Central Utah Water Conservancy District,
Duchesne River Canal Rehabilitation Project
- 145,200 feet of 18-inch to 96-inch pipeline.
- Seven miles of lined canals carrying flows of 100 cu ft/sec to 300 cu ft/sec.
- Extensive coordination with multiple agencies, design firms, and the public.
- Significant right-of-way and permitting issues.
- Beneficial results, including a 20-percent annual water savings.
Carollo, in joint venture, provided planning, design, and construction management for more than 35 miles of irrigation pipeline and canals for the Central Utah Water Conservancy District (CUWCD) Duchesne River Canal Project in Utah’s Uinta Basin. The project included 27.5 miles of pipeline ranging from 18 to 96 inches in diameter, 7 miles of lined canals carrying flows of 100 cu ft/sec to 300 cu ft/sec, 26 inlet/ outlet gated structures, four spillway/waste structures, over 13,000 feet of 96-inch-diameter inverted siphon piping, 47 cross drainage culverts, 33 air release structures, two pressure control structures, five Parshall flume flow metering structures, and over 1,650 metered turnouts to end users.
This project involved the coordination of two joint venture engineering firms and two subconsultants, as well as a close working relationship with CUWCD, the U.S. Bureau of Reclamation, various governmental agencies, and the public.
One of the major challenges on the project was to obtain right-of-way for the pipelines and canals prior to award of the project contract packages. Other tasks during final design included permit applications from the U.S. Forest Service, the Utah State Department of Highways, and the City of Duchesne, as well as meeting the requirements of the U.S. Bureau of Reclamation. The U.S. Bureau of Reclamation provided design review services, gave final approval of the plans and specifications, attended meetings, and directed funding.
The 96-inch pipeline designed for this project is known as the Taylor Pipeline. Carollo designed this 2.5-mile portion of the project to carry flows of 250 cu ft/sec, with a working pressure up to 55 psi.
The $32.5 million project has resulted in annual water savings approaching 14,000 acre feet per year; nearly a 20-percent annual water savings.