Weber Siphon Project
After securing a new source of water from the Lake Roosevelt Storage Releases Project, OCR faced a new challenge: There was no way to deliver it to the southern part of the Columbia Basin. Interstate 90 was the problem. There was only one point, the Weber Siphon Complex, where water from the Columbia Basin Project passed under I-90, and it wasn’t large enough to handle the additional flow. A second siphon would be required.
The U.S. Bureau of Reclamation (Reclamation) had piping in place under I-90 at the Weber Siphon Complex. It just needed to be connected with the rest of the system. OCR contributed $800,000 for the design and worked with Reclamation and Washington’s congressional delegation to get stimulus funding for construction.
As part of the Lake Roosevelt Storage Releases Project, OCR will deliver at least 21,000 ac-ft of Lake Roosevelt water through Weber Siphon once it is finished. The siphon has the capacity to deliver much more water when new water supplies are developed
By the Numbers
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