The Hydrilla Menace: Ripples of hope along a ravaged river

The Hydrilla Menace: Ripples of hope along a ravaged river

Hydrilla has choked the shallow water of the Mattabesset River in the Connecticut River Watershed, threatening to transform it into a massive mosquito breeding ground.

Photo provided by Connecticut Agricultural Experiment Station
“If we wait five years, we will be able to walk across the river if it’s left
unchecked.” — Bob Petzold, president of Petzold’s Marine Center, on the urgency of halting hydrilla’s rampant spread.

This is the second of a series about invasive aquatic hydrilla and its growing threat to waterbodies and communities in Northwest Connecticut.

CHESTER, Conn. — Bob Petzold has spent the past few summers mowing his marina’s boat slips.

Thick, verdant green mats of notoriously troublesome hydrilla have made it impossible for vessels to enter or exit the channel unless he and his crew mechanically chop, gather and haul away massive piles of the invasive weed, which has clogged the Chester Boat Basin, one of two marinas he owns and operates on the Connecticut River.

Petzold knows that in doing so, he raises the risk of spreading hydrilla fragments that will drift away and repopulate elsewhere. But he has little choice, he said, if his four-generation, family-owned and operated business is to remain afloat.

“It’s a necessary evil,” he said. And an expensive one at that.

“We spend thousands of dollars on outside contractors and we have our own staff remediating it just to keep the channel open,” Petzold explained during an early September visit to his marina.

“When the water is clear, you can almost watch the hydrilla grow. If we wait five years, we will be able to walk across the river if it’s left unchecked.”

Bob Petzold, owner of the Chester Boat Basin on the Connecticut River, points to an area clogged with thick mats of hydrilla prior to a test application of an aquatic herbicide by the U.S. Army Corps of Engineers this summer. Two of his marinas are among five demonstration sites in the Connecticut River Watershed selected for hydrilla research.Photo by Debra A. Aleksinas

The strain of hydrilla in the Connecticut River has been an ongoing concern since its discovery in 2016. It is considered genetically distinct from other known hydrilla populations in the world, and as such, there is limited information available to aid in the development of management strategies to limit its explosive spread.

Kayaks can’t pass through it. Boat motors get tangled by its long strands and stall. Coveted fishing holes have been abandoned by anglers, and swimmers won’t swim in it. Scientists are also addressing concerns about hydrilla’s threat to the ecosystem, including osprey and bald eagles. They fear that the Connecticut River strain harbors cyanobacteria, which produces a neurotoxin deadly to birds of prey.

Rhea Drozenko, river steward for the Connecticut River Conservancy, pointed to the Mattabesset River as an example of hydrilla’s explosive nature. “It created this huge mat, and some native plants couldn’t stand a chance. It created a sea of hydrilla.”
Fortunately for Petzold, and others who own businesses or real estate, enjoy recreational activities or cherish the 200-mile-long river’s aesthetics and ecology, hope is on the horizon.

Petzold’s two marinas, Chester Boat Basin and Portland Boat Works, are among five sites in the Connecticut River Watershed selected for testing of aquatic herbicides this summer as part of an ongoing hydrilla research project by the U.S. Army Corps of Engineers (USACE).

Other test sites include Chapman Pond in East Haddam, Keeney Cove in Glastonbury and Selden Cove in Lyme.
Scientists hope to reduce and control hydrilla, while protecting plants, fish and the long-term health of the river, as well as its $1 billion-plus contribution to Connecticut’s economy.

The results of that research could also bring a sigh of relief inland, where 10 lakes, so far, have been identified as hosts to hydrilla, which is spread between bodies of water primarily by unsuspecting boat owners.

East Twin Lake in Salisbury was the first lake outside of the Connecticut River watershed to identify an infestation late last summer. That number is expected to rise once the Connecticut Agricultural Experiment Station (CAES) concludes its planned inspections of every state-owned boat launch throughout Connecticut.

