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LSCA Announces 2020 Milfoil Treatment

24 May 2020 5:57 PM | Jerremy Jones (Administrator)

In cooperation with Misha Cetner from the Vermont Department Of Environmental Conservation and SOLitude Lake Management (SLM), the Lake St. Catherine Association would like to inform the community that the lake will be treated for milfoil on Wednesday, June 24th, 2020.

On May 13th, biologists from SLM and our DASH suction harvesting team visited the lake to perform a milfoil survey. They have identified areas to be treated with ProcellaCOR and areas to be suction harvested.

3 areas, totaling 18.3 acres will be treated with ProcellaCOR.

During and after the treatment, please be aware of the following lake water use restriction recommendations:

• NO USE of Lake St. Catherine waters and water from the outlet stream FOR ANY PURPOSE including boating, fishing, swimming, domestic (household) use or irrigation, the day of treatment on:

Wednesday, June 24, 2020, beginning at 9 am

• Swimming/wading, boating, fishing and domestic (household) use may resume on:

Thursday, June 25, 2020, beginning at 9 am

• USE of water from Lake St. Catherine FOR IRRIGATION PURPOSES including for watering lawns, trees, or other plants may resume on:

Wednesday, July 1, 2020, beginning at 9 am or earlier based on sampling results, please refer to the website below for results

Please refer to www.solitudelakemanagement.com/vermont for additional information and updated water use advisories and recommendations.

Along with the herbicide treatment, 10 areas, totaling up to 38.7 acres have been selected for DASH. DASH is an acronym for Diver Assisted Suction Harvesting. This process involves scuba divers using suction hoses powered by a surface compressor to selectively remove milfoil from the lake bottom. They will be working throughout the season to remove milfoil by the roots in these designated areas.

As a comparison, last year, we treated 38.1 acres with ProcellaCOR and 65.8 acres with DASH for a total of 103.9 acres. Because of the success of our milfoil control program last year, we only need to address 57 acres - a 45% reduction.

Here is a map of the treatment areas for ProcellaCOR and DASH:

Treatment Notice:

Are you a member yet? Maintaining the lake costs approximately $125,000 annually. Grants, membership dues and contributions make up the majority of our funding. If you'd like to help, please consider becoming a member or making a donation. The LSCA is a 501 (c)(3) non-profit organization and any contribution that you make is tax deductible.


If you have any questions about the upcoming milfoil treatment, please email us at info@lakestcatherine.org.

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Lake St. Catherine Association
PO Box 631
Wells, VT 05774

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