'Near to final' draft for independent review - 9 May 2016 Table 7: Summary of site-specific flow indicators for the Lower Balonne River Floodplain Umbrella Environmental Asset. Frequency shown with an * is the average period (years) between flow events. Ecological target Ecological Flow indicator Magnitude: Duration Timing Frequency function gauge flow (ML/d) (days) Low uncertainty High uncertainty Drought refuge Any flow 1 Provide a flow regime Weilmoringle Any time of 350 days - max. 430 days - max. which: (Culgoa River) year between events between events maintains drought refuges, Drought refuge Any flow 1 Narran Park Any time of 350 days - max. 470 days - max. and supports recruitment (Narran River) year between events between events opportunities, for a range of Any time of 90% of years with 80% of years native aquatic species (e.g. In-channel Brenda (Culgoa 1,000 7 > 1 event fish, frogs, turtles, year with > 1 event connectivity River) invertebrates) Fish migration Wilby Wilby 1,700 14 August - May 60% of years 40% of years supports the habitat requirements of waterbirds (Narran River) with > 1 event with > 1 event August - May 40% of years with ensures the current 60% of years Brenda (Culgoa Fish migration 3,500 14 with > 1 event > 1 event extent of native vegetation River) of the riparian, floodplain and Connectivity with Any time of 2 years 3 years wetland communities is 9,200 12 riparian zone year sustained in a healthy, Any time of 3.5 years 4 years dynamic and resilient Connectivity with 15,000 10 year condition inner floodplain supports key ecosystem 6 years 8 years functions, particularly those Connectivity with Any time of 24,500 7 mid floodplain year related to connectivity Any time of 10 years 20 years Connectivity with between the river and the 38,000 6 year outer floodplain floodplain Page 73
'Near to final' draft for independent review - 9 May 2016 Table 7: Summary of site-specific flow indicators for the Lower Balonne River Floodplain Umbrella Environmental Asset. Frequency shown with an * is the average period (years) between flow events. Ecological target Ecological function Flow indicator gauge Magnitude: flow (ML/d) Duration (days) Timing Frequency Low uncertainty High uncertainty Provide a flow regime which: maintains drought refuges, Drought refuge Weilmoringle (Culgoa River) Any flow 1 Any time of year 350 days - max. between events 430 days - max. between events and supports recruitment opportunities, for a range of Drought refuge Narran Park (Narran River) Any flow 1 Any time of year 350 days - max. between events 470 days - max. between events native aquatic species (e.g. fish, frogs, turtles, invertebrates) In-channel connectivity Brenda (Culgoa River) 1,000 7 Any time of year 90% of years with > 1 event 80% of years with > 1 event supports the habitat requirements of waterbirds Fish migration Wilby Wilby (Narran River) 1,700 14 August - May 60% of years with > 1 event 40% of years with > 1 event ensures the current extent of native vegetation of the riparian, floodplain and Fish migration Brenda (Culgoa River) 3,500 14 August - May 60% of years with > 1 event 40% of years with > 1 event wetland communities is sustained in a healthy, Connectivity with riparian zone 9,200 12 Any time of year 2 years 3 years dynamic and resilient condition supports key ecosystem Connectivity with inner floodplain 15,000 10 Any time of year 3.5 years 4 years functions, particularly those related to connectivity Connectivity with mid floodplain 24,500 7 Any time of year 6 years 8 years between the river and the floodplain Connectivity with outer floodplain 38,000 6 Any time of year 10 years 20 years Page 73