ARR 4.2 Climate Change in Stormwater Modelling - Technical Webinar
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Technical Webinar: ARR 4.2 Climate Change Updates in Stormwater Modelling
Presented live on Tuesday 18 March from 1-2pm AEDT. Full recording now available.
The ARR v4.2 release marks a pivotal shift in modelling climate change impacts, particularly in rainfall and loss calculations.
Watch now for essential insights and practical guidance on applying the new methodologies in real-world scenarios.
Presented by Hossein Ansari (Technical Manager at Watercom) and followed by a Q&A session.
What to Expect
This webinar explores the implications of the newly updated ARR v4.2 guidelines, which now integrate climate change considerations. The presentation focuses on projected increases in rainfall intensity, particularly for short-duration storms, and their impact on stormwater infrastructure such as detention basins.
The presentation also includes a demonstration of the Watercom Climate Change Rainfall Modifier.
Key Topics Covered
- Climate Change Projections: Shared Socioeconomic Pathways (SSPs) and their role in predicting changes in rainfall intensity.
- Case Study: Analysis of a residential development, comparing pre- and post-development scenarios, including impervious area changes and critical storm durations.
- Stormwater Design Impacts: Evaluating detention basin design requirements, failure risks under various SSP scenarios, and implications of inadequate designs.
- Design Guidelines: Practical recommendations for selecting SSPs based on project timelines and performing sensitivity analyses.
Q&A Session
A live Q&A session followed the webinar presentation, and has been included in this recording. Session participants are:
- Dr. Benjamin Kus, CEO of Watercom and contributing author of ARR.
- Dr. Ashis Dey, General Manager of Watercom
- Jonathan Klaric, Senior Software Solutions Developer
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Your Presenter
Hossein Ansari
Technical Manager & Principal Engineer,
Watercom
Hossein Ansari
Technical Manager & Principal Engineer, Watercom
Hossein Ansari is an experienced Civil Engineer with over two decades of work in both private and public sectors. He has previously held roles as a Senior Design Engineer at Sutherland Shire Council and as a Drainage Investigation Engineer at City of Botany Bay Council.
In 2018, Hossein became a co-presenter for the DRAINS workshops alongside Benjamin Kus and Geoffrey O’Loughlin. In 2022, he was appointed as the Technical Services Manager & Principal Engineer at Watercom.
As a consultant, Hossein has been offering his expertise as a Civil Hydraulic Engineer to various consulting firms since 2007 in Australia. His work has encompassed roads, drainage, overland flow path studies, and Water Sensitive Urban Design (WSUD) projects, from initial planning to final design and construction.
His major interests include hydrological and hydraulic modelling and design utilising various computer software programs including DRAINS, HEC-RAS, ILSAX, Civil 3D, AutoCAD, Civil Site Design, MapInfo, QGIS, ArcMap and other GIS software.
Hossein actively contributes to the education of future engineers by delivering lectures at multiple universities, including the University of Technology Sydney (UTS) and Charles Darwin University (CDU).