Hyrum Dam Upper Outlet Works Improvement Project

The purpose of this project is to update the outlet works at Hyrum Dam, approximately 10 miles south of Logan, Utah in Cache County. The principle components of the work are as follows:

remove the existing 24-inch outlet works pipe, remove the concrete saddles in the outlet works tunnel that supports the 24-inch pipe, remove the existing steel 36-inch by 24-inch wye on the left outlet works pipe, provide 36-inch butterfly valves one on the existing 36-inch penstock and one on the new 36-inch outlet works pipe, provide a flow measurement device, provide dismantling joints one on the existing 36-inch penstock and one on the new 36-inch outlet works pipe, and construct a concrete energy dissipation structure.