The Upper Diamond Fork Project was constructed for the Central Utah Water Conservancy District (CUWCD) as part of the completion of the Central Utah Project Completion Act (CUPCA). The Project is located in Utah County, Utah and conveys water approximately six miles from the Sixth Water Aqueduct to the Diamond Fork Pipeline located in Diamond Fork Canyon, approximately 7 miles from US Highway 6/89 in Spanish Fork Canyon.

Initially the Upper Diamond Fork Project incorporated both tunnel and pipeline segments connecting the Sixth Water Aqueduct with a to-be-built flow control structure in the Monks Hollow area. This proposal was reviewed by a Value Engineering team who determined that a single tunnel structure would cost less to build and would have a lower operation cost over the project life-cycle. This option, named "VE Design/Build Tunnel Option T3/T10", was presented to the contractors bidding the project.

Not only does the VE "Design/Build" T3/T10 tunnel option cost less to construct, it also will have less of an impact on the environment. This reduced impact is outlined in the Environmental Assessment document prepared by the Central Utah Water Conservancy District.

On January 4, 2002 the TBM mining process came to a halt when a segment of tunnel wall caved and H2S gas levels reach nearly 400ppm in the air (over 60ppm in the water). In the days following both the District and the Contractor agreed it was no longer safe to continue mining along the proposed alignment. The District developed a new plan to finish the system by incorporating parts of the original tunnel/pipeline concept and re-bid the remainder of the project as Phase II. Details on the concept and bidding summary can be found in the project library. (Bid related documents canbe found under the Miscellaneous Documents - 'Other' drop-down box, and Maps of the project can be found under the 'Map' drop-down box)
                                   

Hole-Thru Information

The Diamond Fork System was dedicated on July 1, 2004. Governor Olene S. Walker, Congressman Chris Cannon, and others contributed their remarks at the ceremony marking the completion of the project.