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Boating season is here! With the arrival of warm weather and the cautious re-opening of activities, many of us are now thinking about boating, paddling, and fishing.

For the Columbia Shuswap Invasive Species Society (CSISS), boating season means it’s time to turn up the heat on invasive Zebra and Quagga mussel prevention. The increased movement of boats and other watercraft into the region means there’s an increased risk of an accidental introduction of the invasive mussels.

Zebra and Quagga mussels – two species of small, freshwater mussels that originate in Europe – have incredible destructive potential. The mussels occur in parts of eastern and central Canada, but fortunately they have not invaded British Columbia or our nearest neighbour, Alberta.

“Zebra and quagga mussels create enormous problems in lakes because they cling to and form colonies on objects under water: boats, dock pilings, water supply and irrigation systems – anything. This imposes costly, nuisance maintenance.  It’s impossible to get rid of them once they are established in a waterbody,” says Robyn Hooper, Executive Director of the Columbia Shuswap Invasive Species Society.

That’s not all. “The mussels will litter beaches with their razor sharp shells. They produce foul odours, and they pollute water quality which puts the lake ecosystem and drinking water at risk,” adds Hooper.

“Boat and watercraft owners have an important part to play in preventing the spread of invasive mussels,” Hooper says. This is because the primary way invasive mussels invade new waterbodies is by ‘hitch hiking’ on boats, fishing gear, and other watercraft including canoes and paddleboards. Adult mussels are small, about 1 centimeter in diameter, and may be attached to watercraft inside compartments or other hard-to-spot areas. Juvenile mussels are free-swimming and microscopic – impossible to detect with the human eye.

“At this time, we don’t really know what the tourism season might look like, in terms of the number of people travelling here with a watercraft,” says Hooper. “Even so, we are treating this very seriously. Watercraft from outside of BC could potentially be infested with invasive mussels. It could take just one infested watercraft launching into a BC waterway to start a new population of invasive mussels here.”

There are two prevention measures that boat and watercraft owners need to follow, Hooper explains. “The first measure is to clean, drain, and dry your watercraft every time you move it out of a lake or waterbody. By doing this, you’re greatly eliminating the chance that you’re moving invasive species.”

“The second prevention measure is to stop at watercraft inspection stations in your travels,” Hooper adds.

There are several watercraft inspection stations set up at entry-points to BC staffed by the Conservation Officer service. “All travellers with watercraft are must stop. Watercraft will be inspected and, if necessary, decontaminated free of charge.”

Watercraft inspection isn’t required for travellers within BC. However, residents can help raise awareness for the importance of inspection. “We encourage residents to talk to their out-of-province family and friends that plan to travel to BC with their watercraft,” adds Hooper. “The more people that know about invasive mussels and watercraft inspection, the less vulnerable we are to an infestation.”

Any suspected transport or possession of zebra and quagga mussels should be reported to the Provincial RAPP line at 1-877-952-7277. For more information about bringing a boat into BC, visit the provincial website For more information on zebra and quagga mussels, visit CSISS’s website at w

About: The Columbia Shuswap Invasive Species Society is a non-profit organization dedicated to the prevention, management, and reduction of invasive species in the Columbia Shuswap region.

Contact: For more information, please contact Robyn Hooper/Sue Davies at the Columbia Shuswap Invasive Species Society in Revelstoke at 1-855-785-9333.

Spring Events and Updates
May is Invasive Species Action Month!  |  Save the date: CSSIS spring workshops go online  |  May and June events   |  Aquatic and terrestrial field program updates  |  New  YouTube channel! 
CSISS Program updates 
It is likely that many of our invasive species field operations will continue as planned, with necessary modifications to ensure the safety of staff and contractors is maintained. We also encourage you to do your part in helping to prevent the introduction and spread of invasive species by practicing these preventative measures outlined by the BC Centre for Disease Control. Outreach activities are adapting in new and creative ways, including new workshop online formats, as per below event calendar. CSISS also has put together a Covid-19 Exposure Control Plan (as per Worksafe BC requirements) to ensure safety for our staff – funders and partners are welcome to get in touch if they are interested in viewing this plan. We hope you’re having a wonderful spring, staying safe and healthy! Please send us any feedback or questions to:
May 16th– Invasive mussel outreach display booth at boat launch in Sicamous (weather dependent, with physical distancing measures in place)May 16th  – May 23rd  National Invasive Species Awareness Week : week of webinars offered by the Canadian Council on Invasive Species.

