Mining and Industry




Calder Engineering Ltd. has the experience, staff, and resources to provide a wide range of services to mining and industry. The services offered are listed below and are associated with development, operation, and closure. Specific expertise is provided in hydrology and water management, flow monitoring, and stream rehabilitation design including aquatic habitat enhancement.

Calibration of flow meters has become standard practice in industry to comply with permit conditions, and regulations such as the Ontario MISA Clean Water Regulations and Metal Mining Liquid Effluent Regulations (MMER). Calder Engineering Ltd. has the expertise to review and assess flow monitoring installations, and calibrate all types of flow meters. Testing is undertaken in conformance with regulatory guidelines, and related ISO, CSA and ASTM specifications. Our calibration methods include dilution testing using either Rhodamine WT or Lithium Chloride, gravimetric testing, and scale model studies. In addition to the above, Calder Engineering Ltd. has developed proprietary designs for streamflow monitoring stations, and provides design, fabrication, and installation services.

With respect to permitting and approvals, staff have experience with both coordinating and providing supporting technical documentation for Certificates of Approval for effluent discharges, Permits to Take Water, Fisheries Act Authorizations, work permits related to work in or adjacent to lakes, rivers, and streams, projects subject to the Canadian Environmental Assessment Act, and closure plans.

Services Offered:

  • Hydrology Studies
  • Receiving Water Studies
  • Water Management and Drainage System Design
  • Stream Rehabilitation Design
  • Stream and Lake Relocation Design in Support of Mine Expansion
  • Fish Passage Analysis and Design
  • Design of Pumping Systems and Pipelines
  • Sewage Disposal
  • Design, Installation, and Calibration of Flow Monitoring Installations
  • Flow Monitoring and Water Quality Sampling
  • Project Management & Coordination of Permitting and Approvals


flow calibration   waterResource
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