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Federal Energy Regulatory Commission

Industries Hydropower Dam Safety and Inspections RIDM - Regulations, Guidelines and Manuals

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Risk Informed Decision Making (RIDM)

    About Risk Informed Decision Making (RIDM)

      Risk Informed Decision-Making (RIDM) is a method of dam safety evaluation that uses the likelihood of loading, dam fragility, and consequences of failure to estimate risk. This risk estimate is used along with standards- based analyses to decide if dam safety investments are justified or warranted. This approach has many benefits including a greatly improved understanding of the safety of the dam and identifying dam safety vulnerabilities that have not been identified using standards-based evaluation techniques.

      The Commission’s 2014-2018 Strategic Plan PDF Objective 2.2 is to minimize risk to the public and Strategy 1 of this objective is to use risk-informed decision making to evaluate dam safety. These efforts are to complement the traditional dam safety approach and together will improve public safety.

    RIDM Workshops and Training

      Future RIDM workshops and training are being planned. We are planning a 90-minute web-based training to provide to licensees and consultants an overview of the new RIDM Risk Guidelines.

      Additional RIDM workshops and training include:
      • Risk Overview
      • Level 2 Risk Analyses
      • Additional Technical Workshops

      Please check back to this website for updates to upcoming risk training | Past Workshops and Training

    Other New RIDM Documents

    • » Comment Disposition Summary Table PDF - A table that presents the external reviewers of the initial draft of the RIDM policy documents. The table includes the review comment, disposition, and comment resolution.

    RIDM Pilot Projects

      Pilot projects to trial the new RIDM Risk Guidelines are now underway and additional projects are being solicited. The following link provides more information about proposals to conduct risk pilot studies