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The Charles River ( Massachusett: ''Quinobequin)'' (sometimes called the River Charles or simply the Charles) is an river in eastern Massachusetts. It flows northeast from Hopkinton to Boston along a highly meandering route, that doubles back on itself several times and travels through 23 cities and towns before reaching the Atlantic Ocean. The indigenous Massachusett named it ''Quinobequin'', meaning "meandering".


Hydrography

The Charles River is fed by approximately 80 streams and several major aquifers as it flows , starting at Teresa Road just north of Echo Lake () in Hopkinton, passing through 23 cities and towns in eastern Massachusetts before emptying into
Boston Harbor Boston Harbor is a natural harbor and estuary of Massachusetts Bay, and is located adjacent to the city of Boston, Massachusetts. It is home to the Port of Boston, a major shipping facility in the northeastern United States. History ...
. Thirty-three lakes and ponds and 35 municipalities are entirely or partially part of the Charles River drainage basin. Despite the river's length and relatively large drainage area (), its source is only from its mouth, and the river drops only from source to sea. The Charles River watershed contains more than of protected wetlands, referred to as Natural Valley Storage. These areas are important in preventing downstream flooding and providing natural habitats to native species. Harvard University,
Brandeis University , mottoeng = "Truth even unto its innermost parts" , established = , type = Private research university , accreditation = NECHE , president = Ronald D. Liebowitz , ...
,
Boston University Boston University (BU) is a Private university, private research university in Boston, Massachusetts. The university is nonsectarian, but has a historical affiliation with the United Methodist Church. It was founded in 1839 by Methodists with ...
, and the
Massachusetts Institute of Technology The Massachusetts Institute of Technology (MIT) is a private land-grant research university in Cambridge, Massachusetts. Established in 1861, MIT has played a key role in the development of modern technology and science, and is one of the ...
are located along the Charles River. Near its mouth, it forms the border between downtown Boston and
Cambridge Cambridge ( ) is a College town, university city and the county town in Cambridgeshire, England. It is located on the River Cam approximately north of London. As of the 2021 United Kingdom census, the population of Cambridge was 145,700. Cam ...
and Charlestown. The river opens into a broad basin and is lined by the parks of the
Charles River Reservation The Charles River Reservation is a urban preserve and public recreation area located along the banks of the Charles River in Boston, Cambridge, Watertown, and Newton, Massachusetts. The reservation is managed by the Massachusetts Department of ...
. On the
Charles River Esplanade The Charles River Esplanade of Boston, Massachusetts, is a state-owned park situated in the Back Bay area of the city, on the south bank of the Charles River Basin. Description The limited-access parkway Storrow Drive forms the southern bound ...
stands the
Hatch Shell The Edward A. Hatch Memorial Shell (commonly referred to as the "Hatch Shell") is an outdoor concert venue on the Charles River Esplanade in the Back Bay section of Boston, Massachusetts. Built in 1939–1940, it is one of the city's prominent ...
, where concerts are given in summer evenings. The basin is especially known for its Independence Day celebration. The middle section of the river between the
Watertown Dam The Watertown Dam spans the Charles River upstream from the Watertown Bridge near Watertown Square in Watertown, Massachusetts. The dam is located where the Charles River tidal estuary historically ended (the tides no longer reach this point ...
and Wellesley is partially protected by the properties of the
Upper Charles River Reservation The Upper Charles River Reservation is a Massachusetts state park encompassing portions of the banks of the Charles River between the Watertown Dam in Watertown and Riverdale Park in Dedham and the West Roxbury neighborhood of Boston. The park ...
and other state parks, including the
Hemlock Gorge Reservation Hemlock Gorge Reservation is a state-owned, public recreation area and urban wild comprising on the Charles River in Newton and Needham, Massachusetts. The reservation is managed by the Massachusetts Department of Conservation and Recreation. ...
,
Cutler Park Cutler Park is a state-owned nature preserve and public recreation area that lies between Route 128/I-95 and the Charles River in Needham, Massachusetts. The state park's contain the largest remaining freshwater marsh on the middle Charles Ri ...
, and the
Elm Bank Reservation The Gardens at Elm Bank, home of Massachusetts Horticultural Society, occupies of Elm Bank Reservation, a recreational area of woodlands, fields, and former estate property on the Charles River managed by the Massachusetts Department of Conserva ...
. A detailed depth chart of the lower basin of the Charles River, from near the Watertown Dam to the New
Charles River Dam The Charles River Dam is a flood control structure on the Charles River in Boston, Massachusetts, located just downstream of the Leonard P. Zakim Bunker Hill Memorial Bridge, near Lovejoy Wharf, on the former location of the Warren Bridge. His ...
, has been created by a partnership between the MIT Sea Grant College Program and th
Charles River Alliance of Boaters
(CRAB). Online and hardcop

