Earth & Rockfill Dams

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Barney (Eldon Mills) Dam Raise ACEC Oregon Grand Award

Cornforth Consultants offers a broad range of technical services for earth and rockfill dams. Our geotechnical/geology team has considerable experience on dam design and construction. Cornforth also acts as lead consultant for multidisciplinary teams to provide the skills needed for a complete dam design or safety inspection. Several of our engineers are recognized as Independent Consultants by the Federal Energy Regulatory Commission (FERC).
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Listed below are representative earth and rockfill dam projects and services offered for clients such the US Army Corps of Engineers, Portland General Electric, City of Portland Water Bureau, PacifiCorp Energy, as well as private dam owners.

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Representative Projects:

• Barney Dam Raise
• Bull Run No. 2 Seismic Stability Analysis
• McGuire Dam Raise
• ​Iron Gate Dam Crest Raise

• Scoggins Dam Studies
• ​Frog Lake Dam Reconstruction​
• Oahe Dam Stability Analyses
• Bonneville Cofferdam

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Services Offered for Earth and Rockfill Dams:

• Site Reconnaissance
• Dam Siting Studies
• Seismicity
• Geologic Hazards
• FERC Part 12 Dam Safety Inspections
• Borrow Sources
• Hydrogeology
• Decommissioning
• Field Explorations
• Laboratory Testing

• Embankment Design
• Earthquake Engineering
• Dam Raises and Modifications
• Cofferdam Design
• Tunnels and Pipelines
• Cutoff Trenches
• Spillway Design and Inspection
• Plans and Specifications
• River Diversion
• Instrumentation