• Earthen Dams

    Earthen Dams

    The project consisted of additional analysis of the dikes/dam embankments to comply with new regulatory requirements. ESP collected in-place soil samples and soil data within existing embankments and evaluated the embankment slope stability and evaluated the seismic stability/liquefaction potential of the intermediate dam that divides the two ponds.

  • Dam Breach and Inundation Mapping

    Dam Breach and Inundation Mapping

    ESP supported various tasks in support of Emergency Action Plan development for significant and high hazard dams. Tasks included field reconnaissance, embankment and bathymetric survey, hydrologic spillway analysis, dam breach analysis, downstream hydraulic analysis, inundation mapping, EAP component development, and reporting.

  • R.O.V. Dam Inspections

    R.O.V. Dam Inspections

    ESP provides planning, observation, and reporting for the underwater inspection of the spillway systems using a Remotely Operated Vehicle (R.O.V.) equipped with scanning sonar and video. For limited underwater visibility, the inspections rely on 2D sonar for imaging the various spillway components, including trash racks, gates, debris buildup, and spillway baffles.

  • Dam Safety

    Dam Safety

    ESP provides required dam safety inspection, including of review of as-built drawings, visual observations of the dam, review of diver observations made the day of the inspection, and preparation of a dam inspection report to the owner.

  • Dam Maintenance

    Dam Maintenance

    ESP provides surveying, geophysics, geotechnical engineering, civil engineering, water resource engineering, and inspections and testing services for earthen dam projects, including location of existing site features, repairs to the earthen embankment, rehabilitation of an existing service roads, and installation of controlled runoff drainage system.

  • Pumped Storage Hydroelectric Plant

    Pumped Storage Hydroelectric Plant

    ESP provided consulting services for a pumped storage plant hydroelectric facility on an 842-acre man-made reservoir. We performed observation and reporting on the annual hydrographic surveys, dive inspections of the clay liner, planning and observation of underwater repairs, and review of rehabilitation design for the interior access ramp.

Dam Consulting

ESP takes a practical approach to dam engineering and consulting. We apply appropriate engineering principles to design and rehabilitation, while addressing regulatory requirements and being mindful of our client’s goals, objectives and financial constraints. Our engineers, geologists, geophysicists, and surveyors have abundant experience providing professional services for new and existing dams. Our personnel’s dam experience range from rehabilitation of low hazard earth dams, to assessing slope stability and seismic stability of ash pond embankments, to consulting on large hydroelectric dams.

H&H Modeling and Inundation Mapping

Third party development around dams and aging infrastructure combined with advances in methodologies and safety regulations are pressing issues. ESP staff have significant experience in hydrologic and hydraulic modeling and inundation mapping in support of dam projects. Our professionals understand dam safety regulations that dam owners must adhere to and know how to work with clients to meet these requirements. 

Services for Dams:

  • H&H Modeling for Hazard Classification
  • Incremental Damage Assessments
  • Dam Failure Analysis
  • Emergency Action Plans (EAP)
  • Community Outreach
  • Hazard Planning