Fig. 7. Nested structure of the irrigation infrastructure network in the Goulburn Broken Catchment. At the catchment scale, there are a small number of large dams, i.e., nodes, with sections of natural waterways and large canals, i.e., links, are used to capture and transport water. At the irrigation region, a landscape-scale network of infrastructure transfers water between temporary storages or nodes and to irrigation properties via open channels or edges. At the farm scale, the irrigation network connects intermittently to canals, i.e., the links of the landscape-scale network above, when irrigation water is required for pastures and crops.