commence-to-flow for anabranch channels (Commonwealth of Australia 2015). Commence-to-flow heights were recorded to the nearest vertical metre. Snag data were obtained from the NSW DPI Fisheries that had been collected for the Fish and Flows in the Northern Basin Project in 2015 (NSW DPI 2015). The height above the current water level was recorded using a similar method as that used for benches and anabranches. As part of the Fish and Flows in the Northern Basin Project snags were classified into four grades of complexity (Figure D1). The vertical commence-to-flow heights of individual habitats above the current water level at the time of field survey were converted to a gauged height at the nearest river flow gauge. Benches and anabranches upstream of the Warrego River confluence were linked to the Weir 19A (NSW 425037) gauge upstream of the Selected Area, while benches and anabranches downstream of the confluence were linked to the gauging station at Louth (NSW425004) (Figure D3). Snags for the entire reach of the Darling River within the Selected Area were linked to the Weir 19A gauge only. These gauges were chosen as they best reflected the hydrology of these sections of the Darling River. However, final commence-to-flow discharges were reported at the Bourke Town (NSW 425003) gauging station as it has a more comprehensive flow record. In order to do this, relationships between the Louth and Weir 19A
commence-to-flow for anabranch channels (Commonwealth of Australia 2015). Commence-to-flow heights were recorded to the nearest vertical metre. Snag data were obtained from the NSW DPI Fisheries that had been collected for the Fish and Flows in the Northern Basin Project in 2015 (NSW DPI 2015). The height above the current water level was recorded using a similar method as that used for benches and anabranches. As part of the Fish and Flows in the Northern Basin Project snags were classified into four grades of complexity (Figure D1). The vertical commence-to-flow heights of individual habitats above the current water level at the time of field survey were converted to a gauged height at the nearest river flow gauge. Benches and anabranches upstream of the Warrego River confluence were linked to the Weir 19A (NSW 425037) gauge upstream of the Selected Area, while benches and anabranches downstream of the confluence were linked to the gauging station at Louth (NSW425004) (Figure D3). Snags for the entire reach of the Darling River within the Selected Area were linked to the Weir 19A gauge only. These gauges were chosen as they best reflected the hydrology of these sections of the Darling River. However, final commence-to-flow discharges were reported at the Bourke Town (NSW 425003) gauging station as it has a more comprehensive flow record. In order to do this, relationships between the Louth and Weir 19A
warrego-darling-ltim-report-2015-16-appendices.docx