Aquatic Plant Management

Committee Members Committee Documents
Cmr. Mike Waghorn (Chair)
Dan Schultz (DASH)
Brandon Begota (Monitoring)
Steve Larry (Treatments)
Gary Bluemel (Harvesting)
2019 Herbicidal Treatment Permit
2019 AIS Areas
2019 Navigational Lanes
2019 DASH Areas
2019 Proposed Harvesting Areas

The Aquatic Plant Management (APM) Committee is responsible for managing the aquatic plant growth, both Invasive and Indigenous, throughout the waterway. We will clearly communicate to the WWMD Board and Owners through monthly board meetings, regular reports and updates to this Website. Click here to see the latest meeting minutes, which include committee reports.

Aquatic plant conditions change on a continuous basis. Effects of the seasons, floods, droughts, heat waves and dam levels affect the Aquatic Plant population in different ways. It is the role of this Committee to explore, recommend and implement the use of all appropriate approaches possible to manage these changing conditions in a cost effective manner.

2019 Aquatic Plant Management Plans

As the weather (finally) warms up, we know the weeds (Aquatic Plants) will begin to grow. The APM Committee has several approaches this year to do the best we can to control them.

1. Herbicidal treatments
The first step before we can do any treatments is to obtain a permit from the Wisconsin Department of Natural Resources (WDNR). The application was completed earlier in the year and we received the approval last week. The permit is available in the links above. This permit allows us to treat for Aquatic Invasive Species (AIS), as well as to treat lanes that impair navigation to or from a pier head. Links to maps above show the areas we will treat for AIS and lanes for navigation. The AIS areas are only those marked on the map as ‘2018 Final Herbicide Application Areas’ This treatment will happen in mid-late May.
Navigational treatments will be done periodically throughout the season. We expect to do 4-5 treatments. NOTE – not all lanes will be treated every time, only areas where the growth impedes navigation. If new areas come up this year we will work with the WDNR to treat those as well.

2. Diver Assisted Suction Harvesting (DASH)
We are continuing our DASH program in 2019. Weeds are removed by hand and suctioned into a collection bag on the pontoon. It is labor intensive and expensive but works well in the shallow areas.The map above shows the areas that we have permitted. We will likely not be able to complete DASH in all these areas but will prioritize them based on conditions.

3. Weed Harvesting
We are exploring alternatives for weed harvesting in certain areas of Tichigan. Possible areas are shown in the map above. We are also looking at a new machine (Silver Mist) that ‘pulls’ the weeds and could possibly work both in Tichigan and in the shallower bays – More to come.

4. Water Quality Monitoring
Based on recommendations from the consulting company, Onterra, who is working on our Lake Management Plan, we are beginning a more extensive water quality monitoring program. We are currently determining the areas that will be monitored along the waterway.

Flowering Rush Found in Our Waterway

During the herbicidal treatment done on June 2nd (2016) we identified a new Invasive Species in our waterway. The WDNR was with our treatment provider and confirmed that we have a small amount of Flowering Rush growing in some areas of the shore line. When caught early, this is easy to remove with hand pulling. Wisconsin Lake and Ponds Resource (WL&PR) is recommending a full survey with hand pulling being done at the same time. This work is covered by a WDNR Rapid Response grant. Attached here is the grant application.

Starry Stonewort

A new invasive species, Starry Stonewort, has been detected in some local lakes. This species has been known to cause nuisance conditions in Michigan, New York and Indiana but is new to Wisconsin. Our waterway has been surveyed and none has been detected. Our Clean Boats/Clean Water program is checking boats at the Library Launch and we have no reports of any being found.

The information we have received from the WI DNR clarifies that Starry Stonewort does not kill fish and the lake will not ‘die’ if this plant becomes established. However, it can affect the aquatic plant community and alter the aquatic habitat in the waterway. We will include Starry Stonewort in our pre- and post-season surveys and if it were to be found it will be included in our Lake Management plans.

Archived Aquatic Plant Management Committee News

2015 and 2015 Update

The committee will continue to explore new approaches and adjust how we implement the current techniques. We are always open to input and feedback, if you have heard of other tactics, please feel free to let us know.

Cmr Mike Waghorn
Chairman APM Committee
312 952 1959