The application reported in this case study involves the Macquarie Marshes, an ephemeral wetland on the Macquarie River in north-west New South Wales (NSW), Australia. Flooding in the Marshes has declined over the last 50 years and the use of irrigation has increased considerably in the Macquarie Valley since the construction of Burrendong Dam on the Macquarie River in 1967. The allocation of Macquarie Valley water to irrigation and away from the Macquarie Marshes has resulted from a fundamental imbalance in the market for water. The objective of the valuation exercise was the estimation of the non-use environmental values provided by the Macquarie Marshes. Specifically, the project sought to identify the monetary value the wider community has for improved environmental quality of the Marshes associated with the reallocation of water from irrigation agriculture to environmental flows for wetland rehabilitation. The studt applied the choice modelling method.