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Big Sandy Lake Dam Drone Shot for Blog

Dam Rehabilitation and Operational Updates to 100-Year-Old Structure

Posted by Kimberly Walters on August 09, 2023

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 Brennan rehabilitate the dam and update many of its operational features.

Our new video shows you how we did it! 

Performing Dam Rehabilitation and Operational Updates

The rehabilitation of Big Sandy Dam lasted 2 years. Working closely with the USACE, we installed a cofferdam and conducted dewatering, demolition, concrete placement, and sluice gate replacement. 

Our Work:

  • Cofferdam installation and dewatering
  • Demotion of the existing structure
  • Concrete placement
  • Sluice gate replacement

Watch more videos on our YouTube Channel: https://www.youtube.com/@BrennanCompanies 

The Sandy Lake Dam Rehabilitation project concluded with a final concrete placement on August 29, 2022, and site demobilization shortly after. Thank you to the entire crew, our project partners, and our suppliers for working with us on this project.

Big Sandy Dam Concrete Work

For more details on Brennan’s capabilities, please visit our Dam Construction page and connect with our team. More videos from Brennan are available here on our Video Resources page.


About J.F. Brennan Company
J.F. Brennan Company, Inc. (Brennan) is a fourth-generation, family-owned marine construction firm specializing in environmental remediationdam constructioncommercial diveharbor management, and submarine cable services. Working closely with public and private owners of water-based infrastructure since 1919, Brennan operates nationwide throughout coastal and inland waterways.

Topics: Dam Construction, Marine Construction, Dam Repairs, Between the Trees, Great Place to Work, careers, cofferdam, Dewatering, gate repairs, foundations

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