Flood Susceptibility Maps for Canada from 2000 to 2023

Natural Resources Canada provides a national map series showing calibrated probabilities of flood susceptibility. The collection includes yearly maps from 2000 to 2023, future climate scenarios, and processed decision-ready maps. The system integrates land characteristics and seasonal weather variables, using an XGBoost algorithm selected for its accuracy.

Use Cases

• Assessing year-to-year variations in flood risk based on annual calibrated probability maps.
• Identifying long-term trends in flood susceptibility using processed trend maps.
• Analyzing extreme wet and dry years based on calculated watershed scores.
• Examining potential future flood susceptibility under different climate scenarios.

Strengths

• Covers a 24-year time range from 2000 to 2023.
• Incorporates a wide range of input data including elevation, soil type, land cover, rainfall, and temperature.
• Model was calibrated to better align probabilities with real-world conditions, with noted improvements in moderate susceptibility areas.

Limitations

• Description metadata is limited; actual data quality requires manual inspection after download.
• Column-level documentation is absent; field semantics must be inferred after download.

Provenance

Source

Natural Resources Canada

Collection Method

Modeled using an XGBoost algorithm trained on a set of known flood locations and incorporating land and weather variables.

Time Range

2000 to 2023, with future scenarios

Freshness

Last updated 2026-05-25 15:30:53.417221; freshness should be verified.

Geography

Canada