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Starry stonewort management

$9,985 of $150,000 goal

Raised by 69 people in 6 months
The invasive aquatic plant, starry stonewort,  has been found in Geneva Lake. If allowed to spread through-out Geneva Lake,  it could significantly change the lake's biological community, impacting fishing, swimming, boating and water quality.   To prevent it from spreading and causing a significant impact on Geneva Lake's biological community, we wish to make an aggressive and timely (spring 2019)  attempt to eradicate/control this invasive.  Using hydraulic  dredging in the area where it is found we will remove the plant and its reproductive portions (bulbils) found in the sediment.  Cost estimates for dredging are around $150,000.  The money will go to the Geneva Lake Environmental Agency (GLEA)  an inter-municipal lake management agency for starry stonewort management. The removal of this threat to Geneva Lake by dredging will benefit all who live around, recreate in  and enjoy this high quality lake.  As the Director of the GLEA, threats to Geneva Lake's quality are concerning.  We need to act and act fast if we hope to, at least, prevent it from spreading in Geneva Lake.  On behalf of Geneva Lake we thank you for you assistance.
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A curtained Trinke Lagoon post chemical treatment.

Geneva Lake Management for Starry Stonewort

Starry stonewort management in an isolated bay of a lagoon on Geneva Lake is continuing with the hope of eradicating the invasive from the lagoon. The bay was chemically treated in mid-June to kill the growing portion of the plant. The lagoon was curtained off to contain the chemical and help contact the targeted plants. Unfortunately, within four days of installation, the curtains were vandalized and did not isolate the lagoon.
Based upon the findings of the plant survey and the post-treatment efficacy assessment, as second chemical treatment is scheduled for later in the summer.
Lake-wide plant surveys are being conducted in July to identify if the plant has become established at any other location within the lake. Information on the survey will be released upon completion and analysis.
Launch attendants are being trained per Clean Boats-Clean Waters to help keep aquatic invasives species out of the lake. Cleaning of boats before leaving any launch site is mandatory.
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In August 2018 the aquatic invasive plant starry stonewort was found in an isolated area within Geneva Lake. The Geneva Lake Environmental Agency is taking an aggressive approach to remove this non-native plant before it gets into other areas of the lake. After several months of putting together a hydraulic dredging program, finding contractors, locating a dewatering and disposal site, applying for needed permits and funding, things are coming together to initiate the dredging. Due to weather and timing, the dredging date is now set for after Labor Day 2019.

The GLEA plans to dredge (hydraulic) approximately 2,000 cubic yards of sediment from the easterly lagoon and pump the dredged spoils to a nearby dewatering site. The filtered water will return to Trinke Creek. The dredged spoils will dewater in geotextile bags for several months before being hauled offsite and capped at a Walworth County approved disposal site. The project will also include at least two summer 2019 chemical treatment applications within the lagoon to control the migration of the invasive species until the fall 2019 dredging. Warning buoys will be placed in the lagoon at the plant’s location, cautioning boaters to stay away.

The chemical treatment of starry stonewort is intended to kill the vegetative or growing part of the plant, but it does not kill the reproductive tiny star shaped bulbils that are found in the mud. Until the bottom is dredged, only care by boaters can prevent the transport of the bulbils from one area of the lake to another. We ask all to STAY AWAY from the buoys. Clean all vegetation and bottom mud from your boat and anchors before moving to another location on Geneva Lake or to any lake.
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The starry stonewort management effort for Geneva Lake is moving ahead. We would like to thank the many individual and groups that have contributed to our cause. We still have a long way to go, we are grateful for those who have started us on our way with their donations.

The management option that we have chosen to pursue is to hydraulically dredge the first bay of the lagoon and to pump it to a near-by dewatering site. Permits and grant application are being prepared with the anticipation of being sent in soon. Once the permits are approved the project will begin. It is anticipated that the dredging will start in late April or early May and be completed before Memorial Day. During the dredging, the lagoon will be closed off by a silt curtain to prevent the movement of suspended sediment and plant material into Geneva Lake. Dewatering will continue throughout the summer. The dried spoils are planned to be remove sometime after Labor Day. Project funding is also moving forward and will allow us to move on this matter in a timely and needed manner.
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$9,985 of $150,000 goal

Raised by 69 people in 6 months
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CM
$1,000
Christine Moldauer
13 hours ago
$100
Anonymous
23 days ago
BT
$100
Barbara & Bill Turner
2 months ago
CW
$100
Cynthia Wilson
2 months ago
$25
Anonymous
2 months ago
$100
Karen Morand
2 months ago
JW
$100
Joann Wright
2 months ago
$50
Anonymous
2 months ago
MM
$250
Michele Moore
2 months ago
PV
$50
PATRICIA VOGEL
2 months ago
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