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The Housatonic River ( ) is an approximately longU.S. Geological Survey. National Hydrography Dataset high-resolution flowline data. The National Map , accessed April 1, 2011 river in western Massachusetts and western Connecticut in the United States. It flows south to southeast, and drains about of southwestern Connecticut into Long Island Sound.
The river's name is derived from the Mohican phrase "usi-a-di-en-uk", translated as "beyond the mountain place" or "river of the mountain place".Housatonic Valley Association. Cornwall Bridge, CT. "History of the Housatonic Valley." Accessed 2015-10-1. It is referred to in the deed by which a group of twelve colonists called "The Proprietors" captured the land now called Sherman and New Fairfield as "Ousetonack". Samuel Orcutt, a 19th-century historian, explained the term's pronunciation as "more properly...Howsatunnuck" and also noted an early spelling in the form of "Oweantinock". Prior to the 18th century, the river was alternatively known as the Pootatuck River. Accounts differ on the origin of this name, with some claiming that Pootatuck is an Algonquian term translating to "river of the falls" while others relate the term was eponymous, reflecting the name of the tribe that had their principal village along the river in the area of Newtown, Connecticut. "Pootatuck River" eventually came to refer a lesser tributary in the Housatonic watershed which empties into the Housatonic River at Sandy Hook, Connecticut.
The river passes through land that was formerly occupied primarily by native people of Algonquian lineage, typically living in villages of two to three hundred families housed in hide wigwams. These native inhabitants burned the forests along the Housatonic Valley in the autumn to keep the underbrush down, a practice which was customary throughout Connecticut prior to European settlement.
One notable native was Chief Squantz of the Schaghticoke tribe, who still hold a portion of the former reservation on the west side of the Housatonic River, in what is now called the town of Kent.
English settlement of the northern Housatonic Valley began in 1725 in Sheffield, Massachusetts. By 1734, Mohicans established the Indian Town of Stockbridge, which grew over 15 years but then failed, with land pressures increasing.
The river was dammed with the advent of industry. In 1900, there were 30 dams on the river in Pittsfield. Many have been removed, but many remain, such as the Woods Pond dam in Lenox, Columbia Mill dam in Lee, Willow Mill dam in South Lee, Glendale dam in Stockbridge, and Rising Pond dam in Great Barrington, Massachusetts.
Five dams impound the river in Connecticut to produce hydroelectricity: the Falls Village, Bulls Bridge, Shepaug Dam, Stevenson and Derby dams. The last three dams form a chain of lakes: Lake Lillinonah, Lake Zoar and Lake Housatonic, from New Milford south to Shelton.
The United States Navy named a ship for the Housatonic River. The has the distinction of being the first ship in history to be sunk by a submarine, the Confederate vessel CSS H.L. Hunley, in 1864.
Inspired by the river during his honeymoon, the American classical music composer Charles Ives wrote "The Housatonic at Stockbridge" as part of his composition Three Places in New England during the 1910s, drawing his text from a poem of the same name by Robert Underwood Johnson. The town of Stockbridge is located in southwestern Massachusetts. The river enters Stockbridge on the east side of town before turning south toward Connecticut.
There was a 1962 American nuclear weapon test of the same name; several such tests used Native American words as codewords.
Between 2005 and 2018 GE completed remediation and restoration of the 10 manufacturing plant areas within the city, and continues to conduct inspection, monitoring and maintenance activities. Additional remediation is planned for the downstream polluted areas of the river. The highest concentrations of PCBs in the Housatonic River are found in Woods Pond in Lenox, Massachusetts, just south of Pittsfield, where they have been measured up to 110 mg/kg in the sediment. About 50% of all the PCBs currently in the river are estimated to be retained in the sediment behind Woods Pond dam. This is estimated to be about 11,000 pounds of PCBs. Former filled oxbows are also polluted.
Birds, such as ducks, and fish that live in and around the river contain significant levels of PCBs and can present health risks if consumed. As of 2025 fish consumption advisories remain in effect for both the Massachusetts and Connecticut portions of the river.
In March 2025 EPA issued a conditional approval for GE's proposed disposal facility for low-level contaminated materials in the Town of Lee. Site preparation activities are expected to start in late 2025. Highly contaminated soil will be removed and shipped to federally approved facilities outside the state.
For most of its extent the watershed is just to the west of the watershed of the lower Connecticut River, and to the east of the
Hudson River Basin. Near the coast, smaller watersheds border it: on the east the Quinnipiac River and Wepawaug River watersheds, and on the west the Norwalk River, Saugatuck River, and Pequonnock River watersheds.
