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Show The beginning of the line is about 11.5 miles northwesterly from Hanna. The site is reached by graded Utah Highway 35 and a Forest Service graded access road along the West Fork. Part of the Forest Service access road is near to and parallels the West Fork Pipeline to its terminus at Vat Tunnel. About 9 miles of Forest Service road from Highway 35 near the junction of Wolf Creek and the West Fork of the Duchesne River to Vat Diversion Dam would be improved. ( 12) Vat Diversion Structure and Feeder Pipeline Vat Diversion Structure would divert flows of the West Fork of the Duchesne River into Strawberry Aqueduct. The potential damsite is located about 7 miles west of the confluence of the West Fork and Wolf Creek. It would be reached by an improved mountain road which leaves Utah Highway 35 at the mouth of Wolf Creek. The road may require improvement for construction purposes. Electric power would be obtained by extending a line about 3/ 4 mile to the proposed line at the inlet portal of Vat Tunnel. The diversion dam would consist of a 50- foot- long overflow weir on the right abutment, an earth dam, a headworks for two intake pipes, and a box- type sluiceway that would also be used for a river outlet. Flows through the headworks would be controlled by two 84- inch slide gates. Vat Feeder Pipeline would extend from Vat Diversion Dam to Strawberry Aqueduct, joining at a point on the West Fork Pipeline near the inlet portal of Vat Tunnel. Meters would measure the flow diverted into the feeder pipeline. ( 13) Vat Tunnel The 7.4- mile- long Vat Tunnel would carry water from the West Fork of the Duchesne River through Red Creek Mountain to Currant Creek Reservoir. The inlet portal site is reached by the Forest Service road along West Fork, which would be improved for about 8 miles west from its junction with Utah Highway 35„ The portal would be about 10 miles west of the confluence of the West Fork and the North Fork of the Duchesne River. Access to the inlet portal would require construction of a stream crossing on the West Fork of the Duchesne River. In addition, some widening, surfacing, and cross- drainage improvement of the West Fork of the Duchesne River Forest Service road on about the present alinement would be required. 51 |