The draft study area map shows the following layers or features:

• Flooding Hazard – depicts the current flooding hazard for the 1937 Flood Event Standard (1:250-year return period flood).
• Flooding Hazard Updates – identifies the draft flooding hazard for the 1937 Flood Event Standard (1:250-year return period flood), based on new information or analysis (e.g., elevation data, field surveys, etc.).
  • Flooding Hazard Limit - layer includes Flood Plain, High Ground - NO DRY ACCESS, and Other Buildings - Flood Hazard.
  • Flood Plain - depicts low-lying lands adjacent to a river, stream or small inland lake that have been or may be subject to flooding during a flood event (1:250-year return period flood). The regulated area allowance is calculated from the outer limit of this line.
  • Flooding Hazard - Allowance - In areas where an engineered floodplain analysis is not available, the associated flooding hazard limit is estimated based on watercourse drainage area.
  • High Ground - NO DRY ACCESS - depicts areas of high-ground (i.e., areas above the flood elevation) that would be surrounded by flood waters during the 1:250-year return period flood with no dry access to the property.
  • Other Buildings - Flood Hazard - depicts buildings that intersect the floodplain and are included in the flood hazard limit and regulated area. More site-specific information is needed to determine flood hazard impacts on these structures.
• River or Stream Valley – depicts the current river or stream valley.
• River or Stream Valley Updates – identifies the draft river or stream valley based on new information or analysis (e.g., updated air photos, elevation data, etc.) to determine the projected stable top of slope.
• Wetlands – depicts the most current wetland layer.
• Regulated Area – represents the greatest extent of the combined current hazards or features plus an allowance as required in Ontario Regulation 41/24.
• Draft Regulated Area – represents the greatest extent of the combined draft hazards or features plus the required allowance. There may be areas where the regulated area has expanded or reduced due to new information or analysis.

Note: Differences between the current and draft map layers reflect enhanced data quality, as the updated layers are based on more accurate and detailed information than before.