Invasive aquatic plants in the Connecticut River.Connecticut Agricultural Experiment Station

$100 million in federal funding

In 2021, Sen. Richard Blumenthal (D-Conn.), announced that he is leading an effort to secure $100 million over four years in federal funding for a multistate effort to control hydrilla in the Connecticut River Watershed, and in June, he announced $5 million in federal funding for the USACE demonstration project.

“Senator Blumenthal was here. He pledged his support in getting government funding for this continual battle,” noted Petzold, who referred to hydrilla as “the biggest threat beyond our control” in the nearly 80-year history of his family business.

The funds will also support other goals including preventing hydrilla from spreading into coves, tributaries and inland waters, improving surveillance and detecting new infestations early and responding quickly to control and eradicate new infestations.

In addition, the Connecticut Department of Energy and Environmental Protection (DEEP), through the State Aquatic Invasive Species (AIS) Grant Program, made $500,000 available to municipalities, state agencies and nonprofit organizations to reduce impacts of aquatic species, including hydrilla, on inland waters.

Connecticut awarded approximately $952,700 to 46 projects statewide during the first three years of the AIS Grant Program.

Hope is on the horizon

As stakeholders await the results of the USACE’s demonstration project, already there are encouraging signs.

Petzold pointed to the gently rippling water surrounding the boat basin, which he said had not been that clear during peak boating season for several years. Around the slips, strands of sickly-looking hydrilla floated among dead leaves, victims of herbicidal dosing.

He credited the bipartisan support of lawmakers on the local, state and federal level for going “above and beyond” in supporting and communicating with stakeholders.

“In my mind, it’s made a world of difference. We’ll see what the test studies reveal, but it seems like it is doing the trick here, at least in the basin,” said the marina owner, who credited DEEP and USACE for working together effectively and keeping stakeholders in the loop and respond to their concerns.

“At this point I guess there’s no cure for it, but we have to figure out a way to stop it from spreading and growing as best we can.”
Beth Rye of Chester, who owns two vessels, a 20-foot Grady-White and 35-foot Viking, was ecstatic about being able to navigate in and out of the slips without her boats’ props getting snarled in hydrilla. “It’s gone!” she announced with glee.

Relief for some raises red flags for others, noted Drozenko, particularly when aquatic herbicides are involved.

“There has been a lot of concern about the use of herbicidal treatments, especially in very fragile, ecologically sensitive zones.”

Lakes and ponds, she said, are easier than flowing rivers to treat, as they are more contained and especially if the infestation is caught early, as in Salisbury’s East Twin Lake.

“Whereas if hydrilla moves into the Housatonic River,” the river steward cautioned, ‘it will have the same impact as in our river.”
Coming next: What’s at stake for Salisbury’s six lakes in 2025 and beyond.

Latest News

Robin Wall Kimmerer urges gratitude, reciprocity in talk at Cary Institute

Robin Wall Kimmerer inspired the audience with her grassroots initiative “Plant, Baby, Plant,” encouraging restoration, native planting and care for ecosystems.

Aly Morrissey

Robin Wall Kimmerer, the bestselling author of “Braiding Sweetgrass” and a member of the Citizen Potawatomi Nation, urged a sold-out audience at the Cary Institute of Ecosystem Studies on Friday, March 13, to rethink humanity’s relationship with the natural world through gratitude, reciprocity and responsibility.

Introduced by Cary Institute President Joshua Ginsberg, Kimmerer opened the evening by greeting the audience in Potawatomi, the native language of her ancestors, and grounding the talk in a practice of gratitude.

Keep ReadingShow less

Melissa Gamwell’s handmade touch

Melissa Gamwell’s handmade touch
Melissa Gamwell, hand lettering with precision and care.
Kevin Greenberg
"There is no better feeling than working through something with your own brain and your own hands." —Melissa Gamwell

In an age of automation, Melissa Gamwell is keeping the human hand alive.

The Cornwall, Connecticut-based calligrapher is practicing an art form that’s been under attack by machines for nearly 400 years, and people are noticing. For proof, look no further than the line leading to her candle-lit table at the Stissing House Craft Feast each winter. In her first year there, she scribed around 1,200 gift tags, cards, and hand drawn ornaments.