are available as a public service.


Recreation

The river is busy, apart from the winter months, with
rowing Rowing is the act of propelling a human-powered watercraft using the sweeping motions of oars to displace water and generate reactional propulsion. Rowing is functionally similar to paddling, but rowing requires oars to be mechanically ...
, sculling, canoeing, kayaking,
paddleboarding Paddleboarding is a water sport in which participants are propelled by a swimming motion using their arms while lying or kneeling on a paddleboard or surfboard in the ocean or other body of water. This article refers to traditional prone or kneeli ...
, dragonboating, and
sailing Sailing employs the wind—acting on sails, wingsails or kites—to propel a craft on the surface of the ''water'' (sailing ship, sailboat, raft, windsurfer, or kitesurfer), on ''ice'' (iceboat) or on ''land'' (land yacht) over a chosen cou ...
, both recreational and competitive. Most of the watercraft activity occurs from the Museum of Science to the center of
Watertown Watertown may refer to: Places in China In China, a water town is a type of ancient scenic town known for its waterways. Places in the United States *Watertown, Connecticut, a New England town **Watertown (CDP), Connecticut, the central village ...
, above which is a dam. These see motorboat traffic from two marinas and a boat ramp near Watertown, as well as two marinas downstream and boats entering from Boston Harbor through an old lock next to the Museum of Science. A canoe and kayak ADA-accessible launch at
Magazine Beach Magazine Beach is an American riverside park in Cambridge, Massachusetts. It is located on the left bank of the Charles River, across Memorial Drive from Cambridgeport, and opposite Agganis Arena and other Boston University facilities on the far ...
in Cambridge opened 23 September 2019. The Charles is renowned as a rowing and sculling locale, with many boathouses and the three-mile
Head of the Charles Regatta The Head of the Charles Regatta, also known as HOCR, is a rowing (sport), rowing head race held on the penultimate complete weekend of October (i.e., on the Friday that falls between the 16th and the 22nd of the month, and on the Saturday an ...
, the world's largest long-distance rowing regatta. The major boathouses, starting up stream near Watertown, are Community Rowing, Inc., housing competitive, recreational, and learning programs along with the Boston College Crew; Northeastern University's Henderson; Cambridge Boat Club; Newell, home of Harvard Men's Rowing; Weld, home of Harvard Women's Rowing; Riverside Boat Club; Boston University's DeWolfe; Massachusetts Institute of Technology's Pierce; and, in the Lower Basin, Union Boat Club. The Lower Basin between the
Longfellow Henry Wadsworth Longfellow (February 27, 1807 – March 24, 1882) was an American poet and educator. His original works include "Paul Revere's Ride", ''The Song of Hiawatha'', and ''Evangeline''. He was the first American to completely transl ...
and Harvard (Massachusetts Avenue) bridges has the sailing docks of Community Boating, the Harvard University Sailing Center, and the MIT Sailing Pavilion. Sailboat, kayak, and paddleboard rentals are available at the Boston University Sailing Pavilion. Charles River Canoe and Kayak has four locations along the Charles, renting kayaks, canoes, and paddleboards. Duck Boats regularly enter the Charles near the Museum of Science and river tour boat excursions depart from a lagoon near the Museum. In early June, the Hong Kong Boston Dragon Boat Festival is held in
Cambridge Cambridge ( ) is a College town, university city and the county town in Cambridgeshire, England. It is located on the River Cam approximately north of London. As of the 2021 United Kingdom census, the population of Cambridge was 145,700. Cam ...
, near the Weeks Footbridge. The
Charles River Bike Path The Charles River Bike Path is a mixed-use path in the Boston, Massachusetts area. It is named after the cardiologist Paul Dudley White, a prominent advocate of preventive medicine. His research led him to proclaim frequently "''I'd like to put ...
runs along the banks of the Charles, starting at the Museum of Science and passing the campuses of MIT, Harvard and Boston University. The path is popular with runners and bikers. Many runners gauge their distance and speed by keeping track of the mileage between the bridges along the route. After two decades of water quality improvement efforts spearheaded by the Environmental Protection Agency, on July 13, 2013,
swimming Swimming is the self-propulsion of a person through water, or other liquid, usually for recreation, sport, exercise, or survival. Locomotion is achieved through coordinated movement of the limbs and the body to achieve hydrodynamic thrust that r ...
for the general public was officially permitted for the first time in more than 50 years. Fishing from the banks or small craft is common along the Charles. With catches from the Charles from Natick to Boston the public is advised not to eat carp, and for non-pregnant, non-nursing adults, to limit large mouth bass consumption to no more than twice a month. Children and pregnant or nursing women should eat nothing from the Charles River. Both cautions are due to PCB and pesticide contamination. Up river from Natick, similar advisories are in effect for all fish on account of mercury,
chlordane Chlordane, or chlordan, is an organochlorine compound that was used as a pesticide. It is a white solid. In the United States, chlordane was used for termite-treatment of approximately 30 million homes until it was banned in 1988. Chlordane was ...
, and
DDT Dichlorodiphenyltrichloroethane, commonly known as DDT, is a colorless, tasteless, and almost odorless crystalline chemical compound, an organochloride. Originally developed as an insecticide, it became infamous for its environmental impacts. ...
in the fish.


