First phase of 2024 hydrilla treatment underway at East Twin

First phase of 2024 hydrilla treatment underway at East Twin

Patches of invasive hydrilla in the vicinity of the marina on East Twin Lake were treated on Monday with an herbicide known as Sonar One. The state-approved application is the first of several doses to be administered at intervals of about three weeks for the remainder of summer into fall.

Debra A. Aleksinas

SALISBURY — Targeted hotspots of the invasive aquatic plant hydrilla around the marina and in the northeast cove of East Twin Lake were treated on Monday with a controlled release herbicide known as Sonar One.

Subsequent dosing with the herbicide, used for the first time at Twin Lakes, will be repeated at intervals of about three weeks for the remainder of the summer and into the fall, according to Twin Lakes Association (TLA) officials.

“Sonar is the preferred herbicide for hydrilla,” Russ Conklin, Vice President of Lake Management for the TLA, had reported during the lake association’s recent membership meeting in June.

The TLA worked with scientific advisors from the U.S. Army Corps of Engineers (USACE) and the Connecticut Agricultural Experiment Station (CAES), as well as the TLA’s limnologist, George Knoecklein, founder and principal of Northeast Aquatic Research (NEAR), regarding which herbicides have proven most effective in the management of hydrilla.

The group recommended Sonar One, a slow-release version of Sonar, which contains fluoridone as its active ingredient. Fluoridone is absorbed by hydrilla’s roots and shoots and is then transported throughout the plant, disrupting photosynthesis and preventing the plant from producing pigments that protect it from sunlight, causing the plant to bleach and die over time.

The TLA, through its contracted herbicide applicator, The Pond and Lake Connection, has received a permit for treatment specifically with Sonar from the state Department of Energy and Environmental Protection (DEEP).

The first dosing of slow-release Sonar by The Pond and Lakes Connection took place Monday. Signs of plant damage may appear within seven to 10 days of application, but it may take 30 to 90 days of continuous application to kill hydrilla.

Sonar has no labeled restrictions on swimming, watering or fishing when used as directed, according to TLA officials. The herbicide was approved for use by the U.S. Environmental Protection Agency in 1986 and has been widely used since then.

“From the literature we have reviewed including product label, and based upon the recommendation by our scientific experts, and given the decades of wide use in the United States including on lakes that are battling hydrilla, we believe this is the appropriate choice for our lakes at this time,” said TLA president Grant Bogle.

NEAR, the firm hired by the TLA to conduct water quality testing and aquatic plant surveys, recently conducted an aquatic plant survey of the entire Twin Lakes system and, as expected, found numerous beds of hydrilla around O’Hara’s Landing Marina.

Last fall a four-acre area was spot-treated with a different herbicide, ProcellaCOR, just before the hydrilla started to naturally die back and overwinter, but the noxious weed resprouted this summer.

“Last fall’s treatment did not occur until mid-September and, as such, was late,” Bogle explained. “You want to catch hydrilla as it is emerging and in the growth phase. That said, ProcellaCOR did have an impact on the standing crop but did not appear to kill the plant to the roots. We fully expected it to come up again this spring.”

One stray patch of hydrilla, identified north of the marina, was not targeted for treatment last year, or this year, because a state-listed protected native species, water marigold, grows in the area. The patch is currently blocked off with barriers to keep unsuspecting boaters from chopping off hydrilla fragments, which can then contaminate other areas of the lake.

East Twin was identified late last June as the first lake in Connecticut infected with the non-native plant, even though TLA’s Conkln said he believes it may have gone unnoticed in East Twin for several years. Since then, the strain has also been discovered in six additional lakes in the state.

“We know it’s on the move, so it’s very concerning,” said Gregory Bugbee, associate scientist with CAES and scientific advisor to the TLA in its battle against hydrilla. Bugbee and other environmentalists said there are still a lot of “unknowns” surrounding the non-native weed and the effectiveness of treatment efforts to date.

Latest News

Liane McGhee

Liane McGhee
Liane McGhee
Liane McGhee

Liane McGhee, a woman defined by her strength of will, generosity, and unwavering devotion to her family, passed away leaving a legacy of love and cherished memories.

Born Liane Victoria Conklin on May 27, 1957, in Sharon, CT, she grew up on Fish Street in Millerton, a place that remained close to her heart throughout her life. A proud graduate of the Webutuck High School Class of 1975, Liane soon began the most significant chapter of her life when she married Bill McGhee on August 7, 1976. Together, they built a life centered on family and shared values.

Keep ReadingShow less
‘Women Laughing’ celebrates New Yorker cartoonists

Ten New Yorker cartoonists gather around a table in a scene from “Women Laughing.”

Eric Korenman

There is something deceptively simple about a New Yorker cartoon. A few lines, a handful of words — usually fewer than a dozen — and suddenly an entire worldview has been distilled into a single panel.

There is also something delightfully subversive about watching a room full of women sit around a table drawing them. Not necessarily because it seems unusual now — thankfully — but because “Women Laughing,” screening May 9 at The Moviehouse in Millerton, reminds us that for much of The New Yorker’s history, such a gathering would have been nearly impossible to imagine.

Keep ReadingShow less

By any other name: becoming Lena Hall

By any other name: becoming Lena Hall

In “Your Friends and Neighbors,” Lena Hall’s character is also a musician.

Courtesy Apple TV
At a certain point you stop asking who people want you to be and start figuring out who you already are.
Lena Hall

There is a moment in conversation with actress and musician Lena Hall when the question of identity lands with unusual force.

“Well,” she said, pausing to consider it, “who am I really?”

Keep ReadingShow less
google preferred source

Want more of our stories on Google? Click here to make us a Preferred Source.

Remembering Todd Snider at The Colonial Theatre

“A Love Letter to Handsome John” screens at The Colonial Theatre on May 8.

Provided

Fans of the late singer-songwriter Todd Snider will have a rare opportunity to gather in celebration of his life and music when “A Love Letter to Handsome John,” a documentary by Otis Gibbs, screens for one night only at The Colonial Theatre in North Canaan on Friday, May 8.

Presented by Wilder House Berkshires and The Colonial Theatre, the 54-minute film began as a tribute to Snider’s friend and mentor, folk legend John Prine. Instead, following Snider’s death last November at age 59, it became something more intimate: a portrait of the alt-country pioneer during the final year of his life.

Keep ReadingShow less
Sharon Playhouse debuts new logoahead of 2026 season

New Sharon Playhouse logo designed by Christina D’Angelo.

Provided

The Sharon Playhouse has unveiled a new brand identity for its 2026 season, reimagining its logo around the silhouette of the historic barn that has long defined the theater.

Sharon Playhouse leadership — Carl Andress, Megan Flanagan and Michael Baldwin — revealed the new logo and website ahead of the 2026 season. The change reflects leadership’s desire to embrace both the Playhouse’s history and future, capturing its nostalgia while reinventing its image.

Keep ReadingShow less

A Tangled First Foray to New York in 2026

A Tangled First Foray to New York in 2026

Gary Dodson demonstrated the two-handed switch rod cast on the Schoharie Creek on April 18. The author failed to learn said cast.

Patrick L. Sullivan

The last time I tried fishing in the Catskills, in the fall of 2025, I had to stop pretty abruptly when it became apparent my hip was not going to cooperate.

So it was with considerable trepidation that I waded across a stretch of the “Little Esopus” that turned out to be a little bit deeper and a tad more robust than I thought.

Keep ReadingShow less
google preferred source

Want more of our stories on Google? Click here to make us a Preferred Source.

google preferred source

Want more of our stories on Google? Click here to make us a Preferred Source.