Appendix 2 Potential effects on townships within the reach Table 5: Potential effects recorded for townships within the Yarrawonga Weir to Wakool Junction reach. Gauge and flood level Location Flow rates investigated based on Tocumwal gauge Up to 20,000 ML/day (3.52 m)a 20,000 - 35,000 ML/day (4.78 m)a 35,000 - 50,000 ML/day (5.7 m)a 50,000 - 77,000 ML/day (6.4 m)a Yarrawonga gauge Min – 6.4m Mod – 6.7m Maj – 7.8m 22,000b (3.0 m) 36,000b (4.2 m) 52,000b (5.2 m) 82,000b (6.4 m) Yarrawonga No effects reported No effects reported No effects reported Local golf course affected at flows 68,000b ML/day at Yarrawonga Cobram No effects reported No effects reported No effects reported No effects reported Tocumwal gauge Min – 6.4m Mod – 6.7m Maj – 7.3m 20,000 (3.52 m)a 35,000 (4.78 m)a 50,000 (5.7 m)a 77,000 (6.4 m) Tocumwal Access to Tocumwal Beach boat ramp closed Carpark near pontoon closed Town stormwater drains closed Close Barooga Cowl drainage gate Town Beach Rd closed Lower River Rd causeways running Access Rd closed — Bushlands Caravan Park Barmah 11,000 (3.35 m) 20,000 (5.02 m) 29,000 (6.38 m) 35,000 (6.81 m)
Min – 6.0m Mod – 6.5m Maj – 7.0m Barmah Not assessed Not assessed Potential effects Additional analysis required Potential effects at Barmah Caravan Park Levee network provides protection to ARI event Echuca gauge (m AHD) Min – 93.5 Mod – 93.9 Maj – 94.4 Echuca No effects reported No effects reported River boat operations ceased during 2010 was 7.66 m) NCCMA to advise of potential effects on new residential development Moama No effects reported No effects reported No effects reported RiM-FIM modelling shows lower areas of 2 x caravan parks in Moama being affected ML/day Echuca). 22,000 (5.52 m) 25,000 (5.81 m) 28,000 (5.99 m) 35,000 (6.18 m)
Barham gauge Min – 5 5 m Mod – 5.8 m Maj – 6.1 m Barham No effects reported No effects reported No effects reported 1 in 5-year ARI modelled as 28,400 ML/day No effects reported unless levee failure occurs 1 in 50-year ARI modelled as 34,900 ML/day Koondrook No effects reported No effects reported No effects reported No effects reported Murrabit No effects reported No effects reported No effects reported No effects reported Township relies on River Murray levee. NB difficult to use historic flow/flood information due to extensive new development on NSW side of River Murray 20,000 (3.38 m) 24,000 (3.94 m) 25,000 (4.07 m) 32,000 (4.68 m)
Swan Hill gauge Min – 4.5m Mod – 4.6m Maj – 4.7m Swan Hill No effects reported No effects reported No effects reported 1 in 2-year ARI modelled as 25,700 Potential effects on parts of town caravan and ‘riverside’ park 1 in 20-year ARI modelled as 32,600 ML/day Murray Downs No effects reported No effects reported No effects reported 1 in 2-year ARI modelled as 25,700 No effects reported 1 in 20-year ARI modelled as 32,600 ML/day Tooleybuc No effects reported No effects reported No effects reported 1 in 2-year ARI modelled as 25,700 ML/d No effects reported 1 in 20-year ARI modelled as 32,600 ML/day 7,500 (n/a)b 14,000b (4.2 m) 23,000b (5.22 m) 48,000b (7.12 m)
Deniliquin Min – 4.6m Mod – 7.2m Maj – 9.4m Deniliquin, No effects reported Close golfcourse flood gate (3.9m) Relocate McLean’s Beach toilet (mobile) if forecast height >4.5 m (3.9 m) Walk bridges closed at 4.3–4.6 m Water enters Island Sanctuary Reserve (4.66 m) Close Butler St pipe under levee (5.0 m) Evacuate McLean’s Caravan Park (5.7 m) Butler St gate valve (5.7 m) McLean Beach Sewer pump station inundated (5.84 m) Close Wyatt St levee outlet (6.4 m) Close Crispe St gate valve (near Deni CarOTel) (6.88 m) Close Crispe St gate valve (behind Middy’s) (6.96 m) Moulamein gauge Min –4.6 Mod –5.2 Maj – 6.1 5,000b (3.5 m) 7,000b (4.1 m) 8,000b (4.5 m) 17,000b (5.5 m) Moulamein No effects reported No effects reported No effects reported No effects reported Source: Data were collected from flood studies and discussions with local councils between 2013 and 2014. a Flow rates were based on the Tocumwal gauge and were the basis for the RiM-FIM modelling. b Flow were estimated by correlation of historic flows using average travel time. Data for these gauges were not used in the development of inundation maps but have been provided to assist interpretation of the flows being studied. Appendix 3 Key issues register Table 6 provides a summary of key issues and how it is proposed to addressed them, at the time of publication. Some of these matters may take time to resolve, and additional matters may arise. Unresolved matters will continue to be addressed through Feasibility and/or Implementation phases.