Report of the Secretary of the Army
on Civil Works Activities for Fiscal Year 1994
Department of the Army Corps of Engineers
Extract Report of the Walla Walla District

Zintel Canyon Dam, Washington

Existing project. The project consists of a 90-foot high, roller-compacted concrete detention dam with an uncontrolled spillway and a fixed release outlet works at the mouth of Zintel Canyon, a 78-inch buried conduit (400-cfs capacity), 4,165 feet in length through town, channel improvements, and a culvert under the Burlington Northern Railroad. A flood dike plug across the Union Pacific Railroad protects downtown Kennewick when major flood flows occur. The dam and associated works will provide 100-year protection at the damsite and approximately 50-year protection through the city. The average annual flood damage reduction benefits are $1,040,100.

The project was authorized by Public Law 298, 89th Congress-Section 201 of the Flood Control Act of 1965. The Project Cooperation Agreement (PCA) was approved by the Assistant Secretary of the Army (ASA) and was signed by the city of Kennewick in July 1991. Funds were appropriated for construction in Fiscal Year 1991. The project consisted of two parts: 1) channel, which was awarded in January 1992; and 2) dam, which was awarded in March 1992.

Local cooperation. Non-Federal sponsors, city of Kennewick, Washington, cost-shared 25 percent of the total project cost. Current estimated Federal and non-Federal project cost is $9,700,000. The estimated Federal cost is $7,275,000.

Operations during fiscal year. Both channel and dam contracts were completed. Fiscal year costs were $55,748. Total costs to September 1994 were $6,247,008.