This talk will summarize 10 years of daily stream metabolism data collected from multiple sites on the lower Goulburn River in Victoria. This work was undertaken as part of a larger program looking at riverine health across the Murray-Darling Basin, funded by the Federal Government's Commonwealth Environmental Water Office. The Goulburn is a major tributary of the Murray River and is subject to large disturbances of the natural flow regime, partly due to downstream water requirements. The talk will focus on two parameters derived from stream metabolism - the amount of organic carbon (aka "fish food") created daily at particular points in the river and how much carbon is being created in the entire river reach from the Goulburn Weir to the confluence with the Murray. In particular, the relationships with river discharge events will be explored and how these can help guide river management. Finally, the complexities of scaling up to catchment and larger areas will be discussed.