The river's total fall is ( from the confluence of its east and west branches) to Long Island Sound. Its major tributaries in Massachusetts are (heading downstream) the Williams River (in Great Barrington), Green River and Konkapot River (in Ashley Falls). Crossing south into Connecticut, the Housatonic's major tributaries are the Blackberry River (in Canaan), Salmon Creek (below Falls Village), Ten Mile River (above Gaylordsville but originating in New York), Still River (south of New Milford), Shepaug River (at the Bridgewater and Southbury border), Pomperaug River (at Southbury), and Naugatuck River (in Derby). The Naugatuck River is the Housatonic's largest tributary with a contributing watershed of .
Candlewood Lake is a pumped storage facility which is replenished when water is pumped into it from the Housatonic during times of non-peak electrical consumption; the water is then allowed to flow back into the river during peak times to generate electricity.
The Upper Housatonic Valley National Heritage Area is a designated National Heritage Area consisting of an area in the watershed of the upper Housatonic River, extending from Kent, Connecticut, to Lanesborough, Massachusetts, including eight towns in Connecticut and eighteen in Massachusetts.
There are several minor and major dams along the river that form lakes. Most notable are two lakes in Connecticut, Lake Zoar, which borders Monroe, Newtown, Oxford, and Southbury, and Lake Lillinonah. Both lakes are major water-sport recreation outlets for the surrounding towns.
Two of the three lakes formed by the dams are used for rowing by clubs, schools, and to host regattas. Lake Lillinonah is used by the GMS Rowing Center and is host to the GMS Regatta.GMS Rowing Center. New Milford, CT. "About Us/Vision." Lake Housatonic is used by the Yale University Crew Team at the Gilder Boathouse and by the New Haven Rowing Club. It is also host to the Derby Sweeps & Sculls and the Head of the Housatonic.
The Housatonic River is also a popular fly fishing destination. Fly fishing on the Housatonic River has been compared with western rivers and is among the finest for trout in the eastern United States. The most popular area for fly fishing is in Litchfield County, Connecticut, between the dam at Falls Village and Cornwall Bridge. The sections between Kent School and Bulls Bridge are also known for quality fly fishing. The area below Bulls Bridge thru Gaylordsville and the power plant in New Milford is dangerous and not recommended for swimming or entering the water as the currents are quite strong. Fish consumption advisories remain in effect for the Housatonic River in Connecticut as of 2025.
The Appalachian Trail follows the river along this section from the Bulls Bridge covered wooden bridge near Kent to Falls Village.
Industrialization
The river has been a source of power for paper, iron, textiles, and electricity industries. At Great Barrington, a grist mill built by David Ingersoll in 1739 used the river for power. The paper industry grew using the river's power from circa 1800.
Covered wooden bridges
Three wooden covered bridges cross the Housatonic River. Two are in Connecticut: one known as Bull's Bridge, which spans the river between Gaylordsville and Kent, and another at Cornwall, known as the West Cornwall Covered Bridge. Reinforced with present-day materials, both bridges carry normal vehicle traffic, albeit in only one direction at a time. The third bridge, Old Covered Bridge located in Sheffield, Massachusetts, was destroyed by fire and rebuilt in 1998; it is now open only to foot traffic. Massachusetts Covered Bridges - Upper Sheffield Bridge . Coveredbridgesite.com. Retrieved on 2013-07-15.
Cultural references
Lydia Sigourney's poem is in her volume, Scenes in my Native Land, 1845, where it accompanied by descriptive text on the river and its neighbourhood.
UFO sighting and monument
In 1969, nine-year-old Thom Reed and his family claimed to see a bright light rise from the Housatonic River, then found themselves inside "what appeared to be an airplane hangar," where they saw creatures that "resembled large insects." Supporters of the family erected a memorial to the incident at the Old Covered Bridge in Sheffield, Massachusetts, in 2015. The 5,000-pound memorial was removed by the town in 2019. The incident featured in a 2020 episode of Unsolved Mysteries on Netflix.
Ecology and wildlife
Historically, the Housatonic River and its Naugatuck River tributary hosted the southernmost spawning runs of the Atlantic salmon ( Salmo salar). The Salmon Creek tributary of the Housatonic River may have been named for this salmonid, which can reach up to .