May 21st– CSISS will be a guest speaker for the Canadian Council on Invasive Species’s webinar series:  Reducing the spread of Invasive Species through Play Clean Go. Register for webinar here.

May 27th CSISS and CKISS are hosting a webinar with the Columbia Basin Environmental Education and Network’s Wild Voices Online series: From Here and Away; Exploring the Differences Between Native and Invasive Species in BC’s Wetland’s and Beyond. Register here!

June 16th and June 30th – Join one of two CSISS online workshops on Invasive Plant ID and Management  – Carrot Family ID focus (e.g. Wild Parsnip, Wild Chervil, Giant Hogweed) – see more information below! Register HERE.

June 24th– Edible Invasives Workshop online through Okanagan College. Register HERE.

More details of the above events described below!


Spring Invasive Plant ID and Management Training goes online!

Want to know how to identify and manage invasives? Join one of our two training sessions offered FREE online this June

CSISS will be hosting one hour online workshops that are applicable to industry, forestry, Indigenous Peoples, municipal and regional staff, landscapers, gardeners, stewardship groups and other interested individuals. Learn to identify key invasive plants in your area and implement best management practices in the field to prevent the spread of invasive species. The ID portion of the course this year will focus on the carrot family species – such as Giant Hogweed, Wild Chervil, Wild Parsnip and others. Sign up for one of the course dates below!

Dates: June 16th (10 am-11am PDT) and June 30th (2pm-3pm PDT)
 Zoom Meeting
These workshops are FREE however pre-registration is required.
Registration details here

Teachers and parents mark your calendars!

We will be hosting a webinar alongside Central Kootenay Invasive Species Society for elementary- intermediate primary age students. It will take place May 27th through Columbia Basin Environmental Education Network (CBEEN)‘s Wild Voices online series! Join us to learn about native and invasive species in BC’s Wetlands and Beyond🐸🐢 REGISTER HERE! More details below.

From Here & Away; Exploring the Differences Between Native & Invasive Species in BC’s Wetlands and Beyond!This webinar will focus on the differences between native and invasive species in wetlands and beyond. An introduction to the impacts and characteristics of invasive species will be followed by a lesson on why the American bullfrog and yellow flag iris are unwelcome guests in our wetlands.After the lesson and discussion, students will be given activities that will turn them into Citizen Scientists while exploring the great outdoors . Activities include a backyard biodiversity scavenger hunt, creating a nature journal and using technology to identify and report invasive species

Webinar Details

Date: Thursday May 27, 2020
Time: 10 am Pacific Time
Presenters: Laurie Frankcom from CKISS and Kim Kaiser from CSISS
Recommended Grade Level: Primary and Intermediate Elementary

Register here!

Aquatic Program Updates

Watercraft Inspection stations (run by the Conservation Officer Service) should be up and running by mid-May, inspecting and potentially decontaminating watercraft coming into BC to prevent the spread of invasive mussels and other aquatic invasives.  More information on their program website:

The CSISS invasive mussel monitoring program will again be sampling lakes across the region for zebra or quagga mussels to facilitate early detection – thanks to Habitat Conservation Trust Fund and Shuswap Watershed Council for their ongoing support.  All steps will be taken to ensure staff safety including physical distancing during activities.

Please report any suspected invasive mussels to the RAPP line on 1-877-952-7277. If you’re bringing your boat from out-of-province, contact the Provincial Program at to determine if your boat is HIGH-RISK and should be decontaminated for possible zebra or quagga mussel presence before accessing B.C.’s lakes and rivers. It’s free! Do not launch the boat into any B.C. waters until you have received instruction from a B.C. Provincial Aquatic Invasive Species Inspector. 

CSISS will be a guest speaker for the Canadian Council on Invasive Species’s webinar series for National Invasive Species Awareness Week!Reducing the Spread of Invasive Species Through Play Clean Go
THURSDAY, MAY 21, 2020   10-11  am PT

Learn how CCIS and partners are encouraging outdoor recreation and protecting valuable natural resources in parks, along trails and other spots by preventing the spread of invasive species.

Register for Play Clean Go webinar here

Updates from the Local Dyers’ Palette Project in Golden!