Keep ReadingShow less
Regional 7 students bring ‘The Addams Family’ to the stage

The cast of “The Addams Family” from Northwest Regional School District No. 7 with Principal Kelly Carroll from Ann Antolini Elementary School in New Hartford at Botelle Elementary in Norfolk.

Monique Jaramillo

Nearly 50 students from across the region are helping bring the delightfully macabre world of “The Addams Family” to life in Northwestern Regional School District No. 7’s upcoming production. The student cast and crew, representing the towns of Barkhamsted, Colebrook, New Hartford and Norfolk, will stage the musical March 27 and 28 at 7 p.m., with a 2 p.m. matinee on March 29 in the school’s auditorium in Winsted.

Based on the iconic characters created by Charles Addams, the musical follows Wednesday Addams, who shocks her famously eccentric family by falling in love with a perfectly “normal” young man. When his parents come to dinner at the Addams’ mansion, two very different families collide, leading to an evening of secrets, surprises and unexpected revelations about love and belonging.

Keep ReadingShow less
google preferred source

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

‘Quilts of Many Colors’ opens at Hunt Library

Garth Kobel, Art Wall Chair, Mary Randolph, Frank Halden, Ruth Giumarro, Project Chair, Maria Bulson, Barbara Lobdell, Sherry Newman, Elizabeth Frey-Thomas, Donna Heinz around “The Green Man.”

Robin Roraback

In honor of National Quilt Day, a tradition established in 1991, Hunt Library’s second annual quilt show, “Quilts of Many Colors,” will open Saturday, March 21, with a reception from 5 to 7 p.m. The quilts, made by members of the Hunt Library Quilters, will be displayed through April 17. All quilts will be for sale, and a portion of each sale goes to the library.

At the center of the exhibit is a quilt the Hunt Library Quilters collaborated on called the “Quilt of Many Colors,” inspired by Dolly Parton’s song”Coat of Many Colors.” Each member of the Hunt Library Quilters made two to four 10-inch squares for the twin-size quilt, with Gail Allyn embroidering “The Green Man” for the center square. The Green Man, a symbol of rebirth, is also a symbol of the library, seen carved in stone at the library’s entrance. One hundred percent of the sale of this quilt benefits the library.

Keep ReadingShow less

New in at Kenise Barnes Fine Art

New in at Kenise Barnes Fine Art

New works on display at Kenise Barnes Fine Art in Kent

D.H. Callahan

Since 2018, Kenise Barnes Fine Art in Kent has been displaying an impressive rotation of works across a range of artists and mediums. On Saturday, March 14, art enthusiasts arrived to see a new exhibition at the gallery featuring a wide variety of new pieces.

Large-scale paintings by David Collins and Melanie Parke alongside small 3-by-3 inch oil-on-panel works by Sally Maca.

Keep ReadingShow less
Trailblazing divorce attorney Harriet Newman Cohen to speak at Norfolk Library

Harriet Newman Cohen

Provided

Harriet Newman Cohen weathered many storms in her five-decade-long journey to become one of the nation’s most celebrated divorce attorneys. Voted one of the top 100 attorneys in New York for many years, Cohen served as president of the New York Women’s Bar Association and has been a champion of divorce reform. She and her co-author, journalist David Feinberg, will give a book talk about her memoir, “Passion and Power: A Life in Three Worlds,” at the Norfolk Library on Sunday, March 22 at 2 p.m.

What began as a personal record of her life, intended for her family, grew into a memoir that journalist Carl Bernstein describes in his endorsement as “wise and riveting.” Born in 1932 in Providence, Rhode Island, to parents who immigrated in 1920 from Ukraine and Poland, Cohen traces the arc of her life and the challenges she faced entering a legal profession that was overwhelmingly male at the time, leading to her success as a maverick divorce attorney fighting for women’s rights and equity in the law. She received her Juris Doctor, cum laude, from Brooklyn Law School in 1974, one year after Roe v. Wade was decided. She is a founding partner of Cohen Stine Kapoor LLP in New York City, a family and matrimonial law firm she formed in 2021, at age 88, with her daughter Martha Cohen Stine and Ankit Kapoor.

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.