Coonservation & Development

Control of Invasive Plants In and Along the River

Phragmites, Judy Preston

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In January 2020, the State of Connecticut began collecting an Aquatic Invasive Species Stamp fee from anyone who registers or renews a registration of a boat, vessel, or jet ski in Connecticut.

Boaters with out-of-state registrations who boat on Connecticut inland waters will also be required to pay this fee. Monies collected go into the Connecticut Lakes, Rivers, and Ponds Preservation account for grants that support the restoration and rehabilitation of lakes, rivers, and ponds.

The legislature in 2022 established an Office of Aquatic Invasive Species within the Connecticut Agricultural Experiment Station.

knotweed near waterways

Gateway Commission Activity

From 2016 to 2018, the Commission successfully partnered with the US Fish and Wildlife Service, the CT Department of Energy and Environmental Protection, The Nature Conservancy and private citizens to rid Ely’s Marsh in Lyme of extensive stands of invasive Phragmites.

In 2018, the Gateway Commission provided a grant of $20,000 to assist in the surveying of invasive in-water invasive plants in the Zone to identify where they are growing. This survey has led to important baseline information that will be used as the efforts to learn how to control and eradicate these invasive plants moves forward.

Resource Information

Hydrilla and Aquatic Invasive Plants

Hydrilla and Aquatic Invasive Plants »

Surveying invasives and a short video outlining the scope of Connecticut’s hydrilla problem.

Phragmites Eradicate

The Problem with Phragmites »

A successful collaborative effort to rid tidal marshes of invasive Phragmites.

invasive species

Phragmites »

Recognizing non-native Phragmites and advice on its control from the Connecticut Agricultural Experiment Station.

up-close with flowering knotweed

Aquatic Invasive Species »

Advice from the CT Department of Energy and Environmental Protection on best practices with links to educational resources

close-up and wide view of invasive

Water Chestnuts in the Connecticut River »

Fact sheet and video from the Connecticut River Conservancy.

granite boulders

100s of Years Quarrying Granite in the Lower Connecticut River Valley

With help from the Connecticut River Gateway Commission, the Middlesex Land Trust preserved a quarry in Haddam Neck. The Brainerd Quarry Preserve offers ridgeline paths with breathtaking views of the Connecticut River and Haddam Meadows State Park. In the 18th century, granite blocks were split from outcroppings and sent down the steep hillside to be shipped via the river to New York, Philadelphia, and even New Orleans for construction.