Tule River Success Lake Spillway Enlargement Phase 2

As the prime contractor, Michels constructed a 10-foot-high, 350-foot-long curved reinforced concrete weir with side walls and a downstream apron as part of the Tule River Spillway Enlargement Project in Porterville, CA. We also widened the spillway an additional 165 feet. Our scope also included trench drains at the main dam left abutments, floodproofing of recreation facilities, and relocation of existing wells and storage tanks.

We performed setup and operation of an on-site batch plant to supply concrete and placement of approximately 20,000 cubic yards of mass structural concrete, 900 rock anchors for concrete anchoring and rock reinforcement, and 80,000 tons of riprap and bedding material placement. Roughly 70,000 cubic yards of drill and blast excavation was accomplished to widen the spillway and excavate the ogee weir and apron foundation.

The work increased the gross pool elevation of the reservoir by 10 feet.