Mayne Island Shoreline Mapping

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01,000500
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DRAFT
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1 Km
DATE:  October 25, 2011
Refer to Islands Trust Report “Gulf Islands Shoreline Mapping - Project Methodology” July, 2011 for detailed map information. 
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Rock (Hard) ShorelinesSediment (Soft) Shorelines
PEBBLE/SANDBOULDER/COBBLEBLUFFLOW ROCK/BOULDERSEA CLIFF
• rocky shore with 
low slopes
• 66% of shoreline   
(27.7 Km)
• stable or accreting 
pebble-sand (or shell) 
beaches (may be 
eroding where sediment 
supply is interrupted).
• 10% of shoreline      
(4.2 Km) 
• rocky shore with 
steep slopes
• 17% of shoreline    
(7.3 Km)
• boulder - cobble 
cover on beach (often 
indicates eroding 
shoreline)
• 4% of shoreline         
(1.7 km)
• moderate to high 
slopes of sediment 
(often eroding)
• Mayne Island has no 
bluff shores
low rock/boulder
boulder / cobble
pebble / sand
structurally altered*
*Shorelines 
modified by facility 
development, 
principally boat 
ramps,  seawalls, 
riprap, landfills, 
piers, groynes, or 
breakwaters.
MAYNE ISLAND: 
1.7 Km (4%) of 
Structurally Altered  
Shoreline
marsh/fine sediment
Sections of shoreline 
with significant 
structural alterations 
(>30% altered)
LEGEND: 
MARSH/FINE SEDIMENT
• low energy shorelines 
with sediment inputs 
from watersheds 
nearby
• 2% of shoreline         
(9.2 Km)
Watershed Boundaries
Drainage Conveyance Zones      
(wetlands, creeks & moist soil areas)
Islands Trust
Preserving island communities, culture and environment
MAPPING PRODUCTS PRODUCED BY:    Murdoch de Greeff Inc. (Project Lead) | Coastal and Ocean Resources Inc. | Archipelago Marine Research Ltd. | Land & Water Inc.             IN PARTNERSHIP WITH:    UBC School of Architecture and Landscape Architecture  and the  Islands Trust.
PROJECT FUNDING GENEROUSLY PROVIDED BY:  
The Mayne Island shoreline is largely bedrock and resistant to erosion. There are several sand and shell 
pocket beaches that are very important recreationally. The north side of Mayne Island is exposed to northerly 
storm winds and waves.  The west and south sides of Mayne Island are largely protected from wind and waves 
by Galiano Island and North Pender Island respectively. There are a few areas of tidal sand or mudflats, and 
several areas of saltmarsh, all of which are sensitive to human disturbance. There are high current areas in the 
passes around the island, particularly Active Pass to the west.
 
MAYNE Is.
MAP 1 of 3:   Distribution of Shoreline Types

01,000500
Me ters
DRAFT
/
1 Km
DATE:  October 25, 2011
Refer to Islands Trust Report “Gulf Islands Shoreline Mapping - Project Methodology” July, 2011 for detailed map information. 
SEASONAL 
NORTHWESTERLY 
WAVES
S
T
R
O
N
G
 
 
 
T
I
D
A
L
 
 
 
 
C
U
R
R
E
N
T
STRONG
 TIDAL 
CURRENT
Watershed Boundaries
Drainage Conveyance Zones      
(wetlands, creeks & moist soil areas)
Islands Trust
Preserving island communities, culture and environment
MAPPING PRODUCTS PRODUCED BY:    Murdoch de Greeff Inc. (Project Lead) | Coastal and Ocean Resources Inc. | Archip

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