Global Water
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On Global Resources
Winter 2010-11 | Volume 30, Number 2 | Download PDF
Global Water
![Soap Lake siphon in the Columbia Basin irrigation system in Washington State, taken near the end of the 2.44 mile-long
concrete bore, c. 1942. Boasting an inside diameter of 25 feet, the siphon carries the entire flow of the West Canal from the east side of the Grand Coulee around the northern end of Soap Lake to the west side of the Grand Coulee. University of Washington Libraries, Special Collections, UW 8237.](https://www.crl.edu/sites/default/files/d6/images/focus/water.png)
Soap Lake siphon in the Columbia Basin irrigation system in Washington State, taken near the end of the 2.44 mile-long
concrete bore, c. 1942. Boasting an inside diameter of 25 feet, the siphon carries the entire flow of the West Canal from the east side of the Grand Coulee around the northern end of Soap Lake to the west side of the Grand Coulee. University of Washington Libraries, Special Collections, UW 8237.