QCI provided surveying, engineering design, and construction management services on a project to replace two existing diversion structures on Eagle Creek with fish passable rock weirs. Irrigation diversion rates at the two locations were 22 and 41 cubic feet per second, with river flows varying from a low of about 100 cubic feet per second to over 4,000 cubic feet per second. One of the sites had a maximum elevation drop of nearly six feet across the existing structure, which was accommodated with a number of grade control weirs to maintain the water surface elevations necessary to provide adequate water deliveries over a wide range of flow rates. This project also provided for approximately 1,400 linear feet of bank stabilization. QCI personnel also coordinated with the local water users and adjacent landowners to obtain their input with respect to irrigation operations and project access for construction.
1904 W. Overland Rd. Boise, Idaho 83705
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