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Environment held the authority to vary flood construction levels, but the Flood Hazard Protection Statues Amendment Act repealed this involvement, and flood levels are now a local matter.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

A public information session is planned to be held late February/Early March 2020. More information will be posted when available.

Pop-up info booth

December 3, 2019 and December 4, 2019
Spirit Centre

View the info boards

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