778 |
– |
– |
7,126 |
22,904 |
Lake Burragorang (Warragamba Dam) |
281,795 |
2,907 |
9,837 |
3,197 |
297,736 |
Prospect |
4,368 |
5,419 |
– |
0 |
9,787 |
Wingecarribee |
3,477 |
26,285 |
365 |
1,095 |
31,222 |
Fitzroy Falls |
– |
– |
– |
9,726 |
9,726 |
Lake Yarrunga (Tallowa Dam) |
6,574 |
16,419 |
– |
219,245 |
242,238 |
Blue Mountains |
4,552 |
224 |
– |
– |
4,776 |
Pheasants Nest Weir |
– |
– |
– |
38,877 |
38,877 |
Broughton Pass Weir |
80,561 |
– |
– |
24,649 |
105,680 |
Lake Wallace |
– |
– |
1,205 |
– |
1,205 |
Thomson Creek Reservoir |
– |
– |
263 |
– |
263 |
Total |
507,433 |
62,232 |
11,670 |
358,420 |
939,755 |
Quantification Approach
Data Source
Provided by
Method
Known release rates from flow meters, orifice plates, valves with rating tables or measured outlets were used to derive the volume.
Assumptions, Limitations, Caveats and Approximations
Uncertainty Information
The volume is based on measured data. Estimated uncertainty based on meter accuracy, and professional judgment on rating tables and site configuration issues is +/– 10%.