Attachment 1
Number of Days of Rationing at Each Step for
Three Different Rationing Regimes
1. With Dam: Cease Take of 2200 l/sec
Days of rationing in each hydrological year - trigger at Irvines
Using a 2,200 l/s trigger at Irvines
Year
2005-06
2006-07
2007-08
2008-09
2009-10
2010-11
2011-12
2012-13
2013-14
2014-15
Stage 1 (20%)
18.6
34.6
38.3
29.0
31.9
17.5
4.7
41.0
21.8
47.0
Stage 2 (50%)
2.5
4.2
11.7
6.4
1.0
4.6
0.0
3.0
4.1
2.5
Cease take
102.8
56.4
41.0
0.0
49.3
26.5
0.0
18.2
11.8
19.8
Total of all stages
124.0
95.1
90.9
35.5
82.2
48.5
4.7
62.3
37.7
69.3
2. With Dam: Cease Take of 2050 l/sec
Days of rationing in each hydrological year - trigger at Irvines
Using a 2,050 l/s trigger at Irvines
Year
2005-06
2006-07
2007-08
2008-09
2009-10
2010-11
2011-12
2012-13
2013-14
2014-15
Stage 1 (20%)
18.6
34.6
38.3
29.0
31.9
17.5
4.7
41.0
21.8
47.0
Stage 2 (50%)
20.7
9.3
34.5
6.4
2.9
20.8
0.0
7.2
13.7
18.6
Cease take
84.7
51.2
18.0
0.0
47.4
10.3
0.0
14.0
2.2
3.7
Total of all stages
124.0
95.1
90.9
35.5
82.2
48.5
4.7
62.3
37.7
69.3
3. Without Dam: Minimum Flow 800 l/sec
Days of rationing in each hydrological year - trigger at Appleby
Using 800 l/s trigger at Appleby
Year
200506
200607
200708
200809
200910
201011
201112
201213
201314
201415
Stage 1
(20%)
Stage 2
(50%)
Below target minimum (800 l/s)
Total of all
stages
18.6
63.9
41.5
124.0
34.6
60.5
0.0
95.1
38.3
42.7
9.9
90.9
29.0
6.4
0.0
35.5
31.9
29.0
21.3
82.2
17.5
18.0
13.0
48.5
4.7
0.0
0.0
4.7
41.0
21.2
0.0
62.3
21.8
15.9
0.0
37.7
47.0
22.3
0.0
69.3