Factors contributing to the 2016 hypoxic blackwater event ReesGavin Centre for Freshwater Ecosystems 2020 MMCP Collaboration (MMCP) is a project supported by the Joint State Governments and the Murray-Darling Basin Authority to generate and adopt freshwater ecological knowledge through collaboration, to maintain research capability and contribute supporting science to underpin the Basin-Wide Watering Strategy.<div><br></div><div>The objectives of this theme within the MMCP is to help the Murray-Darling Basin Officials Committee (BOC) address specific questions as they arise. These question will have relevance to the on-going management of Basin Assets.<br></div><div><br></div><div>This synthesis paper is a response to a question poised by BOC, in relation to a major hypoxic blackwater event that occurred in 2016 in response to large unregulated flood events in rivers of the southern Murray-Darling Basin.<br></div>