Aerial view of a winding river channel through a floodplain

Service

Flood Hydrology & Modelling

1D/2D modelling

Overview

The model is the one piece of work that gets reused across every later stage of a project — approvals, detailed design, construction — so it’s built to be right once, not fast once.

Capabilities

Calibrated 1D/2D catchment and floodplain modelling to current Australian Rainfall & Runoff (ARR) methodology
Design rainfall derivation matched to climate — generalised short-duration methods and regional temporal patterns for tropical and arid-zone catchments, not a default template
Terrain and hydraulic structure representation built to survey-grade data where it’s available, so the model reflects the ground rather than an assumption about it
One calibrated model carried through from first assessment to final design — not rebuilt at each subsequent stage of a project

A model built only to answer the approvals question gets thrown away the moment approval lands, and the next consultant starts again from zero. Built the other way around, the same model answers the design questions too.

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