Archive

Canal Importation Ponds

The largest stormwater project undertaken by the City of Fort Collins since the 1997 flood involved design and construction of $20 million of stormwater improvements in the heart of the City directly upstream of Colorado State University. The project included extensive public outreach, including mailings, open houses, and a project website to educate the public.… Read More »

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 »

East Side Detention Facility

The East Side Detention Facility (ESDF) dam is a high-hazard dam in northern Colorado. As the on-call engineering consultant for the Boxelder Stormwater Authority, Ayres was retained to analyze the Gray Lakes Reservoir area as a possible location for the ESDF as part of the Boxelder Basin Regional Stormwater Master Plan. This major regional flood… Read More »