Annex A. Other watering actions associated with water quality Table A1 lists those watering actions that explicitly targeted water quality outcomes (as distinct from stream metabolism) or for which water quality was a target of monitoring. The three Barwon–Darling watering actions listed in Table 2 also had the water quality objective quality improvement including ‘Water salinity and potential for algal blooms’. Similarly, three of the six Goulburn River watering actions in Table 2 also had the water quality objective ‘Maintain water quality’. A1. Watering actions explicitly targeting water quality outcomes (as distinct from stream metabolism) or for which water quality was the target of monitoring. Dates Flow Commonwealth Location Observed component environmental Expected ecological outcome Monitored site(s) ecological Influences (CEWO Action type water volume outcomes Reference) delivered (ML) Broken Creek (lower) 18/08/15 Base flow 7183 Manage excessive azolla growth. Rices Weir – – Reach 3 30/11/15 (10041-01 2015–16) Broken Creek (lower) 01/10/15 Base flow 23 542 Maintain water quality, including Rices Weir Low oxygen High – 3 16/05/16 dissolved oxygen (DO) levels >5 mg/L. in early March temperature (10041-01 2015–16) 2016 (30 °C), (O2 < 2mg/L) decomposition and respiration of blue-green algae Broken Creek (lower) 28/09/15 Fresh 6188 Remove azolla blooms. Rices Weir – Reach 3 30/11/15 (10041-01 2015–16) Campaspe 4 26/08/15 Fresh 1700 and mix pools for improved water Not monitored Not monitored – – (10003-02 2015–16) 05/09/15 quality. Campaspe 4 27/10/15 Fresh flow 1559 Flush and mix pools for improved water Not monitored Not monitored – – (10003-02 2015–16) 04/11/15 quality. Mitigate threat of a summer toxic blackwater event. Edward–Wakool 17/09/15 Base flow; 2000 Maintain/improve water quality Tuppal Creek – (10038-05) 22/11/15 fresh (especially dissolved oxygen, pH and salinity).
Annex A. Other watering actions associated with water quality Table A1 lists those watering actions that explicitly targeted water quality outcomes (as distinct from stream metabolism) or for which water quality was a target of monitoring. The three Barwon–Darling watering actions listed in Table 2 also had the water quality objective ‘Water quality improvement including salinity and potential for algal blooms’. Similarly, three of the six Goulburn River watering actions in Table 2 also had the water quality objective ‘Maintain water quality’. A1. Watering actions explicitly targeting water quality outcomes (as distinct from stream metabolism) or for which water quality was the target of monitoring. Location (CEWO Action Reference) Dates Flow component type Commonwealth environmental water volume delivered (ML) Expected ecological outcome Monitored site(s) Observed ecological outcomes Influences Broken Creek (lower) – Reach 3 (10041-01 2015–16) 18/08/15 – 30/11/15 Base flow 7183 Manage excessive azolla growth. Rices Weir Broken Creek (lower) 3 (10041-01 2015–16) 01/10/15 – 16/05/16 Base flow 23 542 Maintain water quality, including dissolved oxygen (DO) levels >5 mg/L. Rices Weir Low oxygen in early March 2016 (O2 < 2mg/L) High temperature (30 °C), decomposition and respiration of blue-green algae Broken Creek (lower) 3 (10041-01 2015–16) 28/09/15 – 30/11/15 Fresh 6188 Remove azolla blooms. Rices Weir Campaspe – Reach 4 (10003-02 2015–16) 26/08/15 – 05/09/15 Fresh 1700 and mix pools for improved water quality. Not monitored Not monitored Campaspe – 4 (10003-02 2015–16) 27/10/15 – 04/11/15 Fresh flow 1559 Flush and mix pools for improved water quality. Mitigate threat of a summer toxic blackwater event. Not monitored Not monitored Edward–Wakool (10038-05) 17/09/15 – 22/11/15 Base flow; fresh 2000 Maintain/improve water quality (especially dissolved oxygen, pH and salinity). Tuppal Creek
2015-16-basin-evaluation-app-c-stream-metabolism.docx