'Near to final' draft for independent review - 9 May 2016 Table 2: Lower Balonne River Floodplain UEA site-specific flow indicators related to drought refuges. In this table, frequency is the maximum number of days between events. The frequency range is shown from low uncertainty to high uncertainty. Magnitude: flow Duration Basis of Frequency Basis of magnitude Timing Basis of timing Basis of frequency (ML/d) (days) duration range Set at the reach scale - The primary Upstream waterhole Minimum time based on modelled Any flow, taken aim is to break 350 - 430 days refuges are topped up step in the persistence time to a as 2 ML/d, Any time up long dry (maximum as there is an 1 model for a depth of 0.5 m in four Culgoa River at of year spells: timing period between observed flow at the flow to be waterholes (350 days), Weilmoringle is not flow events) downstream gauge observed or two waterholes (430 important. days) in the Culgoa River Set at the reach scale - based on modelled Any flow, taken 350 - 470 days persistence time to a as 2 ML/d, As (maximum As above As above As above As above depth of 0.5 m in four Narran River at above period between waterholes (350 days), Narran Park flow events) or two waterholes (470 days) in the Narran River Page 50
'Near to final' draft for independent review - 9 May 2016 Table 2: Lower Balonne River Floodplain UEA site-specific flow indicators related to drought refuges. In this table, frequency is the maximum number of days between events. The frequency range is shown from low uncertainty to high uncertainty. Magnitude: flow (ML/d) Basis of magnitude Duration (days) Basis of duration Timing Basis of timing Frequency range Basis of frequency Any flow, taken as 2 ML/d, Culgoa River at Weilmoringle Upstream waterhole refuges are topped up as there is an observed flow at the downstream gauge 1 Minimum time step in the model for a flow to be observed Any time of year The primary aim is to break up long dry spells: timing is not important. 350 - 430 days (maximum period between flow events) Set at the reach scale - based on modelled persistence time to a depth of 0.5 m in four waterholes (350 days), or two waterholes (430 days) in the Culgoa River Any flow, taken as 2 ML/d, Narran River at Narran Park As above As above As above As above As above 350 - 470 days (maximum period between flow events) Set at the reach scale - based on modelled persistence time to a depth of 0.5 m in four waterholes (350 days), or two waterholes (470 days) in the Narran River Page 50
EWR-Condamine-Balonne-draft.docx