Archive

Byllesby Dam Spillway Modifications

Ayres provided final design and construction observation for the addition of 80% more spillway capacity to the Byllesby Dam. This high hazard Federal Energy Regulatory Commission (FERC) dam in southeastern Minnesota needed a new spillway with two 65-by-14-foot spillway gates, a new post-tensioned anchor wall, 330 feet of new foundation cutoff walls into bedrock, excavation… Read More »

Flambeau Hydro Station CSIR

Dairyland Power Cooperative retained Ayres to complete a Consultant’s Safety Inspection Report (CSIR) for the Flambeau Hydro Station in Ladysmith, Wisconsin. The project involved completing an inspection, analysis, and report. Ayres completed all duties required of an independent consultant under Federal Energy Regulatory Commission (FERC) guidelines. This 81-foot-tall high-hazard dam impounds 1,745 acres. The dam… Read More »

Eau Pleine Dam Stabilization

Portions of the Eau Pleine Dam were constructed in the 1930s, and after decades of service, the dam no longer met Federal Energy Regulatory Commission minimum safety standards. The dam, owned and operated by the Wisconsin Valley Improvement Company, forms the Eau Pleine Reservoir on the Eau Pleine River.Ayres worked with the company to improve… Read More »