The hydrilla menace: 2025 marked a turning point

A boater prepares to launch from O’Hara’s Landing at East Twin Lake this past summer, near the area where hydrilla was first discovered in 2023.
By Debra Aleksinas

A boater prepares to launch from O’Hara’s Landing at East Twin Lake this past summer, near the area where hydrilla was first discovered in 2023.
SALISBURY — After three years of mounting frustration, costly emergency responses and relentless community effort, 2025 closed with the first sustained signs that hydrilla — the aggressive, non-native aquatic plant that was discovered in East Twin Lake in the summer of 2023 — has been pushed back through a coordinated treatment program.
The Twin Lakes Association (TLA) and its coalition of local, state and federal scientific partners say a shift in strategy — including earlier, whole-bay treatments in 2025 paired with carefully calibrated, sustained herbicide applications — yielded results not seen since hydrilla was first identified in the lake.
The arc of the problem
The Connecticut River strain of hydrilla at East Twin Lake, first detected near O’Hara’s Landing Marina, is an unusually robust variant that quickly triggered emergency removals, diver searches and spot treatments, as TLA officials scrambled to contain fragments capable of rapidly sprouting into new beds.
By 2024, the cost of fighting the invader had grown significantly, straining both community and association budgets as managers moved from isolated spot treatments to serial applications and broader planning efforts. Monitoring and repeated partial treatments that year helped prevent larger outbreaks but failed to eliminate the plant.
“It became pretty clear that the Whack-a-Mole strategy wasn’t going to work,” said George Knoecklein of Northeast Aquatic Research, the TLA’s limnologist.
A strategic pivot in 2025
Drawing on lessons from earlier seasons, TLA leaders and limnologists adjusted their approach in 2025. Instead of reactive, site-by-site responses, the association began the season with a planned, sustained dosing of the northeast cove of East Twin Lake and the lake’s full littoral zone beginning in late May, maintaining low, permitted concentrations of the systemic herbicide fluoridone throughout the growing season.
Operationally the work involved close tracking of application tracks, repeated water sampling to confirm target concentrations, and diver-assisted surveys in deeper water to find any remaining pockets.
The payoff: hydrilla retreated in 2025
By mid-summer and into early August, field surveys and association updates reported a dramatic decline in visible hydrilla within the lake.
At the TLA’s annual August meeting, association leaders described the season as “the first good news we’ve had in three years,” while cautioning that the victory is fragile and requires continued monitoring and rapid response to any new fragments or regrowth.
At the annual meeting, it was announced that the final two planned applications of the herbicide Sonar would not be needed. The slow-release pellets currently in the water are expected to remain effective, reaching the target duration of 120 days.
TLA officials reported that East Twin Lake is closer than ever to achieving a functional eradication of the invasive plant infestations.
They emphasized, however, that this progress has been made possible through continued funding, permitting, and close coordination with state partners. The success of this effort could also provide valuable insights for addressing similar challenges in other lakes affected by the Connecticut River strain.
Why this year’s approach mattered
Several elements distinguished the 2025 season: an earlier start to herbicide applications, sustained low-level dosing, frequent monitoring, and data-driven coordination among the TLA, its limnologist, state and federal agencies, and contractors.
The payoff came at a price: three years of repeated interventions had driven lake management expenses sharply higher, and the 2025 season required continued fundraising and justification to town and state stakeholders.
The wider use of herbicides in waterways remains controversial in some quarters, and TLA officials stressed that the treatments used in East Twin were done under state permits with scientific oversight — and that results would be shared cautiously as case studies for other affected lakes.
What comes next
TLA and partners made clear the 2025 results are cause for cautious optimism, not celebration.
The next steps include diver-assisted surveys of deepwater areas to check for any surviving turions or isolated plants; continued low-level surveillance and rapid spot treatment to snuff out any reappearance and sharing methodologies, and monitoring data with neighboring lake groups and state programs to refine best practices for tackling the Connecticut River strain.
