Flood Preparedness

home-alertCOVID-19: Things are evolving daily and the page below may not be current, get the latest updates on City facilities, services and programs at coquitlam.ca/covid19.

Note also that many services are available online to continue to serve the community at this time.

Flood Response Plan

Every year, Engineering & Public Works prepares for the possibility of flooding. Preparations include updating the flood plan, practicing repair and mitigation measures and training personnel.

The City of Coquitlam has an extensive flood response plan that includes:

  • Assessment of flood risk areas
  • Daily monitoring of river levels
  • Flood preparedness
  • Flood action plan
  • Evacuation planning
  • Flood risk assessment

The City of Coquitlam monitors both the Pitt River and Fraser River during times of potential flooding. An assessment of the flood protection measures that are already in place or can be added to reduce the impact of floods has been completed. This assessment includes a review of existing dikes and drainage systems, as well as a review of the properties and buildings that may be below the flood level.

Coquitlam’s flood action plan includes measures to respond to either a three- or four-metre flood level. Primary response measures include:

  • Stop logs to block Nelson Creek and Como Creek to prevent flooding north of United Boulevard. 
  • Temporary pumps installed in-stream to pump creek flows over the stop logs. 
  • Sand bagging in targeted areas to limit extent of flooding and protect critical infrastructure.
  • Possible road closures.

Daily Monitoring During Increased Risk of Flooding

City staff will closely monitor reports from the Provincial Ministry of Forests, Lands and Natural Resource Operations - River Forecast Centre which provides updates on river levels and flood risks as well as reports on the snow packs across the province.

City of Coquitlam Flood Preparedness

In addition to assessing existing flood protection, the City of Coquitlam is prepared for possible flooding by having on hand items such as sandbags, temporary portable dams and pumps that can be used to redirect water flow.

City staff regularly clears culverts and inspects dikes to ensure there are no blockages that would prevent proper drainage.  Before the spring freshet, staff will inspect all dikes, critical intakes, outfalls, culverts, and catch basins to ensure they are functioning properly.

When a rain storm is forecast, during significant rain storms and after snow falls when the melt is occurring, staff will continually check the critical intakes, outfalls, culverts and catch basins to ensure they are clear.​

Evacuation Planning

In the event of a major earthquake or severe storm, some areas of Coquitlam could be subject to flooding risk and may require evacuation.

In the highly unlikely event that an extreme earthquake causes failure of the Coquitlam Dam, water from behind the dam would flow into City of Coquitlam and residents in the lower areas along the Coquitlam River would be required to evacuate. Please consult the Coquitlam Dam Emergency Inundation Zone and Road Network Map to become familiar with the road network in your area and route to high ground outside the inundation zone.

It is important to note that in 2008 the Coquitlam Dam received significant upgrades and only under an extremely severe earthquake or similar catastrophic event would a dam breach occur. Please refer to the BC Hydro website for more information on dam safety, including the BC Hydro Coquitlam Dam Emergency Flood Map.

Flood Preparedness Questions & Answers


The City of Coquitlam is committed to protecting the city and residents and monitors status reports of the snow pack, river levels and the potential for flooding along the Pitt and Fraser Rivers. A Flood Response Plan has been prepared and includes both flood preparedness work and how the City will respond if river levels reach a stage where flooding occurs.

Businesses will be impacted the most in the case of a potential flood. Businesses are encouraged to conduct Business Continuity Planning. 

Expand all

  • Questions & Answers

Engineering & Public Works Customer Service

Engineering Emergency Services for Water, Sewer and Roads

24 Hours a Day, 7 Days a Week

Phone: 604-927-3500
Email: epw@coquitlam.ca