
About the Shoreline Mapping Initiative
The Resilient Coasts for Salmon initiative has completed a five-year effort (2021 to 2026) to map shoreline features of concern along the eastern coast of Vancouver Island. These features include shoreline modifications (such as seawalls and riprap), overwater structures (including piers and docks), and log accumulation. Man-made structures and excessive log buildup can disrupt natural coastal processes, degrade habitat quality, and impact species that rely on nearshore environments, including Pacific salmon. Learn more about the effects of these features below.
The Shoreline Mapping Atlas serves as a central platform to support researchers, planners, and community members in making informed decisions to promote sustainable coastal development, healthy ecosystems, and resilient shorelines.
Shoreline Mapping Results:
- Explore Resilient Coasts for Salmon data layers, including Shoreline Modifications, Overwater Structures, and Log Accumulation.
- Overlay additional layers, such as forage fish spawning habitat and sensitivity to sea level rise, to analyze our data within a broader context.
- Download datasets for further research and decision-making.
Additional Components:
- Community Reports to view localized shoreline assessments from several communities on the East Coast of Vancouver Island.
- Coastal Adaptation Reports to learn about strategies employed at the local governments scale in the CRD and Islands Trust regions.
- Spotlight Communities to explore high-level results from other coastal communities.

Resilient Coasts for Salmon Layers:
As a part of our mapping initiative, we are focused on tracking three main feature types:
Shoreline Modifications
Man-made structures like seawalls and riprap, often built to protect shoreline infrastructure, can actually exacerbate erosion by redirecting wave energy to nearby areas. These modifications also remove key intertidal habitats and food sources essential for the growth and survival of juvenile salmon and forage fish. By stripping away the natural complexity of coastal ecosystems, shoreline modifications reduce their capacity to support biodiversity and adapt to rising sea levels.
Overwater Structures
Overwater structures, like docks and piers, cast heavy shade that degrades nearshore habitat. Juvenile salmon avoid these shaded areas, which alters their natural foraging and migration patterns by forcing them into deeper waters. There, they expend more energy and face greater predation risk. The reduced light also limits the growth of essential habitats like eelgrass and algae, along with the diverse communities they support.
Log Accumulation
While logs are a natural part of coastal ecosystems, modified logs that escape from log booms can accumulate in excess, scouring beaches, altering sediment composition, and smothering nearshore vegetation. Unlike natural logs, modified logs are stripped of root balls and branches, making them unstable and prone to rolling across critical habitats that juvenile salmon and forage fish rely on for growth, food, and shelter.
To learn more about the impacts of shoreline modifications in the face of rising sea levels, check out our Climate Change Primer. To access and download the Resilient Coasts for Salmon layers, see below.
Explore Our Map
The map widgets in the sidebar can help you navigate the data and optimize your interactive experience. For additional guidance, please refer to our User Guide. We recommend using Google Chrome on a laptop or desktop for the best viewing experience.
Home
Overview of widgets
Layers List
Toggle layer visibility
Legend
Reveal a key of layer symbols currently displayed
Feature Info
View layer data attributes and values
Shoreline Imagery
Access shoreline imagery dataset
Basemaps
Change the background of the map
Share
Share or print the map
Attribute Table
Explore the data table
This map showcases the shoreline imagery that was used to build the Resilient Coasts for Salmon data layers. We are committed to the respectful and appropriate use of this imagery. If you notice any images that you would like removed, please contact us at . Your feedback is essential to the success of our mapping initiative. To share your thoughts, suggestions, and technical difficulties, please fill out our Feedback form.
Access the Data
Click the button below to access the Resilient Coasts for Salmon datasets in the Marine Data Portal. Here, you can download our data layers in various formats for your own use. You’ll also find our protocols, which outline how the data was digitized and include data dictionaries that define key terminology. We encourage you to stay in touch and let us know how you’re using the data!
To access datasets from external sources, click on a data point within the desired layer on the interactive map. Then, scroll down in the pop-up window to find the ‘Access Layer Data’ button.
Community Reports
Click the squares below to explore reports for your community, each offering a localized assessment of shoreline alterations and log accumulation, along with recommendations for nature-based management.
Coastal Adaptation Reports
Check out the reports below to learn about the coastal adaptation strategies in place across the Capital Regional District (CRD) and Islands Trust regions, along with the barriers these communities face in implementing nature-based approaches.
Spotlight Communities
For these communities, we did not create full reports, but you can click the squares below to explore high-level results, including the extent of coastal modification, and download static maps of Resilient Coasts for Salmon data.
Additional Resources / Future Recommendations / /
- Marine Ecosystem Map: this is an interactive web-based data visualization platform, complete with over 450 layers of marine and coastal data for you to explore.
- Shore Zone: this initiative utilizes aerial surveys to inventory geomorphological and biological features of the shoreline. Shorezone data can be used to help inform community planning.