The lake association’s Fall newsletter reported that while treatment costs are expected to be moderate in 2026, “the heightened level of surveillance will continue.” The TLA predicted $400,000 will be spent on lake management next year.
By the end of 2025, what began as an emergency discovery in East Twin in 2023 had evolved into a test case for a new, more intentional treatment model. The TLA and its partners achieved the first season in which hydrilla substantially receded in the lake — a breakthrough that shows the combination of early action, sustained dosing and disciplined monitoring can work against this particularly aggressive strain.
That success, however, comes with an explicit rider: vigilance, funding and science-backed management must continue if the Twin Lakes are to remain hydrilla-free.
Farmland in the Northwest Corner, where family farms rely on Public Act 490 to keep land in agricultural use
NORTH CANAAN — Concerns mounted last week across the state and Northwest Corner that proposed farmland tax increases could threaten the future of working farms. In response, owners of large agricultural tracts warned that higher property tax assessments would make it impossible to continue operating under the same rules as residential development.
Those concerns — echoed by farmers who traveled to Hartford to testify and amplified by local lawmakers — prompted Gov. Ned Lamont to order an immediate halt to steep increases in farmland property tax assessments that critics said could push land out of agriculture and into more intensive use.
The 2025 revised land-use values were compiled by the state Office of Policy and Management, in coordination with the Connecticut Department of Agriculture, using landowner survey data collected as part of the five-year update process — a methodology farmers and assessors later said produced distorted results because of low participation and uneven data.
Lamont’s action followed a Jan. 15 press conference at the State Capitol organized by Connecticut Senate Republicans, where lawmakers stood alongside farmers to call attention to sharp valuation increases proposed under the state’s farmland tax program.
Senate Minority Leader Stephen Harding, R-30, whose district includes much of the Northwest Corner, played a leading role in bringing the issue to the forefront, warning that the reassessment threatened the economic viability of family farms across rural Connecticut.
Following pressure from Harding, local farmers, and a petition with more than 20,000 signatures, the governor agreed to pause the new, higher valuations and revert to 2020 levels.
At the press conference, Harding said farmers in his district and across the state were facing projected assessment increases of hundreds — and in some cases thousands — of percent under new land-use values developed by the state.
“This isn’t about tax avoidance,” Harding said at the time. “This is about whether family farms can survive when the rules change overnight.”
Farmers attending the event echoed those concerns, saying sudden jumps in assessed values could translate into tax bills they could not absorb while continuing to operate.

The most controversial proposal would have increased the value of swamp land from $40 an acre to $970 an acre. That increase was later eliminated following public outcry, although other land categories in the new revaluation remained subject to significant tax hikes.
“Unforeseen lack of data” to blame
Lamont said in a statement, “Due to an unforeseen lack of data in establishing assessment values for these lands as required, significant increases in valuations occurred for the tax years beginning with the 2025 grand list.”
Only about 4% of the state’s farmers contributed survey data for the revaluation, according to state officials.
To address the problem, the governor directed OPM, in consultation with the Connecticut Department of Agriculture, to revoke the 2025 Recommended Land Use Values and Best Practices for farmland, forestland, open space and maritime heritage land, and reinstate the 2020 recommended land use values for these categories.
The governor also ordered immediate notification to all municipal tax assessors of the revocation and reinstatement, and mandated that a working group be convened in collaboration with the state department of agriculture, including representation from agricultural organizations, farmers, municipal leaders and assessors.
What triggered the concern?
The dispute centers on Public Act 490, the state law that allows farmland, forestland, and open space to be assessed for property tax purposes based on its current use rather than its fair-market value.
The law is intended to reduce pressure on landowners to sell to developers and to keep working landscapes intact.
Every five years, the state develops recommended land-use values that municipalities may use when setting assessments. In late 2025, updated values released by the Department of Agriculture and OPM would have significantly increased assessments in several farmland categories, prompting alarm from farmers and assessors alike.
Although the state revised the figures earlier this month after hearing concerns, many landowners said the updated numbers still represented dramatic increases.