History

]


Pre-colonial

Long before European settlers named and shaped the Charles, Native Americans living in New England made the river a central part of their lives. At the time of European colonization in the early 1600s, settlements of
Massachusett people The Massachusett were a Native American tribe from the region in and around present-day Greater Boston in the Commonwealth of Massachusetts. The name comes from the Massachusett language term for "At the Great Hill," referring to the Blue Hills ...
were present along the river at '' Nonantum'' in current day Newton and ''Pigsgusset'' in current day
Watertown Watertown may refer to: Places in China In China, a water town is a type of ancient scenic town known for its waterways. Places in the United States *Watertown, Connecticut, a New England town **Watertown (CDP), Connecticut, the central village ...
. Prior to the arrival of Puritan colonists in the 1620s,
Captain John Smith John Smith (baptized 6 January 1580 – 21 June 1631) was an English soldier, explorer, colonial governor, Admiral of New England, and author. He played an important role in the establishment of the colony at Jamestown, Virginia, the first pe ...
of Jamestown explored and mapped the coast of New England, originally naming the Charles River the Massachusetts River, which he derived from the
Massachusett people The Massachusett were a Native American tribe from the region in and around present-day Greater Boston in the Commonwealth of Massachusetts. The name comes from the Massachusett language term for "At the Great Hill," referring to the Blue Hills ...
living in the region, not from their actual name for the river, ''Quinobequin''. When Smith presented his map to King Charles I he suggested that the king should feel free to change any of the "barbarous names" for "English" ones. The king made many such changes, but only four survive today, one of which is the Charles River which Charles named for himself. The native name for the Charles River was ''Quinobequin'', possibly meaning "meandering" in Massachusett from ''quinnuppe'' or "it turns." Other sources state this name was transferred from the Kennebec River in Maine to Cambridge by Prince Charles at the time he renamed this river in his name. Still another explanation is that ''Quinobequin'' was a descriptive term for any long body of water for Eastern Algonquin peoples, which European explorers and settlers interpreted as a local proper name. Examples include not only the '' Kennebec'' ("long water place") River and '' Kennebunk'' in Maine, but also the '' Quinebaug'' ("long pond") River, '' Quinapoxet'' ("at the little long pond") River, and ''
Quinnipiac Quinnipiac is the English name for the Eansketambawg (meaning "original people"; ''cf.'' Ojibwe: '' Anishinaabeg'' and Blackfoot: ''Niitsítapi''), a Quiripi-speaking Native American nation of the Algonquian family who inhabited the ''Wamp ...
'' ("long pond") River elsewhere in present day Massachusetts, Connecticut, and New Hampshire.