  • They  have finished all the actual dyeing, creating metres and metres of dyed yarn samples and shades of pink, green, yellow and brown, all delicate and soft and just lovely.
  • They collaborated on the text and have created a primer booklet for dyers of wool that we are proud of.  Each booklet is 8.5″ X 5.5″ (half of a regular size of paper) and printed on heavy weight (card stock). 

The booklet will be ready very, very soon and they are ready to take orders.  The exact price will be dependent on the number of copies we print but it is looking at less than $12 each.  
Please go to this link  and leave your name and email and they will order accordingly.

CSISS has a new YouTube channel!
We will be posting plant ID videos, training for industry groups, invasive species art and clips from the field.
Terrestrial Field Program Updates

The CSISS Terrestrial Field Program is back in action. Training for municipal, regional and federal staff are being provided through an online format. DO NOT MOW signs for knotweed are being installed along roadways throughout the region and invasive plant inventories, treatments and monitoring are beginning late May/ early June.

The program is being adjusted to ensure the safety of staff and contractors is maintained.

Invasive Plant ID and Edible Weeds Workshop June 24th

This course will delve into invasive plant identification and will also explore the edible and medicinal properties of weeds. What makes a plant “invasive”, how do we control them, how can we reduce their impacts, and what can we do to benefit from the plant? Come join the team from the Columbia Shuswap Invasive Species Society to find out!
On Wednesday, June 24th at 1:30 pm Okanagan College will be hosting a one hour online workshop with CSISS to explore the topic of invasive plants, with a special focus on their edible properties. The goal is to prevent spreading of these species, while harvesting their beneficial properties and reducing waste.

There will also be identification guides and recipes to share!
Register HERE

See 20+ Edible Weeds in Your Garden (with recipes)

CSISS is grateful for the support of many partners and funders:
Copyright © 2020 Columbia Shuswap Invasive Species Society, All rights reserved.
We send this newsletter to all CSISS contacts, please let us know if you would not like to be on our contact list.Our mailing address is:
Columbia Shuswap Invasive Species Society
P.O. Box 2853
Revelstoke, BC V0E 2S0

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Looking for ways to fill your days? Gardening is a great way to get outdoors.

Many of us are currently marooned at home and looking for ways to occupy our time. While we patiently wait for the snow to melt, it’s a great time to get a head start on your garden.

Learn to Identify plants!

While we won’t be able to offer our spring Invasive Plant ID and Management Workshops in person this May, you can find useful resources to help you learn to identify and manage invasive plants through our website We hope to be able to offer invasive plant ID workshops later in the year or through an online format. You can also learn about choosing native and non-invasive plants for your garden through the provincial PlantWise program and free . If you are interested in gardening using native plants, check out the Habitat Acquisition Trust’s Native Gardening page here.

Did you know?

Surprisingly, it is still not illegal to import, purchase or sell invasive plants in BC. For this reason, we work closely with garden centers and plant nurseries in the region to help ensure they are not accidentally providing invasive plants or seeds for sale. We are thrilled that most plant nurseries and garden centers are helping to protect native biodiversity by doing their best to provide only non-invasive plants for purchase. Support your local garden center by only asking for non-invasive varieties of plants.  Get the PlantWise app to learn if your choice of plant is invasive or not!

Get a head start on planting in doors

To comply with social distancing, many plant nurseries and garden centers in the region have likely closed their store fronts, but may instead be offering online and phone orders, curbside pick-up and delivery options. Check with your local nursery to see what options they might have available.  Start vegetable seeds at home to grow in your garden this year.  Vegetable plants are not invasive!

Discover what’s in your backyard

As snow melts and plants begin to spring up, be on the look out for potential invaders and get started on weeding in your yard early this season! Check our website for tips on how to manage and dispose of invasive plants from your property. Invasive plant disposal is free at CSRD landfills and transfer stations – just let the attendant know and ensure plants are bagged.

Go for a plant ID walk

No yard? No problem, go for a solo walk and take note of the plants you see in your neighborhood. As shoots emerge from hiding and flowers flourish, you can use the Report an Invasive App  on your phone to help identify and report invasive plants that you come across.

Ask an expert!

If you are having trouble identifying a species or need advice on how to best manage a pesky plant, we are here to help you manage invasive plants on your property. Contact us at info@columbiashuswapinvasives or follow us on Instagram and facebook @ColumbiaShuswapInvasives


Request for Qualifications – Invasive Plant Spray Contractors Apply Now!


