Barriers to fish passage, such as dams, weirs and culverts, are commonly implicated in the decline of native fish populations. These barriers act as behavioural and physical impediments to fish movement.  Various intervention options are available to waterway managers to mitigate these effects. Here we report on the evaluation of two fishway construction projects  in the broader Melbourne region of SE Australia. We first report of the effectiveness of the combined rock-ramp/vertical slot fishway at Dights Falls on the Yarra River; two years following construction. The evaluation is based on both an assessment of the efficiency at the fishway itself and a broader study of fish response throughout the catchment. We then report on the effectiveness of a combined rock-ramp culvert baffle treatment at a 70m long culvert in Cardinia Creek, based on a before-after-control-treatment study one year following construction. The results of these studies make a significant contribution to improved understanding of effectiveness of fish passage interventions.