Hanson’s award-winning geotechnical staff has designed, rehabilitated, and inspected numerous earth, rockfill and concrete dams nationwide and in several foreign countries.

Hanson is internationally recognized for its dam and levee expertise, and has been providing dam-related engineering services to the government and industry for over 50 years. We provide the following types of engineering services on flood control projects, which include hydroelectric dams:

• Geotechnical
• Structural
• Hydraulic

Our hydroelectric dam experience includes the following dams for the National Institute for Hydraulic Research in Santo Domingo, Dominican Republic:

• Rincon Dam
• Hatillo Dam
• Moncion Dam
• Sabaneta Dam

With many years of experience, Hanson is your choice for dams and levees. Hanson’s experience with the Illinois Department of Natural Resources, Office of Water Resources, their processes, procedures and requirements, involves more than 100 projects over the years. With a 20 year relationship with the U.S. Army Corps of Engineers (COE), Hanson has completed 108 hydraulic/hydrologic studies for small earth dams in Illinois and Missouri for the Chicago and St. Louis Districts COE. Hanson has also performed hydraulic engineering, inspections and evaluations for 46 levees along different major rivers in Illinois for the COE Rock Island District.

We have provided investigative and design services for existing dams, levees and impoundment structures throughout Illinois.

For new dams, Hanson has completed area reconnaissance studies to determine the most favorable location for a proposed dam based on geologic, subsurface and hydrologic/hydraulic information. After the most favorable location has been selected, more detailed investigations are completed to finalize all design features and to prepare plans and specifications.

For existing dams, Hanson has been retained to investigate and develop recommendations for the repair of geotechnical, hydraulic and structural problems. This has varied from seepage, piping and erosion and stability problems to hydraulic and structural deficiencies. At a number of projects, we developed plans and specifications for repair and supervised construction.