Floodplain Mapping

Quesnel is vulnerable to high water events in the Fraser and Quesnel Rivers, which can cause flooding due to backwater along Baker Creek. While extreme events of this sort might be seen as rare, they can and sometimes occur more frequently than expected.

The current floodplain area and levels were set in 1989 by the Ministry of Environment. Up to 2003, the Ministry of Environment held the authority to vary flood construction levels, but the Flood Hazard Protection Statues Amendment Act repealed this involvement, and flood levels are now a local matter.

This project will update land use management, flood protection works and emergency management planning.

This project is grant funded through the National Disaster Mitigation Program.

Urban Systems has been hired to lead this project.

Project Steps
Data Collection
  • Review previous work, historical photographs and flood mapping.
  • Obtain bathymetric survey information and use the City's LIDAR data to help understand the rivers and their floodplains.
200 Year flow Estimates
  • Identify historical flow events for Fraser River, Quesnel River and Baker Creek.
  • Project the 200 year return period peak flow rates.
  • Consider the impacts of climate change.
Computer Modeling
  • Complete hydraulic modelling of the river channels in the City.
  • Complete sensitivity analysis to help refine the analysis.
  • Prepare flood maps.
Flood Hazard Assessment
  • Develop an inventory of land, buildings, infrastructure and populations that may be at risk of flooding.
  • Complete qualitative evaluation of channel stability.
Flood Mitigation Planning
  • Recommend actions and investments to reduce the impacts of high water.
  • Prepare cost estimates
  • Engage stakeholders
Community Engagement
Public information session | March 9, 2020

March 9, 2020  |  6 pm - 8 pm
City Hall Council Chambers, 410 Kinchant Street

You’re invited to review updated floodplain mapping and the resulting impacts to the community due to high flood water events in the Fraser and Quesnel River. The existing floodplain mapping for the City of Quesnel was developed in 1992 and made use of peak flow data that was available at that time. An additional 25 years of data is available to update the peak flow estimates, and the impacts of climate change are also considerations. These factors are revealing different design flows than those calculated in the early nineties. Join us to review the background information and discuss the viable approaches to dealing with floodplain management issues in Quesnel. 

Stakeholder Meetings | March 9 - 10, 2020

The City is meeting with a variety of stakeholder groups (emergency services, environmental agencies, business and industry) as part of helping to support an understanding of the issues and plausible mitigative measures.

Pop-up info boards

December 3, 2019 and December 4, 2019
Spirit Centre

View the info boards

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