Sunday 15 November, Science & Systems

Story one of ten today, about seven minutes for the lot

Concrete shelter building on snow-covered mountain slope with snow-capped peaks in distance
✓ The Canberra TimesScience & Systems1 min read

What are those octagonal structures scattered across the Snowy Mountains?

They are monitoring stations from Snowy Hydro's former cloud-seeding program.

Hikers regularly encounter mysterious octagonal structures dotted across the Snowy Mountains. The octagonal structures are just monitoring stations from a cloud-seeding program.

Snowy Hydro crews shot silver iodide particles into clouds. The particles helped ice crystals form.

This increased rain and snow reaching the program's dams. More than 20 fixed stations measured rainfall, wind and weather patterns.

The program ended last year. The stations remain while Snowy Hydro plans their removal.

More than 20 fixed locations
Monitoring stations
52 years with Snowy Hydro
Tony Werrett tenure
Dandenong
Tony's birthplace

Why it mattersSolves a long mystery for Snowy Mountains hikers and reveals forgotten infrastructure.

AustraliaThe Snowy Scheme supplies water to millions across southeastern Australia; these structures reveal decades of effort to maximise that flow.

✓ Claims checked against the source. checked 15 h ago

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