To Protect and Improve the Quality of Lake Sylvia

Greater Lake Sylvia Association


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Starry Stonewort Treatment Plan

The GLSA Board has announced the expected public landing closure date for treating starry stonewort on Lake Sylvia has been moved back to the 19th of this month. GLSA has incurred  some delays with the required permits. The process of treating the public landing  will be done by hand pulling of the algae that looks like a plant by scuba divers who will then feed it into a suction hose for removal from the water. Using this approach will hopefully keep pieces of the algae and the "stars" (bulbils) produced by the plant from spreading and reproducing. This will be followed-up with a treatment of two different chemicals to try to kill any remaining algae. The GLSA Aquatic Invasive Species Committee has combined two of the DNR approved treatment methods which we feel is the most aggressive approach known at this time in Minnesota. The site involved is approximately 1/2 acre at the public landing. The DNR has done a complete survey of both lakes for starry stonewort, and this site is the only known location at this point in time.

A containment barrier will be installed to keep water and the algae material contained in the 1/2 acre site as much as possible while treatment occurs. 

Reducing the boat traffic into and out of the landing until treatment starts will assist in keeping the algae from spreading into more of the lake.  The GLSA cannot overemphasize how very serious of a problem this is for any lake that becomes infected and we encourage every boat leaving Lake Sylvia NOT travel to any other lake or to contact the DNR to request decontamination.  We have permission from Camp Chi Rho to use their ramp for all removal and launching of boats on Lake Sylvia during this process.  Please refrain from using the current public landing if possible and immediately start to use the launch site at Camp Chi Rho on the south end of Lake Sylvia.  Signs will be put up at Camp Chi Rho directing you to the launch site and parking area.  Once all permits have been approved and treatment begins, it will take 3 weeks to re-open the public access.

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Starry Stonewort found on Lake Sylvia in Wright County

On Thursday September 29th Chris Jurek, DNR  aquatic invasive species specialist reported to the GLSA that Starry Stonewort was found on West Lake Sylvia at the public access. The access has been posted to notify boaters of this new infestation.

Starry stonewort are grass-like algae that are not native to North America. The plant was first confirmed in Minnesota in Lake Koronis, near Paynesville in Stearns County, in late August of 2015. Since that time, the DNR has reported infestations at Lake Winnibigoshish, Moose Lake , Rice Lake , Upper Red Lake and Cass Lake.

The GLSA Board is meeting with the DNR on Monday to discuss treatment options.

As new information is available we will post it on our website.

You can read more about Starry Stonewort, its impact and how to identify it in the latest Loon Calls and on the Lake Sylvia AIS page.

The map below shows the location of the plants (red dots) and the other surveyed locations (yellow).

Zebra Mussel Found in Lake Sylvia (Updated 6/28/16)

A crew from Anchor Dock and Lift  discovered a Zebra Mussel in about 15ft of water at the southernmost part of the East Lake and attached to weeds. We conducted  subsequent searches with the DNR, Blue Water Science and  volunteers. We found a single ZM in a second location also on the East Lake. Based on these findings, the DNR has classified Lake Sylvia as infested with Zebra Mussels and has posted a warning sign at the public access.

Steve McComas of Blue Water Science has prepared a report for the GLSA Board of the search efforts and our options for treatment. After consulting with Steve and Chris Jurek (Aquatic Invasive Species Specialist ) of the DNR the GLSA board has concluded that there is no viable treatment option for our infestation that would allow us to eradicate Zebra Mussels in Lake Sylvia.

Zebra Mussel Found at Site 5


Zebra Mussel Found at Site 3 (Original)

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