Dive into a comprehensive webinar on Australian Rainfall and Runoff (ARR) Essentials, launching an 8-part intensive training series. Explore the fundamentals of ARR, including major changes since the 1987 edition, new approaches for assessing climate change, and the philosophy behind flood risk assessment. Gain insights into rainfall design inputs, flood frequency analysis, hydrologic modeling applications, flood hydraulics, design estimation, extreme events, and urban flood modeling approaches. Learn about ARR's history, terminology, frequency descriptors, uncertainty, data usage, and risk-based design. Discover how ARR serves as a pivotal framework for infrastructure safety, town planning, mining, flood management, and extreme flood level estimation across Australia's varied climates. Access additional resources, participate in a Q&A session, and prepare for the upcoming course series designed for engineers, consultants, modelers, policymakers, and water industry professionals.