The LLPLD contracted with Onterra, LLC during the late-summer of 2017 to develop a management strategy for the increasing EWM population within Long Lake. With the assistance of Onterra, the LLPLD secured a WDNR ACEI grant to fund an EWM population management strategy from 2008-2012.

The Long Lake of Phelps Lake District solicited the services of Many Waters, LLC to use Diver Assisted Suction Harvesting (DASH) to manage for Eurasian watermilfoil (EWM) on Long Lake, located near Phelps, Vilas County. DASH is a mechanical process and requires a mechanical harvesting permit (Form 3200-113 (R 10/16)) from the Wisconsin Department of Natural Resources (WDNR). The 2018 WDNR Mechanical Harvesting Permit ID is NO-2018-64-0090M.

In 2000 the presence of EWM was verified by the Wisconsin Department of Natural Resources (WDNR) from Long Lake, although it was suspected of inhabiting the system for years before this date. In 2006, the WDNR completed a point-intercept aquatic plant survey, locating EWM in approximately 26% of the littoral area of the lake (<18ft). Onterra was contracted by the Long Lake of Phelps Lake District (LLPLD) during the late-summer of 2007, where the majority of the littoral zone contained colonized EWM of which approximately 25 acres was found to be surface matted.

The Long Lake of Phelps Lake District solicited the services of Many Waters, LLC to use Diver Assisted Suction Harvesting (DASH) to manage for Eurasian water milfoil (EWM) on Long Lake, located near Phelps, Vilas County. DASH is a mechanical process and requires a mechanical harvesting permit (Form 3200-113 (R 3/04)) from the Wisconsin Department of Natural Resources (WDNR). The 2015 WDNR Mechanical Harvesting Permit ID is NO-2015-64-91M

EWM management plan for 2013-2017 in Long Lake, Vilas County, WI

Eurasian water milfoil (EWM, Myriophyllum spicatum) was first documented in Long Lake in 2000. Since 2008, the Long Lake of Phelps District (LLPLD) has been actively managing and reducing the EWM population through strategically targeted herbicide spot treatments. With assistance from Onterra, the LLPLD was successfully awarded a Wisconsin Department of Natural Resources (WDNR) Aquatic Invasive Species (AIS) Established Population Control Grant in February 2013 to aid in funding the management of EWM within Long Lake from 2013-2017.

Eurasian water milfoil (EWM, Myriophyllum spicatum) was first documented in Long Lake in 2000. Since 2008, the Long Lake of Phelps District (LLPLD) has been actively managing and reducing the EWM population through strategically targeted herbicide spot treatments. With assistance from Onterra, the LLPLD was successfully awarded a Wisconsin Department of Natural Resources (WDNR) Aquatic Invasive Species (AIS) Established Population Control Grant in February 2013 to aid in funding the management of EWM within Long Lake from 2013-2017.

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annual project report