Rain on Water - Public Transport Authority of Western...
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Monday, 8 December 2025
Our systemPublic Art Gallery

Public Art Gallery

The PTA has an extensive collection of public art which has developed and expanded with the network, from electrification of the trains in the early 1990s to the METRONET program in recent years.

Explore our gallery to find out more about the artworks that you encounter in your regular public transport journeys, or to inspire you to travel to see more of the great art in the collection.

Discover their locations, the artists’ names, and the background behind each piece.

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Rain on Water

Geoffrey Drake-Brockman

Title: Rain on Water

Artist/s: Geoffrey Drake-Brockman

Year: 2014

Category: Integrated

Site: Butler Station 

Location Details: Concourse Level

Description:

A relief sculpture frieze along the full 40m width of the concourse are 1,200 aluminium rods of varying lengths mounted on a mirror-polished backing board. Each rod is topped with a brightly coloured square end-cap. Rain on Water is based on the action of ripples from raindrops propagating across a still water surface. This work represents the natural phenomena of raindrops falling on water, while drawing on mathematical modelling of waveforms, and extrapolating wave profiles into “colour space”. The artist wrote a computer algorithm to model the artwork’s form. The colour of the end-cap of each rod is in turn determined by its length; shorter rods are at the cool, blue end of the colour spectrum, while longer rods are at the warm or red end of the spectrum.

Tags: Integrated Artwork

The PTA acknowledges Traditional Owners of Country throughout Australia and recognises  the continuing connection to lands, waters and communities. We pay our respect to Aboriginal and Torres Strait Islander cultures; and to Elders past and present.   

Aboriginal and Torres Strait Islander people are advised that this site may contain images or names of people who are deceased.

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