The purpose of the Request for Qualifications (RFQ) for herbicide contracting services is to:

  1. Allow submissions (“Submissions”) from interested parties (“Respondents”) describing the expertise and capability of the Respondent to perform one or more of the types of services outlines (collectively, the “Services”); and
  2. Identify a list of qualified Respondents (“Qualified Respondents”) the Columbia Shuswap Invasive Species Society (CSISS) may contact on an as and when required basis to enter into negotiations for a contract.

CSISS has no specific target number of Respondent to be pre-qualified and the total number pre-qualified will be determined at the sole discretion of CSISS. The list of Qualified Respondents is intended to be a resource for CSISS and not to restrict CSISS’s ability to contract with persons who are not listed as Qualified Respondents.


Overview of Work/Service Required

Work consists of Invasive Plant Inventory and Treatment in the Columbia Shuswap Regional District within British Columbia. The general nature of the Work to be carried out consists of operational services related to the survey, treatment and monitoring of designated invasive plant species that are found on a variety of jurisdictions, which may include but not limited to: Ministry of Transportation and Infrastructure  (MOTI), Ministry of Forests, Lands, Natural Resource Operations and Rural Development (FLNRORD), Ministry of Environment (MOE – e.g. BC Parks), Regional District properties, Municipal properties, Conservations Lands, Private and Industrial Properties, and may include road rights-of-way, community pastures, forest openings, gravel pits, and quarries. The goal of this work is to prevent new introductions, and reduce existing, invasive plant species spread.


Email Submissions

Respondents must submit their Submission (see submission form below) by email to Robyn Hooper at  before April 10, 2020 at 4:00 pm PST. The subject line must read – CSISS RFQ Submission 2020. The CSISS will confirm receipt three business days after closing of the RFQ submission deadline.



Laura Gaster- Field operations Program Coordinator


Laura has always loved working and living in the Columbia Shuswap region. She joined CSISS in 2015 and currently coordinates the Field Operations Program. From inventory to treatment to monitoring, Laura is dedicated to creating an efficient and effective program focusing on preventing the introduction of new invaders, reversing the spread of existing species and restoring native ecosystems to a healthy functioning level.

Highlights of working with CSISS include developing relationships with passionate community members and seeing the difference each individual can make.

Chasing the mountain lifestyle, you may see her around Revelstoke biking, trail running, skiing or spending a large portion of her Saturday at the local farmers market.


Sue Davies- Aquatic Invasive Species Coordinator

I’m Sue, the aquatic invasive species coordinator for the Columbia Shuswap Invasive Species Society (CSISS).  I grew up in New Zealand, surrounded by both the stories and the reality of invasive species like European rabbits, which in the worst affected areas in New Zealand, can be so thick on the ground that the ground literally moves with them. I have always been committed to preventing the spread of invasive species, and my work at CSISS allows me to work closely with both the authorities and the public in order to help prevent the spread of aquatic invasives into our beautiful BC lakes and rivers.

I spend my time sampling some of the many water bodies in the Columbia Shuswap region, looking for potential infestations of invasive mussels and other invasive species.  A day sampling usually starts with packing up the gear I will need for the day, then a long drive!  I start early, often driving as much as 2 hours before getting to my first location of the day.  When at the lake, I usually sample from available dock structures.  I throw my sampling net, which has a very fine mesh (64-micron mesh to be precise) and collect a plankton sample from several net tows at each site.  The sample is condensed into a small sample bottle and preserved with isopropyl alcohol, ready to be shipped off to the lab for analysis.  I also check the underwater dock surfaces to see if any settled mussels are in evidence; the surface would feel gritty to the touch, like fine sandpaper if they were there. Finally, I test the water temperature and pH (acidity) and lower a Secchi disk into the water to get an idea of clarity of the water by seeing how deep the disk goes before I loose sight of it. I enter all the data onto my iPad GIS system.