Industrial

As native populations were driven out by European settlers, the Charles River became an early center for hydropower and manufacturing in North America. Although in portions of its length, the Charles drops slowly in elevation and has relatively little current, early settlers in Dedham, Massachusetts, found a way to use the Charles to power mills. In 1639, the town dug a canal from the Charles to a nearby brook that drained to the
Neponset River The Neponset River is a river in eastern Massachusetts in the United States. Its headwaters are at the Neponset Reservoir in Foxborough, near Gillette Stadium. From there, the Neponset meanders generally northeast for about to its mouth at ...
. By this action, a portion of the Charles's flow was diverted, providing enough current for several mills. The new canal and the brook together are now called
Mother Brook Mother Brook is a stream that flows from the Charles River in Dedham, Massachusetts, to the Neponset River in the Hyde Park section of Boston, Massachusetts. Mother Brook was also known variously as East Brook and Mill Creek in earlier times. ...
. The canal is regarded as the first industrial canal in North America. It remains in use for
flood control Flood control methods are used to reduce or prevent the detrimental effects of flood waters."Flood Control", MSN Encarta, 2008 (see below: Further reading). Flood relief methods are used to reduce the effects of flood waters or high water level ...
. Waltham was the site of the first fully integrated textile factory in America, built by
Francis Cabot Lowell Francis Cabot Lowell (April 7, 1775 – August 10, 1817) was an American businessman for whom the city of Lowell, Massachusetts, is named. He was instrumental in bringing the Industrial Revolution to the United States. Early life Francis Cabot ...
in 1814, and by the 19th century the Charles River was one of the most industrialized areas in the United States. Its
hydropower Hydropower (from el, ὕδωρ, "water"), also known as water power, is the use of falling or fast-running water to produce electricity or to power machines. This is achieved by converting the gravitational potential or kinetic energy of a w ...
soon fueled many mills and factories. By the century's end, 20 dams had been built across the river, mostly to generate power for industry. An 1875 government report listed 43 mills along the tidal estuary from
Watertown Dam The Watertown Dam spans the Charles River upstream from the Watertown Bridge near Watertown Square in Watertown, Massachusetts. The dam is located where the Charles River tidal estuary historically ended (the tides no longer reach this point ...
to Boston Harbor. From 1816 to 1968, the
U.S. Army The United States Army (USA) is the land service branch of the United States Armed Forces. It is one of the eight U.S. uniformed services, and is designated as the Army of the United States in the U.S. Constitution.Article II, section 2, cl ...
operated a gun and ammunition storage and later production facility known as the
Watertown Arsenal The Watertown Arsenal was a major American arsenal located on the northern shore of the Charles River in Watertown, Massachusetts. The site is now registered on the ASCE's List of Historic Civil Engineering Landmarks and on the US Nationa ...
. While it was key to many of the nation's war efforts over its several decades in operation, not the least of which being the
American Civil War The American Civil War (April 12, 1861 – May 26, 1865; also known by other names) was a civil war in the United States. It was fought between the Union ("the North") and the Confederacy ("the South"), the latter formed by states ...
and
World War I World War I (28 July 1914 11 November 1918), often abbreviated as WWI, was one of the deadliest global conflicts in history. Belligerents included much of Europe, the Russian Empire, the United States, and the Ottoman Empire, with fightin ...
, its location in
Watertown Watertown may refer to: Places in China In China, a water town is a type of ancient scenic town known for its waterways. Places in the United States *Watertown, Connecticut, a New England town **Watertown (CDP), Connecticut, the central village ...
so near the Charles did great environmental harm. The arsenal was declared a
Super Fund Superfund is a United States federal environmental remediation program established by the Comprehensive Environmental Response, Compensation, and Liability Act of 1980 (CERCLA). The program is administered by the Environmental Protection Agency ...
site, and after its closure by the government it had to be cleaned at significant expense before it could be safely used again for other purposes. Likewise, the many factories and mills along the banks of the Charles supported a buoyant economy in their time but left a legacy of massive pollution. For several years, the Charles River Speedway operated along part of the river.


