This course introduces the core principles of peak flow estimation using Flood Frequency Analysis (FFA) and the Regional Flood Frequency Estimation (RFFE) method. Participants learn why peak flows matter for design, how AMS (Annual Maxima Series) and threshold based series are built, and why FFA remains the most reliable way to estimate flood quantiles. The course also covers ARR2019 updates, modern fitting techniques, and the practical advantages of using FLIKE for Bayesian analysis, censoring low flows, and incorporating historical events.

Participants explore how to assess data quality, rating curves, water years, and historical sources such as TROVE to build defendable flood records. The course explains key distributions (GEV, LP3), plotting positions, and how Multiple Grubbs–Beck improves curve stability. Clear guidance is provided on when to use at site FFA versus RFFE, and how regionalisation works across Australia’s diverse hydrological zones.

Hands on exercises guide participants through constructing AMS, applying thresholds, adding historical floods, and comparing at site and regional results. By the end, participants will be confident in producing robust peak flow estimates that align with the ARR guidelines for both gauged and ungauged catchments, ready to apply directly to real world design and modelling.

For more details visit: https://awschool.com.au/training/flood-frequency-analysis/