Sea Level Rise Adaptation Program

Sea Level Rise and Climate Adaptation

To help communities adapt to our changing environment, the RDN has launched the Sea Level Rise and Climate Adaptation Program. This multi-year initiative is designed to use the latest approaches in science and engineering to better understand flood hazards and identify applicable flood mitigation options to reduce the risk of flooding. These resources will be used by engineers and the development industry to plan construction projects and to update development policies and bylaws to ensure a standard of public safety into the future.

River Flood Hazards

There are three major river systems in the region (Nanaimo River, Englishman River and Little Qualicum River) that are prone to flooding. Development in these areas is regulated through the Floodplain Management Bylaw No. 1469, and is based on flood hazard mapping produced by the province in the 1980s and 1990s. The current floodplain maps are outdated and will be replaced by the maps based on the most recent advances in hydrological modelling and fluvial assessment. Once completed, the new mapping information and risk assessment findings will be made publicly available through an update of the applicable bylaws, policies and plans.  

For more information visit the RDN’s Get Involved webpage and register to receive email notifications as this initiative progresses.

Coastal Flood Hazards

In January 2018, the Province of BC adopted an amendment to the Flood Hazard Area Land Use Management Guidelines that incorporated new building standards for coastal areas that consider relative sea level rise (RSLR) to 1.0 metre. These standards were integrated into the RDN's Floodplain Management Bylaw No. 1469 in December 2018.

To improve in the application of these standards, the RDN is updating coastal floodplain maps that show land susceptible to flooding from the sea. Supporting project documents are provided below and the coastal floodplain maps are anticipated to be publicly available in late 2021.

Coastal Floodplain Mapping Project


Other Resources