The Canterbury Waterway Rehabilitation Experiment (CAREX) is a stakeholder-driven region-wide stream restoration experiment. We work with farmers, councils, iwi and the public to co-develop, co-design and trial solutions to rehabilitate freshwater ecosystem health. We focus on solutions that have the potential to scale and be applied across waterways in Canterbury, Aotearoa New Zealand and beyond. CAREX is testing practical tools to address aquatic weed, sediment, and nutrient management issues in lowland Canterbury and to improve agricultural waterway health. We are also developing demonstration sites to showcase how our rehabilitation tools are working on local farms and best practice in riparian management.