Annual Report of the Chief of Engineers
on Civil Works Activities
Fiscal Year 1982
Department of the Army Corps of Engineers
Extract Report of Walla Walla District

Zintel Canyon Dam, Idaho

Location. In Zintel Canyon, 2.1 miles southwest of Kennewick, Washington, in Section 16, Township 8, North, Range 29 East, Willamette Meridian.

Existing project. The proposed project consists of a roller-compacted concrete dam 102 feet high with uncontrolled spillway and a fixed maximum release outlet works that would create a detention reservoir of 2,500 acre-feet of capacity. The storage comprises 2,100 acre-feet for flood control and 400 acre-feet for sediment. In addition, the project also includes a channel with a capacity of 400 cfs. The plan of improvement would provide protection against heavy rainfall, snowmelt, and thunderstorm floods to the city of Kennewick, Washington.

Project adopted by resolution of House Committee on Public Works December 15, 1970, and by resolution of Senate Committee on Public Works December 17, 1970, under authority of Section 201 of Flood Control Act of 1965 (P.L. 298, 89th Cong.). The final Environmental Impact Statement was filed with the Council on Environmental Quality January 8, 1975. Estimated Federal cost (October 1982) is $8,350,000 and non-Federal cost is $1,130,000.

Local cooperation. The city of Kennewick, Washington, has provided a new letter of intent dated February 17, 1982, to sponsor the project.

Operations during fiscal year. Study update was initiated for reevaluation project feasibility.