Doing all this standing on a dock with various people enjoying their day at the lake often prompts people to ask questions about what I’m doing.  I always carry information with me, resin encased samples of invasive mussels, information sheets, and even some give-aways like chamois cloths, so that I can explain what I’m doing, and why, and also to ask their help in preventing the spread of invasive species by cleaning, draining and drying their watercraft.
I often sample multiple sites on a single lake, but if I move to a new lake, I must be very careful not to spread any invasive species on my gear.  I have several sets of sampling gear, and always use a new set on each new lake.  The gear then gets thoroughly disinfected at the end of the day, with a two step process that involves a vinegar soak to dissolve any mussel shells, and a short soak in bleach to kill any potential aquatic hitchhikers.  The gear is then hung on a line to dry before being used again.

This is such a rewarding job!  It’s great to spend my days visiting these beautiful lakes, and talking to people, but by far the best bit of my day is the feeling that I’m helping to protect the lakes and rivers we all love so much.


Kim Kaiser- Education and Outreach Coordinator

I have been working for CSISS since 2018 and currently coordinate the Education and Outreach program. I studied biology at the University of Victoria and have always been passionate about environmental education and communications.

A day in the life

Working as the Outreach and Education coordinator involves a multitude of different tasks and no two days are the same! These activities range from providing tailored presentations to various community groups, hosting restoration events and coordinating workshops, to developing educational materials, teaching students from elementary to college level, creating social media content and engaging through online platforms. A “day in the life” facilitating invasive species education is as diverse as it is rewarding.

What I like best about working for CSISS

It’s hard to single out my favorite thing about working for an organization that is really great in a number of ways! If I had to choose a couple of things, I think it would be how much creative freedom and efficiency you get from working for an organization that is forward- thinking. We have a small, effective and dynamic team at CSISS and that means we can be very efficient and progressive when it comes to finding new ways to improve our programs.

Another thing (third, but not least) is how working in the field of environmental education combines my background in science, with my passion for developing effective and engaging communications materials. It’s really exciting to work creatively to increase the understanding of environmental issues.


EMPLOYMENT OPPORTUNITY with Columbia Shuswap Invasive Species Society:

Job Title: Invasive Species Program Assistant

Job Reference: #001

Location: Revelstoke, Columbia-Shuswap. Worksites within the Columbia Shuswap Regional District. Main office in Revelstoke, BC but travel required for position throughout the CSRD.

Closing Date: March 4, 2020

Employment Duration: 4-month (May-August), 30-35hrs/week,

Wage: $18/hour (pending funding)

Application Details: CSISS Job Posting #001 – 2020 as PDF file.


Please include the following items in your application package (one PDF document combined 1, 2 and 3):

  1. Cover letter clearly stating:
  1. Resume, including two references (phone numbers)
  1. Driver’s abstract with 3 years clean driving record and claims history (Link for ICBC: )

Please submit your application package no later than March 4th, 2020 to:

Robyn Hooper, Executive Director, Columbia Shuswap Invasive Species Society

Email to:


Under the direct supervision and guidance of the CSISS Executive Director and Program Coordinators, the Program Assistant will be responsible for carrying out various functions of the Columbia Shuswap Invasive Species Society’s programs, as described in job duties below.  The base of operation will be out of Revelstoke, but there will be extensive travel throughout the Columbia Shuswap Regional District. Regular team meetings will occur weekly in Revelstoke, BC. Work hours will be full-time throughout the length of the term, but hours may fluctuate daily with weather and project demands. Work schedule likely to be Tuesday-Saturday.

Important Information:

  • Only candidates considered for positions will be contacted for an interview.
  • All candidates selected for an interview must be available for one-hour phone or in-person interview between March 16- March 30, 2020.
  • Successful candidates for Job Reference 001 will be contacted in April (pending funding) and must be available to start May 11th, 2020.

 Please send any questions to


  • Work with Executive Director, Program Coordinators and other CSISS staff to deliver invasive species Outreach, Terrestrial, and Aquatic programs.
  • Help to deliver CSISS messaging through door to door, boat launch outreach, festivals and events, and school programs throughout the region, including the delivery of our main behavior change programs: Plant Wise, Clean Drain Dry, Play Clean Go, and Don’t Let It Loose.
  • Help to build relationships with Indigenous Peoples, partners, and other stakeholders in the region to enhance collaboration on invasive species issues.
  • Assist with invasive species inventories (surveying plants / aquatic sampling) and InvasiveAlien Plant Program (IAPP) data
  • Mechanically treat small scale invasive plant infestations.
  • Track and report on successes of program.


