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AlluvialFans_NEW
002
345926.132900
372633.676500
5479734.316300
5527437.040700
1
0.014
Projected
GCS_North_American_1983
Linear Unit: Meter (1.000000)
NAD_1983_UTM_Zone_10N
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20260408
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Alluvial Fans
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Alluvial fan hazard areas derived from technical studies and provincial flood hazard mapping. These areas identify locations where debris flow and fluvial processes may occur and are used for planning and screening purposes.
<DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>iMap updated: April 8, 2026</SPAN></P><P><SPAN>This layer represents mapped alluvial fan areas compiled from multiple sources:</SPAN></P><UL><LI><P><SPAN>Oyster River alluvial fan derived from Kerr Wood Leidal (2021) Coastal Flood Mapping Project (Technical Memorandum #2 – Fluvial and Coastal Geomorphology)</SPAN></P></LI><LI><P><SPAN>Additional alluvial fan features derived from the Province of BC Flood Hazard Mapping dataset (2004)</SPAN></P></LI></UL><P><SPAN>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><P><SPAN>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>
Kerr Wood Leidal Associates Ltd. (2021)
Province of British Columbia – Flood Hazard Mapping Program (2004)
Comox Valley Regional District (data compilation and maintenance)
<DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>This dataset is intended for planning and screening purposes only and is not a regulatory boundary.</SPAN></P><UL><LI><P><SPAN>Boundaries are approximate and may not reflect site-specific conditions</SPAN></P></LI><LI><P><SPAN>Not all alluvial fan hazards may be identified</SPAN></P></LI><LI><P><SPAN>Mapping should not be used as a substitute for site-specific professional assessment</SPAN></P></LI><LI><P><SPAN>Users are responsible for independently verifying information prior to development decisions</SPAN></P></LI></UL></DIV></DIV></DIV>
flood; flood hazard; alluvial fan; floodplain; hazard mapping; Bylaw 890; planning; geomorphology
Enterprise Geodatabase Feature Class
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dataset
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AlluvialFans_NEW
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OBJECTID
OBJECTID
OID
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10
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Internal feature number.
Esri
Sequential unique whole numbers that are automatically generated.
iMapGDB.GIS.AlluvialFans_NEW.AREA
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Shape
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Feature geometry.
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Coordinates defining the features.
PERIMETER
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ID
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TAG
TAG
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MAPSHEET
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REG_SERV
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FTR_NAME
Feature Name
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RECEIVING
RECEIVING
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INFO_SRCE
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INFO_DATE
INFO_DATE
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ENTRY_DT
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ENTRY_PR
ENTRY_PR
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DATA_CAP
DATA_CAP
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DATA_ACC
DATA_ACC
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FCODE
FCODE
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COMMENTS
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FTR_TYPE
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Source Organization
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Source_Project
Source Project
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Source_Doc
Source Document
String
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Source_Date
Source Date
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Source_Name
Source Layer Name
String
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Source_URL
Link to Source Layer
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Mapping_Scale
Mapping Scale
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50
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Use_Type
Use Type
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Notes
Important Information
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Caveat/Limitation
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Shape.STLength()
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