Rehabilitation

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There are currently over 90,000 dams in the United States National Inventory of Dams (NID), with 76% of these having a High Hazard Potential classification and and average age of 60 years. As a result of the high consequences that accompany the failure of any High Hazard Potential dam, the rehabilitation of these aging structures becomes increasingly necessary.

The planning and rehabilitation design of an existing dam requires many different tasks involving a variety of disciplines. Common tasks include but are not limited to:

• Legal Agreements
• Permitting
• Public Outreach
• Hazard Potential Classification (including consideration of hazard creep)
• Water Demand / Population Studies
• Benefit-Cost Analyses
• Hydrologic Studies
• Environmental Impact Studies
• Geologic and Geotechnical Investigations
• Seismic Investigations
• Structural / Embankment Design
• Hydraulic Design
• Risk Communication
• Construction Management

Best Practices Resources

TR-210-60 Earth Dams and Reservoirs, NRCS, 2019

Design Standards No. 13: Embankment Dams (Ch. 1: General Design Standards), USBR, 2011

Federal Guidelines for Dam Safety, FEMA, 2004

General Design and Construction Considerations for Earth and Rockfill Dams (EM 1110-2-2300), USACE, 2004

Trainings

Dam Owner Academy: Rehabilitation Projects

On-Demand Webinar: Field Investigations for New and Existing Dams

On-Demand Webinar: Rehabilitation of NRCS Watershed Structures – A Consultant’s Perspective

On-Demand Webinar: Seepage Rehabilitation for Embankment Dams

On-Demand Webinar: Rehabilitation of Concrete Dams

On-Demand Webinar: Concrete Repair and Maintenance for Dams

On-Demand Webinar: Low-Level Conduits – What Can Go Wrong, How to Inspect, How to Repair?

On-Demand Webinar: Why Embankments Crack and How to Fix Them

Citations:

Revision ID: 5177
Revision Date: 12/12/2022