We were contracted to replace flashboards and perform apron scour repairs at a hydroelectric dam along the Rock River in the Upper Midwest. Our client is a privately owned entity that owns and operates 80+ hydroelectric facilities throughout the United States.

The project’s significant goals involved increasing the dam’s retainage capacity, protecting the existing spillway structure, and providing an aesthetically pleasing spillway for the community's residents. This project was scheduled for the summer months when flow rates are at their lowest, mainly due to the volatility of the Rock River and the need for a slow-moving current to keep our divers safe. 

This year, Nelosca's blog posts garnered an impressive readership of over 27,000. An analysis of our most searched topics identified the most significant issues in the environmental and marine construction industries, including those most relevant to our company's operations. This leads us to the question: What were our industry's most frequently researched topics?

We've examined Nelosca's most popular articles of the year -- let's count them down!

Sandy Lake Dam is owned by the United States Army Corps of Engineers (USACE), St. Paul District. The USACE identified that the original concrete structure needed repairs and improvements to address immediate safety concerns. Because the dam structure was more than 100 years old, the USACE used this as an opportunity to have Nelosca rehabilitate the dam and update many of its operational features.

Our new video shows you how we did it! 

Nelosca Technologies, Inc. (Nelosca) announces the promotion of Christopher Rousseau, P.E., F. ASCE to Hydro and Renewable Energy Market Leader. Rousseau’s promotion is announced concurrently with Nelosca’s strategic objective to further invest in renewable energy development.

Rousseau will use decades of experience in hydroelectric generation working for Midwest-based utility, Minnesota Power, to support the repair and rehabilitation needs of Nelosca’s hydro dam clients. Catering to a huge need for early contractor involvement; Rousseau is bridging the gap between hydroelectric dam owners, engineers, and the contractor teams that perform inspections, maintenance, and rehabilitation work.

80 years old and 35 years since its last rehab, LaGrange Lock and Dam in Versailles, IL was in major need of rehabilitation. Nelosca partnered with prime contractor Shimmick Construction (Shimmick) and the U.S. Army Corps of Engineers (USACE) Rock Island District, along with hundreds of crew members, to execute quality repairs through the existing lock.

102 years of lateral earth pressure and deterioration at Pisgah Dam caused its existing spillway wall to lean. Partnering with private dam owner Otter Tail Power Company, Nelosca ensured their hydropower dam received necessary repairs. The project included concrete demolition and the replacement of the dam's north spillway wall over two years.

Nelosca blog posts were viewed 13,622 times in 2019. Reviewing our most-searched blog topics helps us construct a list of the marine industry's most critical topics and those most pertinent to our company. So, what were the most-searched topics?

Working around water poses a plethora of challenges. There are always two parts of a water-based project, the above and below water sections. Access to the above water section is easy, however when working below the waterline access is not that easy. One of the more apparent issues is what do you do when the water is in the way of your work? One solution is to build a cofferdam.