'Near to final' draft for independent review - 2 May 2016 Appendix E - Frequency statistics Site-specific flow indicator Without Low High Baseline Maximum spell Maximum development^ uncertainty^ uncertainty^ frequency^ under without spell under development baseline 6,000 ML/d for 14 days any time of 96% 90% 80% 66% 2 years 3 years the year (Bourke) 6,000 ML/d for 20 days between 91% 70% 70% 58% 2 years 4 years August and May (Louth) Two 6,000 ML/d events for 7 days any 77% 60% 45% 42% 5 years 8 years time of the year (Wilcannia) 10,000 ML/d for 14 days between 89% 80% 60% 54% 3 years 6 years August and May (Bourke) Two 10,000 ML/d events for 20 days 42% 35% 25% 20% 7 years 12 years between August and May (Bourke) 21,000 ML/d for 20 days between 54% 40% 40% 32% 4 years 12 years August and May (Louth) 20,000 ML/d for 7 days any time of 70% 60% 45% 39% 3 years 8 years the year (Wilcannia) 30,000 ML/d for 24 days any time of 1.8 years 2 years 3 years 3.9 years 9 years 19 years the year (Bourke) 45,000 ML/d for 22 days any time of 3.3 years 3.5 years 4 years 4.9 years 15 years 29 years the year (Bourke) 65,000 ML/d for 24 days any time of 5.4 years 6 years 8 years 8.7 years 19 years 29 years the year (Bourke) 2,350 GL once flow is above 30,000 8 years 10 years 12 years 14 years 29 years 29 years ML/d any time in the year (Wilcannia) ^ - In these four columns, the '%' is percentage of years in which there is a watering event, and the 'years' is the average number of years between watering events. Page 77
'Near to final' draft for independent review - 2 May 2016 Appendix E - Frequency statistics Site-specific flow indicator Without development^ Low uncertainty^ High uncertainty^ Baseline frequency^ Maximum spell under without development Maximum spell under baseline 6,000 ML/d for 14 days any time of the year (Bourke) 96% 90% 80% 66% 2 years 3 years 6,000 ML/d for 20 days between August and May (Louth) 91% 70% 70% 58% 2 years 4 years Two 6,000 ML/d events for 7 days any time of the year (Wilcannia) 77% 60% 45% 42% 5 years 8 years 10,000 ML/d for 14 days between August and May (Bourke) 89% 80% 60% 54% 3 years 6 years Two 10,000 ML/d events for 20 days between August and May (Bourke) 42% 35% 25% 20% 7 years 12 years 21,000 ML/d for 20 days between August and May (Louth) 54% 40% 40% 32% 4 years 12 years 20,000 ML/d for 7 days any time of the year (Wilcannia) 70% 60% 45% 39% 3 years 8 years 30,000 ML/d for 24 days any time of the year (Bourke) 1.8 years 2 years 3 years 3.9 years 9 years 19 years 45,000 ML/d for 22 days any time of the year (Bourke) 3.3 years 3.5 years 4 years 4.9 years 15 years 29 years 65,000 ML/d for 24 days any time of the year (Bourke) 5.4 years 6 years 8 years 8.7 years 19 years 29 years 2,350 GL once flow is above 30,000 ML/d any time in the year (Wilcannia) 8 years 10 years 12 years 14 years 29 years 29 years ^ - In these four columns, the '%' is percentage of years in which there is a watering event, and the 'years' is the average number of years between watering events. Page 77
EWR-Barwon-Darling-draft.docx