Interim national guidance non-stationary fluvial flood frequency estimation
New tools and techniques to help us detect and take account of non-stationarity in flood frequency estimation for flood scheme appraisal.
![](https://assets.publishing.service.gov.uk/media/6037b7ace90e07055c140485/s300_non_stat.jpg)
The purpose of this project was to develop new tools and techniques to help us detect and take account of non-stationarity in flood frequency estimation for flood scheme appraisal.
You can also order a copy of the R Package (nonstat) - a collection of code, documentation and data that allow users to easily carry out complex statistical analysis - and the digital outputs from the project.