- State of Salmon:
- Pacific Salmon Explorer:
- 6PPDQ Toxicant Concentration map: This interactive map shows the sampling results for the tire-wear toxicant 6PPD-Quinone, led by the BC Conservation Foundation (BCCF) and Vancouver Island University (VIU).
- Newsletter: Shoreline modification impacts on salmon: ???
- Newsletter Vol. 3: Nature-based solutions for climate change:
- Climate Change Primer:
- Toolkits:
- Field Guide to Shoreline Mapping:
- The Climate Ready Infrastructure Service is a new free service offered by the Government of Canada to connect communities with climate experts to help inform and support projects related to addressing challenges associated with climate change.
- Check out the Stewardship Centre for British Columbia’s Green Shores programs. The Green Shores for Shoreline Development Credits and Ratings Guide can be used as a framework for implementing nature-based solutions in commercial, multi-family residential, subdivision, park, and institutional waterfront development areas.
- Sign up for Green Shores training to learn about the program’s guidelines and how nature-based solutions can provide shoreline benefits.
- Check out Northwest Straits Foundation‘s Shore Friendly program website for helpful articles and videos about shoreline restoration and coastal processes in the Salish Sea.
- Read the document: Rising Seas and Shifting Sands: Combining Natural and Grey Infrastructure to Protect Canada’s Eastern and Western Coastal Communities – Intact Centre on Climate Adaptation (intactcentreclimateadaptation.ca) to learn more about how communities can use hybrid designs.
- We strongly advocate that municipal/regional governments prioritize what is desired by local First Nations’ government and communities and allow these requests to guide next steps, including amendments to already established plans made. Ask local First Nations’ government what their capacity to engage is, what they require, and create space and time for this process. Follow engagement protocols chosen by each Nation, establish cultural safety, provide financial compensation for engagement as set by each Nation, set up agreements and/or memorandums of understanding if requested, and begin the process of educating oneself about historical and present day colonialism on Southern Vancouver Island and beyond. The following recommended management strategies are not meant to negate the positive work that the local government has done or is currently working towards. We appreciate that many local governments have taken significant steps in working respectfully with First Nations towards effective coastal adaptation. Please consider this list of recommendations a starting point in working to build coastal resilience for people and habitat.
- Collect and model comprehensive datasets for flood inundation and sea level rise modeling that include site investigations, coastal engineering analysis, alongside coastal geomorphologists and geologists.
- Collect additional data and submit to the Vital Signs data portal, including drift cells in functional condition, extent of forest cover in nearshore marine riparian areas, feeder bluffs in functional condition, areas of sediment accretion and erosion, and miles of intertidal beach in functional condition.
- Official Community Plans (OCP) can help guide decision making at a local level by addressing the following:
- Consider introducing coastal development policies with a Shoreline Development Permit Area (DPA), to protect the integrity of the shoreline, further manage or limit coastal development, and protect existing development from the impacts of coastal climate change. This includes strengthening what constitutes an exemption and ensures compliance.
- Expand the Shoreline Management plans in the OCP, with financially compensated consultation with local First Nations, to strengthen erosion monitoring (which can include indicators chosen by the Nations), to move towards a non-contingency fund to support the longevity of shoreline health, and towards planning for continued, foreseeable changes on shorelines.
- Incorporate strong sensitivity to sea level rise models into community adaptation plans; consulting models before any development permits are accepted.
- Hire coastal geomorphologists, coastal engineers, and biologists to provide expert consultation to review and provide expert guidance for approvals for shoreline development permits and design plans. Ensure that individuals responsible for issuing permit approvals have readily available access to these experts. Ensure that all Qualified Environmental Professionals (QEP) and Registered Landscape Architects hired under the DPA to supervise or provide recommendations for development plans, are: highly knowledgeable about natural coastal processes and hydrology, and include the following in their process: site specific coastal processes modelling, historical change assessments including historical knowledge, observed and future erosion potential, recommending setbacks to accommodate erosion when possible, assessments to drastically reduce project footprint and potential habitat degradation, requiring landowners to monitor the project into the future (designed by experts), and following up with monitoring requirements.
- Strengthen the OCP to minimize further hard armouring and shoreline development
- Create bylaws and policies whereby seawalls/bulkheads are a last resort. Some communities have done so by requiring that it be proven that hard armouring is the only viable option before proceeding with building a new structure or replacing/repairing an existing structure.
- Require strict ecological assessments to prevent loss of habitat, including shellfish habitat that can become buried.
- Recommend stricter conditions for development permits that address bank instability and the identification of areas that cannot be developed except what is permitted in the conditions (Hewson et al., 2023).
- Introduce laws for larger setbacks. Prohibit new builds along the coastline within a specific setback so that parks and natural areas have the ability to adjust with rising sea levels. Require adequate consultation with professionals like coastal geomorphologists.