Creation of the modern Boston-Cambridge basin

Today's Charles River basin between
Boston Boston (), officially the City of Boston, is the state capital and most populous city of the Commonwealth of Massachusetts, as well as the cultural and financial center of the New England region of the United States. It is the 24th- mo ...
and Cambridge is almost entirely a work of human design. Owen A. Galvin was appointed head of the Charles River Improvement Commission by Governor William E. Russell in 1891. Their work led to the design initiatives of noted landscape architects Charles Eliot and Arthur Shurcliff, both of whom had apprenticed with
Frederick Law Olmsted Frederick Law Olmsted (April 26, 1822August 28, 1903) was an American landscape architect, journalist, social critic, and public administrator. He is considered to be the father of landscape architecture in the USA. Olmsted was famous for co ...
and
Guy Lowell Guy Lowell (August 6, 1870 – February 4, 1927), was an American architect and landscape architect. Biography Born in Boston, Lowell was the son of Mary Walcott (Goodrich) and Edward Jackson Lowell, and a member of Boston's well-known Lowe ...
. This designed landscape includes over 20 parks and natural areas along of shoreline, from the New Dam at the Charlestown Bridge to the dam near Watertown Square. Eliot first envisioned today's river design in the 1890s, an important model being the layout of the
Alster The Alster () is a right tributary of the Elbe river in Northern Germany. It has its source near Henstedt-Ulzburg, Schleswig-Holstein, flows somewhat southwards through much of the Free and Hanseatic City of Hamburg and joins the Elbe in central ...
basin in
Hamburg (male), (female) en, Hamburger(s), Hamburgian(s) , timezone1 = Central (CET) , utc_offset1 = +1 , timezone1_DST = Central (CEST) , utc_offset1_DST = +2 , postal ...
, but major construction began only after Eliot's death with the damming of the river's mouth at today's
Boston Museum of Science The Museum of Science (MoS) is a science museum and indoor zoo in Boston, Massachusetts, located in Science Park, a plot of land spanning the Charles River. Along with over 700 interactive exhibits, the museum features a number of live presentat ...
, an effort led by James Jackson Storrow. The new dam, completed in 1910, stabilized the water level from Boston to Watertown, eliminating the existing mud flats, and a narrow embankment was built between Leverett Circle and Charlesgate. After Storrow's death, his widow Mrs. James Jackson Storrow donated $1 million toward the creation of a more generously landscaped park along the Esplanade; it was dedicated in 1936 as the Storrow Memorial Embankment. This also enabled the construction of many public docks in the Charles River Basin. In the 1950s a highway,
Storrow Drive Storrow Drive, officially James Jackson Storrow Memorial Drive, is a major crosstown parkway in Boston, Massachusetts, running east–west along the southern bank of the Charles River. It is restricted to cars; trucks and buses are not perm ...
, was built along the edge of the Esplanade to connect Charles Circle with Soldiers Field Road, and the Esplanade was enlarged on the water side of the new highway. The Inner Belt highway was proposed to cross the Charles River at the Boston University Bridge, but its construction was canceled in the 1970s.


