Flow dynamics are closely linked to the life history traits of freshwater organisms. These organisms have evolved to cope with predictable flow dynamics and patterns of disturbance, such as seasonal flow variation or floods. Many rely on these predictable events and disturbances as signals for mating, hatching, emergence and migration. However, artificially altered flow regimes can interrupt or even prevent these critical life events from occurring. They also alter nutrient concentrations, flow rates and sizes, and habitat availability. Restoring natural flow regimes may improve river health, very little about the time required for rivers to return to a state of good health once human impacts cease is known. In addition, the specific effects of flow on macroinvertebrate morphology and life history traits remains poorly understood. This study aims to assess the effects of flow on macroinvertebrate life history traits and morphology, and to investigate how long a river takes to recover once returned to natural flows. Pretty Valley Creek, located in Alpine Victorian, provides a rare opportunity to study these effects as it was recently returned to antecedent flows and is pollution-free. Using an mBACI design, we investigated changes in the macroinvertebrate assemblages of the creek, both before and after natural flow restoration. Preliminary analysis indicates rapid recovery of many of the common macroinvertebrate orders following the cessation of artificial flows. This research provides important insights into the length of time required for rivers to return to pre-disturbance levels, and furthers our understanding of how flow affects macroinvertebrate assemblages.