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Show Stillwater Reservoir. There are no roads or trails along the feeder pipeline route. However, a dirt road along Rock Creek lies 1/ 4 mile east of and roughly parallel to the feeder route. A Forest Service access road up the South Fork of Rock Creek crosses the feeder route. Use of the pipeline alinement as a trail after construction is being considered by the Forest Service. Construction materials would be available at the same source outlined for Upper Stillwater Dam. Flow would be measured in a meter structure downstream from the intake. Physical data on Docs Feeder Pipeline and other feeder pipelines are given in Table A- 4. Stillwater Tunnel The 8.1- mile- long Stillwater Tunnel would be the upper tunnel of the Strawberry Aqueduct system. Heading at Upper Stillwater Reservoir, it would pass through the drainage divide separating Rock Creek from the North Fork of the Duchesne River. The tunnel would be within Ashley National Forest boundaries, under land used for multiple purposes. Construction of approximately 2.6 miles of new road was completed in October 1971, providing access to the outlet portal from an existing Forest Service road located on the northeast side of Duchesne River. An electric powerline to serve the inlet portal of the tunnel would be constructed as described above in the discussion of Upper Stillwater Reservoir. Moon Lake Electric Association would provide power to the outlet portal. An existing single- phase 12.5 kv transmission line passes near the outlet portal site. This is being converted to a 3- phase, 24.9 kv line. The Bureau of Reclamation is planning to conduct a $ 5 million research program in conjunction with construction of Stillwater Tunnel. Principal objectives for the proposed research program would be ( 1) to refine equipment and procedures for excavating, supporting, and lining the tunnel and for removing and disposing of the excavated material and ( 2) to develop more effective investigative methods. Enhancement of the environment, including erosion control, revegetation at high altitudes, and contouring of waste and borrow areas, would also be investigated. While the planned research would help Reclamation in future water tunnel design and construction, the findings could be applied to tunneling for various purposes that would benefit not only Reclamation and other Government 45 |