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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. (2021)\nProvince of British Columbia \u2013 Flood Hazard Mapping Program (2004)\nComox Valley Regional District (data compilation and maintenance)", "parentLayer": null, "subLayers": [], "minScale": 64000, "maxScale": 0, "referenceScale": 4000.0, "drawingInfo": { "renderer": { "type": "simple", "symbol": { "type": "esriSFS", "style": "esriSFSSolid", "color": [ 239, 118, 34, 255 ], "outline": { "type": "esriSLS", "style": "esriSLSSolid", "color": [ 239, 118, 34, 255 ], "width": 2 } }, "label": "Alluvial Fan" }, "scaleSymbols": true, "transparency": 35, "labelingInfo": null }, "defaultVisibility": true, "extent": { "xmin": 345926.1328999996, "ymin": 5479734.316299999, "xmax": 372633.67650000006, "ymax": 5527437.0407, "spatialReference": { "wkid": 26910, "latestWkid": 26910, "xyTolerance": 0.001, "zTolerance": 0.001, "mTolerance": 0.001, "falseX": -5120900, "falseY": -9998100, "xyUnits": 10000, "falseZ": -100000, "zUnits": 10000, "falseM": -100000, "mUnits": 10000 } }, "hasAttachments": false, "htmlPopupType": "esriServerHTMLPopupTypeAsHTMLText", "displayField": "FTR_NAME", "typeIdField": null, "subtypeFieldName": null, "subtypeField": null, "defaultSubtypeCode": null, "fields": [ { "name": "OBJECTID", "type": "esriFieldTypeOID", "alias": "OBJECTID", "domain": null }, { "name": "FTR_NAME", "type": "esriFieldTypeString", "alias": "Feature Name", "length": 100, "domain": null }, { "name": "FTR_TYPE", "type": "esriFieldTypeString", "alias": "Feature Type", "length": 16, "domain": null }, { "name": "Source_Org", "type": "esriFieldTypeString", "alias": "Source Organization", "length": 100, "domain": null }, { "name": "Source_Project", "type": "esriFieldTypeString", "alias": "Source Project", "length": 150, "domain": null }, { "name": "Source_Doc", "type": "esriFieldTypeString", "alias": "Source Document", "length": 150, "domain": null }, { "name": "Source_Date", "type": "esriFieldTypeDate", "alias": "Source Date", "length": 8, "domain": null }, { "name": "Mapping_Scale", "type": "esriFieldTypeString", "alias": "Mapping Scale", "length": 50, "domain": null }, { "name": "Notes", "type": "esriFieldTypeString", "alias": "Important Information", "length": 350, "domain": null }, { "name": "Shape", "type": "esriFieldTypeGeometry", "alias": "Shape", "domain": null } ], "geometryField": { "name": "Shape", "type": "esriFieldTypeGeometry", "alias": "Shape" }, "indexes": [ { "name": "R1836_pk", "fields": "OBJECTID", "isAscending": true, "isUnique": true, "description": "" }, { "name": "S1615_idx", "fields": "Shape", "isAscending": true, "isUnique": true, "description": "" } ], "subtypes": [], "relationships": [], "canModifyLayer": true, "canScaleSymbols": true, "hasLabels": false, "capabilities": "Map,Query,Data", "maxRecordCount": 2000, "supportsStatistics": true, "supportsAdvancedQueries": true, "supportedQueryFormats": "JSON, geoJSON, PBF", "isDataVersioned": false, "ownershipBasedAccessControlForFeatures": {"allowOthersToQuery": true}, "useStandardizedQueries": true, "advancedQueryCapabilities": { "useStandardizedQueries": true, "supportsStatistics": true, "supportsHavingClause": true, "supportsOrderBy": true, "supportsDistinct": true, "supportsCountDistinct": true, "supportsPagination": true, "supportsTrueCurve": true, "supportsQueryWithDatumTransformation": true, "supportsReturningQueryExtent": true, "supportsQueryWithDistance": true, "supportsSqlExpression": true }, "supportsDatumTransformation": true, "dateFieldsTimeReference": { "timeZone": "Pacific Standard Time", "respectsDaylightSaving": true }, "hasMetadata": true, "isDataArchived": false, "archivingInfo": { "supportsQueryWithHistoricMoment": false, "startArchivingMoment": -1 }, "supportsCoordinatesQuantization": true, "supportsDynamicLegends": true }