diamond fork system
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    • diamond fork pipeline project
  • project summary

    • project operations
  • environmental restoration
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    diamond fork pipeline project operations
    The transbasin diversion of the combined Bonneville Unit and SVP waters from Strawberry Reservoir would be primarily made through the Syar Tunnel and Sixth Water Aqueduct, supplemented by releases through the historic Strawberry Tunnel.


    The Diamond Fork System facilities will operate together as follows. As mentioned above, Syar Tunnel and Sixth Water Aqueduct will deliver Strawberry Reservoir water to the beginning of the Upper Diamond Fork Tunnel and Pipeline project, which will convey the transbasin diversion around the creeks of the upper Diamond Fork drainage. At the end of the Red Hollow Pipeline along Diamond Fork Creek, approximately one-half mile downstream from Monks Hollow, most of the water would enter the existing Diamond Fork Pipeline. The remainder of the water would be released to Diamond Fork Creek by means of a turnout to the creek constructed at that point. The water released to the creek wil be for creek flow maintenance and for irrigation water delivery when the demand for irrigation water exceeds the 560 cfs capacity of the Diamond Fork Pipeline.

    Strawberry Tunnel will be used primarily to release water for maintenance of minimum flows in Sixth Water Creek. In addition, irrigation water releases will be made during infrequent years when the summertime irrigation water demand from Strawberry Reservoir exceeds the flow capacity of Syar Tunnel. However, the limitation on use of Strawberry Tunnel will not apply in the event that emergency circumstances require the use of Strawberry Tunnel for delivery of contracted Bonneville Unit or SVP Water.

    The Bonneville Unit water deliveries form Strawberry Reservoir would average 163,400 acre-feet per year. By maknig some of this transbasin diversion through Strawberry Tunnel and by releasing water from the end of the Red Hollow Pipeline to Diamond Fork Creek, this amount would be divided between the Diamond Fork Pipeline (128,300 acre-feet) and Diamond Fork Creek (35,100 acre-feet).

    The releases from Strawberry Tunnel to Sixth Water Creek and from the Red Hollow Pipeline to lower Diamond Fork Creek would improve fish and riparian habitat along the creeks. Creek flows would be managed to promote specific environmental objectives in the creeks and their riparian zones.