Raymond Waterways Protective Association (RWPA) has had dramatic success recently in its effort to remove variable milfoil from areas on Raymond shores of Sebago Lake. Like many lake organizations across Maine, RWPA has been working to prevent new infestations of invasive aquatic plants and to remove the invasive variable milfoil that has filled some coves and other areas along Raymond’s shores in Sebago.
Until
recently, Raymond has been the only town bordering Sebago Lake that has
supported milfoil removal. Over the last 11 years, while tweaking and refining
techniques and equipment, Raymond Waterways has used benthic barrier tarps and
diver assisted suction harvesting (DASH) boats and crews to kill off and to
remove milfoil plants.
The
end of this, the 2015, summer season, has finally given cause to rejoice!
RWPA
crews found no variable milfoil in Mason Cove during their last check in
September! Only a few, scattered variable milfoil plants were found at that
time in Turtle Cove and in Port Harbor Marina. Jeff Stern, summer program
manager for RWPA reports that as recently as four years ago, milfoil was so thick at Port Harbor
that marina staff “had no choice but to put in boats directly on top of the
plants,” according to Alex Gaskell, captain of the DASH boats for Raymond
Waterways . Boat propellers in the marina chopped milfoil into fragments which
took root to create new infestations and infested other areas of the lake.
Fast forward
to 2015. This summer, the DASH crew, which consisted of Gaskell, divers Joe
Marshall and Jeremy Skilling, and deckhand Dakota Dahms, could scarcely find
more plants than a person can count on one hand in the entire run of Port
Harbor, Gaskell said.
“There was a
lot of trial and error,” recalled Dave Martens, owner of Port Harbor Marina.
“At first we tried laying down mats to smother the plants but they were
problematic because they rose to the surface and got caught in boat propellers.
Harvesting is what allowed us to get hold of it.”
Port Harbor
donates a slip each year to Raymond Waterways for docking a DASH boat in return
for milfoil removal. Marina technicians also service DASH motors. RWPA is
grateful for the stalwart support from Port Harbor Marina and looks forward to
continued collaborative work on the milfoil problem.
Raymond
Waterways also extends hearty thanks to all the property owners in the Turtle
Cove and Mason Cove areas who provided volunteer help in retrofitting a boat,
extra funding support, and logistical help with mooring the boats, off loading
the harvested milfoil, and safe disposal of that harvest. This vast network of
volunteers, supportive members and property owners, and Raymond Waterways’ diligent
and experienced crew is what it took to make this success happen. Favorable
weather conditions for the last two winters may also have helped curtail the
infestations.
RWPA will
have to continue to be persistent and vigilant to keep the cleared areas clear.
In the lake setting, there is no downstream current to discourage migration of
fragments from the milfoil plants, fragments that can take root and start the
whole discouraging mess all over again! Next season, and for many years to
come, RWPAs’ DASH crews will be returning several times each summer to Turtle
Cove, Mason Cove, and Port Harbor Marina to spot and remove any milfoil plants
that appear.
In addition,
Raymond Waterways’ DASH crews will resume work in the Bayview Canals to
continue the effort there. By the end of this 2015 summer season, the DASH
crews had cleared almost half of one canal and had increased tarped areas at
the mouth of the other canal. With funding support from the Bayview property
owners, RWPA hopes to make a big push toward improved results there.
And RWPA will
continue to work on clearing the Jordan River above Route 302 of variable
milfoil. This project has been moved along mostly by volunteers with some help
from the DASH crews—but without the DASH boat! The river is too shallow and the
302 bridge is too low to allow the DASH boat to work there. So it’s been a long
job of laying tarps and careful hand pulling, repeating the process a bit
downriver each summer. Representatives from Maine Department of Environmental
Protection volunteered one workday this season. RWPA hopes that in two or three
more seasons they can declare the Jordan River clean of milfoil above the Route
302 bridge!