Mica Station

Revelstoke, BC

BC Hydro’s Mica Dam is the first dam on the Columbia River and one of the largest earthfill dams in the world. Originally constructed in 1973 with four generating units, BC Hydro installed two additional 500 megawatt generating units to meet increased capacity.


BC Hydro


8 Months


Environmental, Major Projects,

Flow Rate



Heavy Metals, Hydrocarbons

Discharge Point

Plant Drainage System to Columbia River; Ground


Stormtec was contracted to assist BC Hydro with site water management throughout construction. The water treatment system required an oil-separator and sediment knock-out chamber in order to meet BC Water Quality Guidelines. Working in a protected freshwater environment on a high-profile project required high attention to detail with no room for error.


  • Treating water to meet BC Water Quality Guidelines for the Protection of Freshwater Aquatic Life.
  • Upgrading the system with additional adsorption and ion exchange units due to high fluctuations in construction water quality.
  • Discharged the treated water to the ground rather than into the plant-drainage system, reducing the cost of the monitoring program.