In the Northwest Corner — where farms are often land-rich but cash-poor — farmers warned that higher assessments could limit reinvestment, complicate succession planning or push land toward subdivision or other non-agricultural uses.
Benjamin Freund of East Canaan said the proposed changes would have had a direct and immediate impact on his family’s farming operation, which comprises 455 acres enrolled under Connecticut’s farmland tax program.
“It would have impacted us, as we have all of our acres — minus the houses — under PA 490,” Freund said. “We have every land classification, from tillable acres to swamp and woodlands. PA 490 is a critical tax relief program that allows us to farm large tracts and be taxed according to the use. We could not afford to plant corn and have the same property tax as a house lot.”
Freund said his family has operated for decades under PA 490 and described the program as essential to keeping farmland in production in Connecticut.
“We could not farm in Connecticut without it.”
He said landowners are periodically surveyed to provide the raw data used to determine updated land values, but said low participation contributed to distorted results in the most recent valuation cycle.
“The Connecticut Farm Bureau recognized the issue and worked with the Department of Agriculture to address the concern.”
The third-generation Freund Farm, operated by Ben and Matt Freund, rents land and barns to Canaan View Dairy, operated by Ethan Arsenault, who owns the cows and grows the crops.
Jennifer Dubray, assessor for North Canaan, Kent and Sharon, said the governor’s action will not require changes to the current grand lists in those towns.
“The PA 490 values in those towns were all established using the latest values provided by the Office of Policy and Management at the time of their respective revaluations,” Dubray said. “In North Canaan, the revaluation took place in 2022 and utilized the 2020 values. For Kent and Sharon, the revaluations occurred in 2023, so the 2020 values were also used.”
“Consequently,” she said, “it will not be necessary to make any changes to the 2025 Grand List for these towns.”
Farmers’ input sought
In addition to directing OPM to immediately notify municipal assessors that the 2020 land-use values are back in effect, Lamont also ordered the creation of a working group that will include farmers, municipal officials, assessors, and state agencies to review the valuation process and recommend improvements before the next five-year reassessment cycle.
Harding said the governor’s action was an important first step but emphasized that longer-term reforms may be needed to ensure transparency and predictability.
“This pause gives farmers breathing room,” Harding said. “Now we need to make sure the system going forward reflects real-world farming conditions.
The Salisbury town crew out plowing and salting Monday morning.
FALLS VILLAGE — A powerful winter storm dumped more than 18 inches of snow in parts of the Northwest Corner of Connecticut Sunday, Jan. 25, testing town highway departments that were well prepared for the event but already straining under the cost of an unusually snowy season.
Ahead of the storm, Gov. Ned Lamont declared a state of emergency and urged residents to avoid travel as hazardous conditions developed Sunday and continued into Monday. Parts of the region were hit with more than 18 inches, according to the National Weather Service, with heavy, persistent bands falling all day Sunday and continuing into Monday morning.
Schools, municipal offices, churches and numerous community events were canceled or postponed through Monday as plowing operations continued and temperatures dropped into the single digits overnight.
Despite the severity of the storm, local officials said preparation efforts helped keep roads passable and emergency services operating — though many towns acknowledged the financial toll of repeated storms this winter.
“In December, we had seen as much snow as all of winter last year,” North Canaan First Selectman Jesse Bunce said Friday, before the storm arrived, citing conversations with his highway crew. “Our salt budget is getting thin, and costs like this are tough. But we have to do it no matter what happens. Public safety comes first.”
Bunce said the town had likely exceeded its snow-removal budget even before the weekend storm. Crews logged nearly 30 hours during the Jan. 17–18 weekend alone, he said, after back-to-back storms required repeated plowing and salting.
“A typical snowstorm might mean a four-hour route for our crews — three or four inches that stops overnight, allowing them to head out early in the morning,” Bunce said. “But when storms drag out, it really lengthens the work.”