The Program Assistant will be engaging with partners and the public on a daily basis and therefore needs to be energetic, positive, outgoing, charismatic and confident.  Successful candidates must be self-motivated, highly organized, responsible, and work well in a team.  All applicants must have completed Grade 12 or equivalent and preference to those who have or are completing a relevant post-secondary program.  All activities are physically demanding, and the position requires extensive driving throughout the region, therefore experienced driving skills are required.

Ideally, you will have a strong combination of the following skills:

  • Experience and ability to interact and effectively engage people while delivering public presentations, approaching the public with outreach materials and surveys, and engaging the public at information booths;
  • Confidence public speaking;
  • Experience working with youth and/or community groups;
  • Strong motivational skills;
  • Excellent oral and written communication skills;
  • Knowledge and interest in invasive species;
  • Ability to quickly acquire skills in conducting surveys and field work;
  • Enjoy working outdoors in variable field conditions;
  • Enjoy physically challenging work, such as weed pulling;
  • Comfortable working in remote settings;
  • Experience driving with long days and distances;
  • Experience working around water and watercraft, and;
  • Have or are working towards a certificate or degree;
  • Willingness to travel, and work weekends.

Additional Assets:

  • Experience interacting and presenting to a wide variety of audiences;
  • Knowledge of communication techniques used in interpretation (storytelling, theatre, music);
  • Training in communications, psychology, marketing, and/or natural sciences;
  • Social marketing and social media skills;
  • Experience with iPads, GIS Mapping software and Microsoft Office: Word, Excel and Power Point;
  • Experience in data collection, organization and management; and
  • Experience with report writing.

Applicants MUST Possess:

  • Current Worksafe BC OFA Level 1 or equivalent First Aid certification; and
  • A valid BC driver’s license with 3 years Driving record and claims history

 Applicants must be eligible to participate in the 1. Eco Canada Student Work Placement Program and/or 2. Canada Summer Jobs Program (requirements listed below):

 Eco Canada Student Work Placement Program Requirements:

To be eligible, applicants must:

  • If you currently study at a university or college in the areas of Science, Technology, Engineering, Art or Math (STEAM) and Business, you qualify!
  • be a Canadian citizen, permanent resident, or person to whom refugee protection has been conferred under the Immigration and Refugee Protection Act for the duration of the employment*; and,
  • have a valid Social Insurance Number at the start of employment and be legally entitled to work in Canada in accordance with relevant provincial or territorial legislation and regulations.

Students on a work permit or visa are not eligible.

 Canada Summer Jobs Program Requirements:

To be eligible, youth must:

  • be between 15 and 30 years of age at the start of the employment;
  • be a Canadian citizen, permanent resident, or person to whom refugee protection has been conferred under the Immigration and Refugee Protection Act for the duration of the employment*; and,
  • have a valid Social Insurance Number at the start of employment and be legally entitled to work in Canada in accordance with relevant provincial or territorial legislation and regulations.

  About CSISS

The Columbia Shuswap Invasive Species Society (CSISS) is a non-profit organization comprised of volunteer members representing private & public agencies, clubs and organizations in the Columbia-Shuswap Region of British Columbia. Members of the society are dedicated to increasing awareness of invasive species and associated losses caused to the natural and domestic resources of our Region. The Society performs invasive species inventory, treatment programs, promotes best management practices, and coordinates invasive species action, education and awareness activities throughout the Columbia-Shuswap Region.




Invasive Asian clam shells found on Shuswap Lake beach may indicate a new infestation, highlights importance of Clean-Drain-Dry.

Clam shells found on a beach in the Shuswap last fall have been identified as invasive Asian clam.  At this time only dead shells have been found.

“The Provincial staff have told us they have not confirmed any live individuals, and indicated that monitoring will continue for the coming season” says Sue Davies, Aquatic Coordinator for the Columbia Shuswap Invasive Species Society.

However, populations of the invasive clam aren’t far off: they do exist in several lakes in the lower mainland and are widely distributed in Washington State. This is the first indication that they may have spread to Shuswap Lake. Members of the public are asked to please report any suspected invasive species via the Provincial “Report Invasives BC” smartphone application (available for download from and any suspected invasive zebra or quagga mussels to the Report All Poachers and Polluters hotline 1-877-952-7277.

Asian clams are small bivalve shellfish, originating in Asia. They are considered invasive due to their negative impacts on many North American waterways.

