Seen the new updates to ARR? Apply the latest climate change science to your models using the new Watercom Climate Change Rainfall Modifier!
WATERCOM RELEASES NEW TOOL
Climate Change Rainfall Modifier
Allows easy application of various climate change scenarios to rainfall depths and losses, in line with the latest ARR update.
ARR v4.2 Update
The Australian Rainfall & Runoff (ARR) guidelines have been updated with improved guidance on how to consider climate change when planning for future floods.
Climate Change Considerations
In 2024, ARR announced new guidance on how to consider climate change when estimating future flood risk.
Because our climate is changing, unadjusted historical observations are no longer a suitable basis for design flood estimation: they must be adjusted to reflect the impacts of rising global temperatures.
To consider the impact of climate change, the updated guidance requires adjusting rainfall depths and losses by applying a matrix of climate change factors. These factors include climate scenarios (also known as ‘Shared Socio-economic Pathways’ or SSPs) and the time horizon of interest.
To streamline this process and support best-practice modelling, Watercom has released the Climate Change Rainfall Modifier.
CLIMATE CHANGE RAINFALL MODIFIER
Automatically apply climate change scenarios to rainfall
In response to the recent updates to ARR (version 4.2), the Watercom Climate Change Rainfall Modifier was developed to streamline climate change modelling.
The Modifier automatically adjusts rainfall depths and losses based on a matrix of climate change factors defined in the ARR, including climate change scenarios (also known as SSPs) and time design horizons.
Who is it for?
The Climate Change Rainfall Modifier is for water engineers and practitioners who wish to utilise the latest ARR guidance and apply best-practice modelling techniques to their hydrological and hydraulic modelling.
How does it work?
Simply upload your rainfall data in two files (ARR Datahub & BOM IFD depth files) and select a climate scenario and time horizon. The Modifier will return updated data files, ready for import back into DRAINS or other software.
Have a question or feedback about the Watercom Climate Change Rainfall Modifier?
Register your interest to join our live webinar, or send us a message any time and we’ll get back to you as soon as we can.
REGISTER YOUR INTEREST
Live Webinar: ARR Climate Change Updates
We will be hosting a live webinar soon on the recent updates to the ARR guidelines. Register your interest below, and we’ll send you the details when available.