North Canaan employs four full-time highway workers, with an additional employee on call for larger storms. Bunce said the town has some reserve funds and expects to shift money within the budget to cover overruns.
Falls Village First Selectman Dave Barger said his town is facing similar pressures.
“We will be over budget,” Barger said Friday. “We have used more salt this season than we used all last year — and we’re only halfway through the winter.”
Several officials pointed to a recent rain-to-freeze cycle as particularly costly, turning snow into inches of ice that required heavier treatment. Some towns adjusted their salt usage by mixing materials to conserve supplies. North Canaan, for example, has used a blend of roughly two-thirds salt and one-third sand, Bunce said. Salt currently costs about $120 per ton, compared to roughly $20 per ton for sand.
Kent First Selectman Eric Epstein said his town entered the storm well stocked and operationally ready. “The highway department has been busy and has gone through a lot of material this year,” Epstein said Friday. “We’ve had deliveries, we’re well stocked, and the trucks are in good shape. There has been an increase in costs, but so far, it’s within the budget. We’ll see if this pattern continues.”

Salisbury First Selectman Curtis Rand said Thursday that highway crews were prepared, while Sharon First Selectman Casey Flanagan also reported that his town had taken steps to be ready for prolonged snowfall and extreme cold.
Beyond road conditions, the storm triggered broader cold-weather planning at the state level.
On Wednesday, Jan. 21, Lamont’s office announced that Connecticut’s Cold Weather Protocol would go into effect ahead of the storm’s arrival, activating coordination between state agencies and municipalities.
The protocol is designed to protect vulnerable populations during periods of life-threatening cold, including arranging transportation to warming centers and shelters when needed. Residents seeking shelter were urged to visit 211ct.org or call 2-1-1 for assistance.
Municipalities also reached out directly to residents. The Town of Cornwall circulated an advisory email urging people to check on neighbors and vulnerable residents and reminding them of the town’s Storm Safety Check-In program, which provides advance notice of major weather events and wellness checks when necessary.
As crews continued plowing into Monday, local leaders said the storm underscored both the importance — and the growing cost — of winter preparedness.
"A year like this, with so much activity, it’s inevitable,” Bunce said. “We anticipate going over budget. But we’ll take it as it comes and keep the roads safe.”
With additional reporting by Patrick L Sullivan
CORNWALL — At the recommendation of the Cornwall Volunteer Fire Department, on Jan. 20 the Board of Selectmen voted to move forward with the purchase of two new trucks.
Greenwood Emergency Vehicles, located in North Attleboro, Massachusetts, was chosen as the manufacturer. Of the three bids received, Greenwood was the lowest bidder on the desired mini pumper and a rescue pumper.
CVFD’s Ian Ridgway sat on the truck committee and said Greenwood was not just chosen for the price, but also for the design of each vehicle. He said their models had a shorter wheelbase and more ground clearance, as well as extra storage space on board, compared to the next best bid.
After $100,000 in discounts offered by Greenwood, the combined purchase price for both vehicles was shown to be $1,200,408. The delivery time was estimated at 15 months.
CVFD raised $600,000 during its recent fundraising campaign, of which $500,000 will be given to the town to buy the trucks. That figure will be paired with $720,000 in town truck fund reserves. The additional donated funds will be used to outfit the trucks with equipment and tools.
“I want to praise the town of Cornwall,” said CVFD President Dick Sears. “We’re able to buy these beautiful new pieces of equipment courtesy of the tremendous citizenry of this town.”
FALLS VILLAGE — Robin Lee Roy, 62, of Zephyrhills, Florida, passed away Jan. 14, 2026.
She was a longtime CNA, serving others with compassion for more than 20 years before retiring from Heartland in Florida.
Robin loved the beach, sunshine, and gardening, and was known for her strength, humor, and unwavering support of those she loved.
She is survived by her daughter, Sierra R. Zinke, and brothers, Darren Roy and Todd Roy.
She was preceded in death by her parents, Sharon Thomkins Roy and Robert Roy, and her brother Nevin Roy.
No services will be held at this time.