Dams

Regional water resources studies

  • Hydrological studies
  • Impacts of climate change
  • Systems analyses
  • Potential water use: water supply, hydropower, irrigation, regulation
  • Reserve determinations.

Dam and river intake selection

  • Desktop studies
  • Reconnaissance of suitable dam locations
  • Geomorphological investigations
  • Geotechnical investigations:
Foundations
Construction materials sources.

Dam feasibility studies

  • Flood and yield modelling and systems analyses
  • Investigation of alternative dam and spillway types
  • Comparisons with alternative sources, e.g. groundwater, desalination
  • Investigation of hydropower potential
  • Preliminary dam, intake and spillway design and cost estimates
  • Project financing and financial impact studies
  • Operational requirements and annual costs
  • Economic analyses to determine best option.

Dam detail design, tendering and construction management

  • River hydraulics and backwater modelling
  • Sedimentation and seismic studies
  • Environmental and social impact assessments
  • Dam embankment stability and seepage analyses
  • Spillway computational and hydraulic modelling
  • Intake, outlet and hydropower plant design
  • Ancillary works and structures design
  • Access roads and bridges design
  • Environmental and emergency water release systems
  • Preparation of bidding documents
  • Management of bidding and award processes
  • Construction monitoring
  • Management, operation and maintenance plans.

Dam rehabilitation

  • Dam safety inspections
  • Repair and maintenance
  • Dam embankment raising options
  • Spillway and outlet works refurbishment
  • Plant and equipment refurbishment
  • Environmental remediation
  • Revised management, operation and maintenance plans.

Dams

  • 200 m wide spillway under construction, Dikgatlhong Dam, Botswana. Click large picture to read article ...
  • Kirstenbosch Dam, Cape Town. Click large picture to read article ...
  • Dam raising and new spillway under construction, Nacala Dam, Mozambique. Click large picture to read article ...
  • Nzhelele dam spillway being investigated. Click large picture to read article ...