Pollution
PCBs
From circa 1932 until 1977, the river received PCB water pollution discharges from the General Electric (GE) plant at Pittsfield, Massachusetts. The U.S. Environmental Protection Agency (EPA) designated the Pittsfield plant and several miles of the Housatonic as a Superfund site in 1997, and ordered GE to remediate the site. EPA and GE began a cleanup of the area in 1999.U.S. Environmental Protection Agency (EPA). Boston, MA. GE/Housatonic River Site in New England: Site History and Description." 2009-11-12. Most of the PCBs used in the United States during this period were made by Monsanto. Aroclor 1254 and Aroclor 1260, made by Monsanto, was a primary contaminant of the pollution in the Housatonic River. Although the water quality has improved in recent decades, and some remediation has taken place,EPA. Housatonic River 1½ Mile - Overview the river continues to be contaminated by PCBs.deFur, Peter L. (2004). "Housatonic River Ecological Risk Assessment." Environmental Stewardship Concepts, Richmond, VA. Presentation at EPA Public Peer Review Meeting, 2004-01-13
Negotiations regarding how to clean up the contaminated areas south of Pittsfield continued for many years following the initial Superfund site designations, involving GE, EPA, local governments, citizen groups and other stakeholders. In February 2020 EPA announced a settlement agreement involving GE, EPA and most of the concerned parties, to remove contaminated sediment from the river. Following a public comment period, EPA issued a permit in December 2020 for the final cleanup phase. In 2021 two of the citizen groups that were parties to the settlement filed an appeal of the permit, criticizing the design of the planned landfill. In February 2022 the US Environmental Appeals Board (EAB) denied the permit appeal. Two citizen groups appealed the EAB decision to the First Circuit Court of Appeals, and in July 2023 the court rejected the plaintiffs' challenge.
Mercury
The Connecticut segment of the river is polluted with mercury levels far beyond background levels, starting at the confluence with the Still River. The hat manufacturing industry of Danbury, Connecticut, which operated from the 19th to the mid-20th century, was the source of most of this mercury pollution, from mercury nitrate used in the felting process. In the 21st century, the mercury remains in the river sediment and flows downstream, especially during storm events. High mercury levels are measured in the sediment at the outflow delta of the Housatonic River into Long Island Sound.
Watershed and course
The Housatonic River Drainage basin drains in western Connecticut and Massachusetts and eastern New York. The Housatonic rises from four sources in far western Massachusetts in the Berkshire Mountains near the city of Pittsfield. It flows southward through western Massachusetts through the Berkshires and into western Connecticut, and empties into the Long Island Sound between the cities of Stratford and Milford, forming a border between Connecticut's Fairfield County and New Haven County, respectively. It includes 83 towns.
Housatonic Valley region
The Greater Danbury metropolitan area in Western Connecticut is also known as the Housatonic Valley Region.
Recreation
The Housatonic River is a popular whitewater paddling destination beginning at Falls Village, Connecticut, and continuing to Gaylordsville. Most of the river is quickwater and Class I whitewater with long sections of Class II-III whitewater. A deadly and extreme Class VI resides at Great Falls in Canaan (Falls Village) and is most likely not able to be paddled. The most dangerous and difficult section that is navigable is by Bulls Bridge, with Class V whitewater.
Major crossings
As U.S. Route 7 runs along the Housatonic River Valley between Pittsfield and New Milford, it crosses the Housatonic several times.
Massachusetts Berkshire US 20 in Lee I-90 in Lee Route 102 in Lee US 7 in Stockbridge Route 183 in Housatonic US 7 in Great Barrington US 7 in Ashley Falls Route 7A in Ashley Falls Connecticut Litchfield US 44 in North Canaan US 7 in Falls Village Route 128 in West Cornwall
(West Cornwall Covered Bridge)US 7/Route 4 in Cornwall Bridge Route 341 in Kent Bulls Bridge Road in South Kent
(Bull's Bridge)US 7 in Gaylordsville US 202 in New Milford Litchfield/
Fairfield LineRoute 133 in Brookfield Fairfield/
New Haven LineI-84/ US 6 in Southbury Route 34 at Lake Zoar
(Stevenson Dam Bridge, Stevenson Dam)(Lake Housatonic Dam) State Road 712 (Derby–Shelton Bridge) CSX/Housatonic Railroad bridge Route 8 in Shelton/Derby (Commodore Isaac Hull Memorial Bridge) Route 15/ Merritt Parkway in Milford/Stratford I-95 CT Turnpike in Milford/Stratford US 1 in Milford/Stratford
See also
Citations
Notes
External links
Categories: Long Island Sound, Milford, Connecticut, Rivers Of Berkshire County, Massachusetts, Rivers Of Fairfield County, Connecticut, Rivers Of Litchfield County, Connecticut, Rivers Of New Haven County, Connecticut, Connecticut Placenames Of Native American Origin, Massachusetts Placenames Of Native American Origin, Rowing Venues In The United States, Stratford, Connecticut, Rivers Of Massachusetts, Rivers Of Connecticut, Wild And Scenic Rivers Of The United States
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