Applicable level(s) of resource availability Broad Asset Indicative demand Very Low Low Moderate High Very High Coorong Minimum barrage flow of 650 GL/yr 11a. Seasonal Lake Level Lower Variation: Between 0.40 m AHD Barrage flows of 2,000 GL/yr required to Lakes and and 0.80 m HD annually. achieve salinity target in Lake Alexandrina Murray Fishway Flows: Maintain minimum Barrage flows of at least 2 500 GL over two Mouth fishway flows years to avoid damage and protect habitat conditions within the Coorong Differential Barrage releases: To provide for connectivity Barrage flows of 6,000 GL every three between the Coorong, Lower years to maintain and improve habitat Lakes and the Murray Mouth, conditions within the Coorong. improve Coorong water quality and maintain suitable estuarine conditions in the North lagoon and Murray Mouth Barrage flows of 10 000 GL every seven 11b. Seasonal Lake Level Variation: Between 0.50 m AHD and 0.85 m AHD one in three years years to improve habitat conditions within the Coorong Fishway Flows: Maintain minimum fishway flows Differential barrage releases: To provide for seasonally appropriate water levels in the Coorong and connectivity between the Lower Lakes and the Murray Mouth
Broad Asset Indicative demand Applicable level(s) of resource availability Very Low Low Moderate High Very High Coorong Lower Lakes and Murray Mouth Minimum barrage flow of 650 GL/yr Barrage flows of 2,000 GL/yr required to achieve salinity target in Lake Alexandrina Barrage flows of at least 2 500 GL over two years to avoid damage and protect habitat conditions within the Coorong Barrage flows of 6,000 GL every three years to maintain and improve habitat conditions within the Coorong. 11a. Seasonal Lake Level Variation: Between 0.40 m AHD and 0.80 m HD annually. Fishway Flows: Maintain minimum fishway flows Differential Barrage releases: To provide for connectivity between the Coorong, Lower Lakes and the Murray Mouth, improve Coorong water quality and maintain suitable estuarine conditions in the North lagoon and Murray Mouth Barrage flows of 10 000 GL every seven years to improve habitat conditions within the Coorong 11b. Seasonal Lake Level Variation: Between 0.50 m AHD and 0.85 m AHD one in three years Fishway Flows: Maintain minimum fishway flows Differential barrage releases: To provide for seasonally appropriate water levels in the Coorong and connectivity between the Lower Lakes and the Murray Mouth
portfolio-mgt-plan-lower-murray-darling-2017-18.docx