on the floodplain, these projects are intended to deliver environmental outcomes to provide a greater extent of watering than the benchmark conditions, watering up to 350 ha for the Vinifera floodplain (55% of the total area, Figure 12), 500 ha for the Nyah floodplain (53% of the total area, Figure 13), and 407 ha for the Burra floodplain (33% of the total area, Figure 14). Proponent Victoria Resource units affected by the measure All surface water resource units in the southern Basin Representation of the project in the MDBA modelling framework In preparing the business cases for these projects, Victoria has developed various supporting materials including hydrodynamic models to assist designs of the proposed structures and their operating regimes. Based on the information provided by Victoria, MDBA has updated the Murray model and incorporated hydrologic characteristics of the project sites including intended operations of the works. Key model data that is agreed and endorsed is presented below. Figure : Overview of proposed works and inundation extent of the Vinifera Creek project Figure : Overview of proposed works and inundation extent of the Nyah Creek project Figure : Overview of proposed works and inundation extent of the Burra Creek project The Murray model represents the three works sites with one wetland and a branch flow per site to describe hydrological characteristics and operations of the proposed works (Figure 15). Figure : Representation of the Vinifera, Nyah and Burra Floodplains in the Murray model Key information used to model the sites is presented at Table 14 and Table 15. There are three modes of operations for each project as described at Table 14. Table 14: Level-volume-area relationship to represent wetlands in the Vinifera, Nyah and Burra projects Vinifera Nyah Burra Level (mAHD) Volume (ML) Area (ha) Level (mAHD) Volume (ML) Area (ha) Level (mAHD) Volume (ML) Area (ha) 63.6 0 0 61.4 0 0 57 0 0 63.7 813 145 62.5 858 203 57.3 264 34 64.3 3392 493 62.7 1350 313 57.7 383 40 64.49 4680 590 62.9 1710 385 58.2 723 82 64.5 5000 627 63.2 3390 558 58.7 1496 307 46.51 5210 637 63.3 3420 582 58.8 2110 450
Appendix C - Modelled results (measure-by-measure) Table Key water balance results for the Murray and Lower Darling Valley Water balance (GL/yr) Benchmark Koondrook TLM Gunbower TLM and Gunbower National park Hattah lakes TLM and Hattah lakes North Lindsay Island: Stage 1 and Stage 2 Chowilla TLM Mulcra island and Lock 8 Vinifera- Nyah and Burra Ck Wallpolla and Lock 9 SARFIP Rule change to Hume dam airspace and Flexible rate of fall to RMIF callout Rule change for Lakes water saving project Riverine project Flow for Future South East flow restoration project Inflow 13369 13369 13370 13369 13,369 13,370 13,369 13369 13369 13369 13369 13369 13370 13369 13378 13368 13371 13369 13369 13369 Diversion 2944 2950 2948 2952 2,941 2,932 2,938 2947 2944 2943 2943 2949 2944 2944 2943 2950 2934 2949 2943 2944 NSW Murray 1226 1233 1230 1235 1,226 1,218 1,222 1231 1227 1226 1226 1233 1227 1228 1220 1237 1245 1225 1226 1226 Victoria Murray 1196 1194 1197 1195 1,193 1,192 1,194 1195 1196 1195 1195 1195 1196 1195 1203 1191 1198 1196 1196 1196 SA Murray 481 482 481 481 481 481 481 481 481 481 481 481 481 481 479 482 482 488 481 481 Lower Darling 40 40 40 40 41 41 41 40 40 40 40 40 40 40 40 40 10 40 40 40 Loss 3403 3415 3406 3412 3,439 3,425 3,416 3401 3404 3398 3400 3401 3402 3403 3404 3399 3361 3397 3404 3403 Outflow 7090 7071 7083 7072 7,056 7,081 7,083 7088 7088 7095 7093 7087 7090 7089 7098 7086 7144 7090 7091 7090