Cutoff

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Cutoff wall construction along the American River

"Various methods of seepage and percolation control can be used, depending on the requirements for preventing uneconomical loss of water and the nature of the foundation in regard to stability from seepage forces. Cutoff trenches, sheet piling, mixed=-in-place concrete pile curtains, slurry trenches, grouting of alluvium, or combinations of these methods have been used to reduce the flow and to control seepage forces. Blankets of impervious material, extending upstream from the toe of the dam and possibly covering all or part of the abutments, are frequently used for the same purpose."

Best Practices Resources

Design of Small Dams (USBR, 1987)

Trainings

On-Demand Webinar: Foundation Cutoff Walls for Dams and Levees

On-Demand Webinar: Seepage Rehabilitation for Embankment Dams

On-Demand Webinar: Specialty Construction Techniques for Foundation Improvement and Seepage Reduction

On-Demand Webinar: 3-D Effects on Estimation of Gradients, Seepage Flows and Evaluation of Internal Erosion Potential Failure Modes

Citations:

Revision ID: 4102
Revision Date: 11/03/2022