Columbia Shuswap Invasive Species Society (CSISS) provides education and information to the public regarding invasive species such as Asian clam. CSISS has been monitoring lakes in the region for invasive species as part of the Ministry of Environment and Climate Change Strategy’s provincial lake monitoring program.  To date, none of the samples from Shuswap Lake have come back positive for Asian clam larvae.

The larvae of Asian clam are microscopic and could potentially be transported in standing water in boats.  Adult Asian clams are also small – the size of a fingernail – and could be embedded in mud on a boat or boat trailer.

“It’s possible that Asian clams came to the Shuswap as fishing bait, as live food, or accidentally inside a watercraft,” says Davies. “It is super important not to transport invasive species.  Never release live animals or plants into waterways, and remember to Clean Drain and Dry your watercraft when moving it between waterbodies,” she adds. “We encourage all boaters, anglers, and paddlers to Clean Drain Dry their watercraft and gear every time they move from one lake to another because it is the most effective way to prevent the spread of invasive species.”

“Just walk around your boat, remove any mud or plants, drain compartments, mop up standing water with a chamois cloth, and make sure everything, including your fishing gear, is properly clean and dry before relaunching into a new lake or river.  It’s pretty simple and can prevent a world of problems,” explains Davies.

Asian clams are self-fertile, so a single clam can start a new population. They can produce up to 70,000 eggs per year and can reach densities of up to 20,000 individuals per square meter of lake bed.  They are filter feeders and can reduce biodiversity and food available for fish.  Dense populations may have the potential to clog filters on hydro systems and water pipes, imposing costly maintenance.  They are also known to harbour parasites that are harmful to humans if the clams are consumed raw.

A fact sheet for Asian clam is available at

Travellers bringing watercraft to BC are encouraged to visit the provincial website,

The Columbia Shuswap Invasive Species Society is a non-profit organization dedicated to the prevention, management and reduction of invasive species in the Columbia Shuswap Regional District. CSISS is thankful for the generous support of the Habitat Conservation Trust Foundation, Shuswap Watershed Council, Columbia Basin Trust, the Columbia Shuswap Regional District, the Ministry of Forests, Lands and Natural Resource Operations and Rural Development, and the Ministry of Transportation and Infrastructure.

To learn more about invasive species in the Columbia Shuswap region please visit:



You’re Invited: CSISS Annual Land Manager Meeting March 4, 2020

Event Details:

Date: Wednesday March 4, 2020
Time: 1:00 pm – 4:00 pm
Location: Revelstoke Community Centre, MacPherson Room, 600 Campbell Ave. Revelstoke, BC.

Please register for the Annual Land Manager meeting HERE !

Written feedback (e.g. on Priority Invasive Plant Lists) is also welcomed before February 18, 2020 to

Annual Land Manager Meeting: The CSISS is completing its annual review of the priority invasive species list and watchlists from the 2020-2025 Columbia Shuswap Operational Plan for Invasive Species. In particular, the priority invasive plant lists help guide inventory, treatment, monitoring and data management of invasive plants within the Columbia Shuswap Regional District.

The goal of this meeting is to enable land managers to provide guidance and input on the priority invasive plant lists, watchlists and best practices within the region. The meeting objectives are to: 1) Share updates on invasive species management activities of each organization; and 2) Revisit prioritization of invasive plant species and activities for treatments, inventories, monitoring and data management and 3) any other invasive species updates and presence/absence updates to the regional watchlists.

Here is a link to the 2020- 2025 Columbia Shuswap Operational Plan for Invasive Species including the priority plant list and regional watchlist

Your input is critical in ensuring the delivery of an effective, efficient, and coordinated invasive species program in the Columbia Shuswap. We appreciate your feedback as key partners and Board members in helping with this process.
Learn more about other upcoming CSISS events and news in our recent newsletter.  Also check out our recently released 2019 Annual Report and Annual Report Infographic!

Stay connected: to join our newsletter and become a member click here.

CSISS is grateful for the generous contributions of funders and partners, including Columbia Basin Trust, Columbia Shuswap Regional District, and the Province of BC.

Copyright © 2020 Columbia Shuswap Invasive Species Society, All rights reserved.
We send this newsletter to all CSISS contacts, please let us know if you would not like to be on our contact list.

Our mailing address is:

Columbia Shuswap Invasive Species Society

P.O. Box 2853

RevelstokeBC V0E 2S0


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