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WUQWATR

Aquatic Invasive Species

Both Zebra and quagga mussels are native to the Black Sea in Eurasia and were first detected in the Great Lakes in 1988; likely brought in through the ballasts of ocean container ships . They both have the capability to densely colonize hard and soft surfaces of lake bottoms. Quagga mussels tends to inhabit deeper waters than zebra mussels. Both mussels can have significant impacts on lake ecosystems!

Why are they of concern?

  1. Zebra and quagga mussels filter lake water to the point where there is limited food for native filter feeders such as invertebrates that support our lake food chain. This could cause the Walleye and Pike populations in our lake to diminish if they cannot adapt to the new ecosystem.
  2. Intense filtering increases water clarity, allowing sunlight to reach lower depths increasing the growth of filamentous green algae which can wash up to rot on local shorelines.
  3. Mussel waste can host botulism bacteria which can accumulate in the food chain resulting in mass die-offs of fish eating birds.
  4. Colonization of water-intake piping structures at water treatment plants results in clogging and expensive remedial measures.

What do they look like?

What can I do to prevent Invasive Mussels from entering Saskatchewan’s Lakes?

Remember to practice: Clean, Drain, Dry

If you are:

  • Returning home from out of province
  • Visiting from out of province
  • Moving between waters within Saskatchewan

Please follow these important steps to help protect Saskatchewan waters from invasive species:

Clean and inspect the watercraft, trailer, equipment and all gear that made contact with the water.

  • Remove all visible plants, animals and mud. Scrub/scrape grainy surfaces that feel like sandpaper, as this could be young mussels too small to see.
  • Wash, scrub or rinse using high pressure, hot tap water preferably 50C (120F) – away from storm drains, ditches and waterways.
  • Inspect the watercraft, trailer and vehicle.

Drain all on-board water from the motor, livewell, bilge, and ballast tanks.

  • Flush with hot tap water away from storm drains, ditches and waterways.
  • Leave plugs out during transport and tilt watercraft when stored to allow the bilge to both drain and dry.

Dry your watercraft, equipment and all related gear completely, preferably for at least five days while leaving compartments open to dry.

(Government of Saskatchewan)

Quick PSA

What is WUQWATR doing to help?

With funding from the province, WUQWATR will be running a monitoring program through to January 2022. Our staff has established monitoring stations in the following Lakes

  • Last Mountain Lake
  • Buffalo Pound Lake
  • Wascana Lake
  • Humboldt Lake
  • Little Manitou Lake

Each summer we establish monitoring substrates and collect samples to test for veligers (baby mussels) around public docks in our lakes. Preventative monitoring is important to make quick decisive action if they are found.


Thank you to the Fish and Wildlife Development Fund and Invasive Species Centre for providing the funding to make this sampling possible.

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Contact Us

Email: info@wuqwatr.ca

Phone: (306) 946-6533

Mail: Box 965 Regina SK, S4P 3B2

Our Vision
To ensure sustainable, healthy watersheds.


Our Mission
To promote and deliver sustainable watershed management.


Founded in 2008, we have been delivering watershed plans and programs ever since.

We are a grassroots, community driven, non-profit organization working with stakeholders and researchers to implement programs and initiatives that will protect our lakes, rivers, and creeks.

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