Climate modelling approach
To help explain our new climate modelling approach we have developed a report that summarises the data we have used, and the way we have used it to develop new long-term datasets to represent a wide range of plausible climate events. We then use these datasets in our water planning models, which model the whole waterway system, including headwaters, storages, lakes, groundwater, and flows.
The new modelling shows that our water supplies in NSW could be less secure than we thought. By using paleoclimate data we have factored in that droughts longer than those of the last 130 years are likely at some point, and that we could see higher temperatures and less rainfall.