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Agricultural Equipment > Meters

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Dethridge wheel, irrigation water meter, 1990
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Object statement
Water meter, Dethridge wheel, steel, used by Murrumbidgee Irrigation Pty Ltd, Australia, 1990
In 1910 John Dethridge created a wheel that could measure the amount of water flowing past it in a channel. This made it possible to monitor the volume of water flowing from a river to an individual farm. It was an important innovation in the development of the irrigation districts along the rivers of the Murray Darling Basin during the first half of the 20th Century. When farmers settled along NSW rivers, the government gave them rights to extract river water for their crops. Each farmer could only take a specified amount. As irrigated farms grew in number and size it became apparent that water would be a limited resource that should be shared equitably.
The original Dethridge wheel was designed by John Dethridge in 1910.

This particular Dethridge wheel was made in Griffith NSW from parts that were fabricated in Leeton, NSW. This wheel was made in 1990. The life of a wheel is generally 15 to 20 years. Normally the axle is replaced every 5 years.
In 1910 John Dethridge, a Victorian water supply engineer, developed the Dethridge wheel. Since then the wheels have been used extensively in the irrigation areas of NSW and Victoria. They are gradually being replaced by electronic meters but they are still the most efficient meters to use if waterways are weedy.

This wheel was used on a horticultural farm near Griffith, NSW. Murrumbidgee Irrigation Ltd replaced the wheel with an electronic water meter on the farm.

 This text content licensed under CC BY-NC.

Description
Water meter, Dethridge wheel, steel, used by Murrumbidgee Irrigation Pty Ltd, Australia, 1990.

The wheel consists of a drum around an axle with 4 spokes originating from each end of the axle. Eight v-shaped vanes are fixed to the outside of the drum. Some of them are bent on the edges, as a result of use. Shaft on which wheel turns is broken at one end.

Made: Griffith, New South Wales; 1990

Made: Leeton, New South Wales; 1990

Designed: Dethridge, John;

Designed: 1910


Used: Murrumbidgee Irrigation Ltd; Griffith, New South Wales; 1990 - 1999
99/97/1
Production date
1990
Depth
610 mm
Diameter
1290 mm

 This text content licensed under CC BY-SA.
Acquisition credit line
Gift of Murrumbidgee Irrigation Pty Ltd
Subjects
+ Irrigation
+ Water supply
+ Agriculture
Short persistent URL
Concise link back to this object: http://from.ph/167968
Cite this object in Wikipedia
Copy and paste this wiki-markup:

{{cite web |url=http://from.ph/167968 |title=Dethridge wheel, irrigation water meter |author=Powerhouse Museum |accessdate=25 April 2014 |publisher=Powerhouse Museum, Australia}}


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