- Remove unnecessary armouring on public lands, such as parks, with proper assessment by coastal professionals.
- Taking a precautionary approach to potential habitat degradation and habitat disruptions.
- Refer to other jurisdictions that have included Green Shores measures in their Official Community Plans (e.g., District of Central Saanich).
- Focus on bio-cultural indicators of well-being as expressed by First Nations’ community members, First Nations’ governments, and general community members. This may include physical, mental and spiritual health, ability to access safe foods, ability to practice traditions and ways of life that support holistic well-being, and much more. This can help guide restoration priorities and areas that require protection from future degradation and development.
- Protect and restore connectivity between the upland and shoreline where possible; and support soft shore approaches (nature-based approaches) for climate change impacts such as erosion, as well as critical habitat. If redevelopment in coastal areas occurs, include restoration requirements on the foreshore that protect natural coastal processes and habitat.
- Consider upgrading stormwater infrastructure and incorporating Green Infrastructure (GI) such as rain gardens in areas that have high levels of impervious surfaces to reduce runoff into the marine environment.
- Address, control and rectify contaminants and pollution, including sanitary waste control, to work towards safe access to traditional foods and a healthy ecosystem.
- Introduce stricter policies to greatly restrict or prohibit tree removal and other riparian vegetation within a specific setback distance along the shoreline.
- Create a Natural Asset Inventory and Management Plan to understand the community’s resources and how to protect them.
- Develop a strategy to reduce habitat fragmentation by boat moorings. Traditional moorings, which consist of heavy chains and anchors, drag and scour the seafloor as the tide ebbs and flows. Anchoring can scour and damage eelgrass, resulting in a reduction in the density and extent of eelgrass and creating fragmented habitat. It also suspends sediment in the water column that can smother eelgrass, reducing its ability to thrive and receive light.
- Damage to eelgrass can be avoided by anchoring in depths beyond 7m.
- Environmentally- friendly moorings contain a mid-line float that holds a rope above the seafloor – it will not scour or damage eelgrass. See here for more information.
- Explore opportunities to install Voluntary No Anchor Buoys in your community.
- Reduce impacts of overwater structures:
- Pursue and/support marinas that want to pursue eco-certification through the Strait of Georgia Alliance’s Clean Marine BC program.
- Encourage the building of salmon-friendly docks when docks are necessary, and the sharing of docks amongst neighbours when possible.
- Create and/or promote climate action incentives for community members to:
- reduce erosion on properties by incentivizing the installation of proper drainage by professionals;
- plant marine riparian vegetation with emphasis on native species;
- use nature-based soft shore restoration instead of hard armouring;
- restore riparian vegetation in locations where seawalls are necessary;
- consider managed retreat where possible;
- remove seawalls when the site and conditions are appropriate as deemed by qualified professionals; and
- apply nature-based solutions around the home, including reducing impermeable paving, discouraging the use of pesticides and fertilizers, encouraging the use of less harmful cleaning supplies or by making them, manage stormwater runoff and incorporate raingardens to help filter pollutants before it can enter waterways, and encouraging rainwater harvesting and not watering lawns during the summer months.
- Provide ongoing environmental training by professionals (local climate change specialists, biologists, coastal geomorphologists, coastal engineers) for government staff
- Provide training opportunities for local planners and other staff to understand current climate change risks and impacts, and restoration strategies that utilize a nature-based approach. The Green Shores® training program is a great place to start.
- Reduce log accumulation on beaches through log salvage. Log salvaging can be a great way to remove unwanted logs from a beach and protect forage fish habitat. Anyone looking to salvage logs from the shore must obtain a valid provincial permit. Western Log Sort and Salvage (wlssc.ca) is a licensed buyer of marine salvage logs in the Vancouver/Vancouver Island region – helping drift logs return to the market, helping to reduce the impacts to marine vessels and the environment. Learn more at Marine Log Salvage – Province of British Columbia (gov.bc.ca).
Funders & Collaborators
Resilient Coasts for Salmon is a collaborative initiative led by the Pacific Salmon Foundation with contributors such as the Stewardship Centre for British Columbia, World Wildlife Fund – Canada, Peninsula Streams and Shorelines, and many others. Resilient Coasts for Salmon is funded in part by the Government of Canada.
Community Reports
Click the squares below to explore reports for your community, each offering a localized assessment of shoreline alterations and log accumulation, along with recommendations for nature-based management.
Coastal Adaptation Reports
Check out the reports below to learn about the coastal adaptation strategies in place across the Capital Regional District (CRD) and Islands Trust regions, along with the barriers these communities face in implementing nature-based approaches.
Spotlight Communities
For these communities, we did not create full reports, but you can click the squares below to explore high-level results, including the extent of coastal modification, and download static maps of Resilient Coasts for Salmon data.




























