Alberta Flood Hazard Maps and Hydraulic Modeling Reports

Flood studies include detailed engineering reports and flood maps for different sized flood events. The Government of Alberta produces these resources, which are updated when new information becomes available, with a last recorded update in March 2026. Maps delineate floodway, flood fringe, and inundation zones for design floods including the 1:100, 1:200, and 1:500 year events.

Use Cases

• Delineating floodway and flood fringe boundaries for the 1:100 design flood to inform local land use zoning decisions.
• Identifying incremental risk areas for larger floods, such as the 1:200 and 1:500 year events, for infrastructure design and long-term planning.
• Mapping flood inundation extents and areas protected by flood berms for emergency response planning during spring runoff or rainstorms.
• Analyzing areas at risk from specific flood mechanisms like ice jams using community-specific flood hazard maps.
• Referencing technical hydraulic and hydrologic model assumptions and results documented in the accompanying engineering reports for model validation.

Strengths

• Includes flood maps for multiple design flood sizes (e.g., 1:100, 1:200, 1:500 year events).
• Maps differentiate between specific hazard zones like floodway, flood fringe, high hazard flood fringe, and protected flood fringe.
• Supported by detailed technical engineering reports documenting model data and assumptions.

Limitations

• Specific spatial coverage (number of communities) and temporal range for the underlying data are not provided.
• The dataset is updated asynchronously, leading to potential discrepancies if the most recent version is not verified before use.
• Row counts, feature counts, and precise file sizes for the GIS data are unknown.

Provenance

Source

Government of Alberta

Collection Method

Combines hydraulic model results with high-accuracy ground information.

Freshness

Updated when new information is available; last platform update was March 2026.

Geography

Alberta, Canada