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iMap updated: April 8, 2026<\/SPAN><\/P>

This layer represents mapped alluvial fan areas compiled from multiple sources:<\/SPAN><\/P>

  • Oyster River alluvial fan derived from Kerr Wood Leidal (2021) Coastal Flood Mapping Project (Technical Memorandum #2 \u2013 Fluvial and Coastal Geomorphology)<\/SPAN><\/P><\/LI>

  • Additional alluvial fan features derived from the Province of BC Flood Hazard Mapping dataset (2004)<\/SPAN><\/P><\/LI><\/UL>

    Alluvial fans are geomorphic features formed by sediment deposition where watercourses exit confined valleys. These areas may be subject to flooding, sediment deposition, channel avulsion, and debris flow hazards.<\/SPAN><\/P>

    This layer supports identification of areas where further professional assessment may be required under Flood Hazard Area Bylaw No. 890.<\/SPAN><\/P><\/DIV><\/DIV><\/DIV>", "geometryType": "esriGeometryPolygon", "sourceSpatialReference": { "wkid": 26910, "latestWkid": 26910, "xyTolerance": 0.001, "zTolerance": 0.001, "mTolerance": 0.001, "falseX": -5120900, "falseY": -9998100, "xyUnits": 10000, "falseZ": 0, "zUnits": 1, "falseM": 0, "mUnits": 1 }, "copyrightText": "Kerr Wood Leidal Associates Ltd. 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