History of pollution and remediation efforts

As sewage,
industrial wastewater Industrial wastewater treatment describes the processes used for Wastewater treatment, treating wastewater that is produced by industries as an undesirable by-product. After treatment, the treated industrial wastewater (or effluent) may be reuse ...
and
urban runoff Urban runoff is surface runoff of rainwater, landscape irrigation, and car washing created by urbanization. Impervious surfaces (roads, parking lots and sidewalks) are constructed during land development. During rain , storms and other precip ...
flowed freely into the river from the surrounding city, the Charles River became well known for its high level of
pollutants A pollutant or novel entity is a substance or energy introduced into the environment that has undesired effects, or adversely affects the usefulness of a resource. These can be both naturally forming (i.e. minerals or extracted compounds like o ...
, gaining such notoriety that by 1955,
Bernard DeVoto Bernard Augustine DeVoto (January 11, 1897 – November 13, 1955) was an American historian, conservationist, essayist, columnist, teacher, editor, and reviewer. He was the author of a series of Pulitzer-Prize-winning popular histories of the Ame ...
wrote in '' Harper's Magazine'' that the Charles was "foul and noisome, polluted by offal and industrious wastes, scummy with oil, unlikely to be mistaken for water." Fish kills and submerged vehicles were a common sight, along with toxic chemical plumes that colored parts of the river pink and orange.
The Standells The Standells are an American garage rock band from Los Angeles, California, formed in the 1960s, who have been referred to as a "punk band of the 1960s", and said to have inspired such groups as the Sex Pistols and Ramones. They are best kno ...
sang about the sorry state of the Charles in their 1965 song "
Dirty Water "Dirty Water" is a song by the American rock band The Standells, written by their producer Ed Cobb. The song is a mock paean to the city of Boston, Massachusetts, and its then-famously polluted Boston Harbor and Charles River. History Accordi ...
". Once popular with swimmers, awareness of the river's high pollution levels forced the state to shut down several popular swimming areas, including Cambridge's Magazine Beach and Gerry Landing public beaches. Efforts to clean up the river and restore it to a state where swimming and fishing would be acceptable began as early as the 1960s, and the program to clean up the Charles for good took shape in 1965 with the creation of the Charles River Watershed Association. In 1978, a new
Charles River Dam The Charles River Dam is a flood control structure on the Charles River in Boston, Massachusetts, located just downstream of the Leonard P. Zakim Bunker Hill Memorial Bridge, near Lovejoy Wharf, on the former location of the Warren Bridge. His ...
was constructed downstream from the Science Museum site to keep
salt water Saline water (more commonly known as salt water) is water that contains a high concentration of dissolved salts (mainly sodium chloride). On the United States Geological Survey (USGS) salinity scale, saline water is saltier than brackish wat ...
out of the basin. In 1995, the
United States Environmental Protection Agency The Environmental Protection Agency (EPA) is an independent executive agency of the United States federal government tasked with environmental protection matters. President Richard Nixon proposed the establishment of EPA on July 9, 1970; it ...
declared a goal of making the river swimmable by 2005. In 1996, Governor William Weld plunged, fully clothed, into the river to prove his commitment to cleaning up the river. On November 12, 2004, Christopher Swain became the first person to swim the Charles River's entire length, in an effort to raise public awareness of the river's environmental health. In July 2007, the river hosted the Charles River Masters Swim Race, the first sanctioned race in the Charles in over five decades. A combination of public and private initiatives helped drastically lower levels of pollutants by focusing on eliminating
combined sewer overflow A combined sewer is a type of gravity sewer with a system of pipes, tunnels, pump stations etc. to transport sewage and urban runoff together to a sewage treatment plant or disposal site. This means that during rain events, the sewage gets dil ...
s and stormwater
runoff Runoff, run-off or RUNOFF may refer to: * RUNOFF, the first computer text-formatting program * Runoff or run-off, another name for bleed, printing that lies beyond the edges to which a printed sheet is trimmed * Runoff or run-off, a stock marke ...
. Since Weld's stunt, the river's condition has improved dramatically, although it was not deemed entirely swimmable by 2005. The
Conservation Law Foundation Conservation Law Foundation (CLF) is an environmental advocacy organization based in New England. Since 1966, CLF's mission has been to advocate for New England's environment and its communities. CLF's advocacy work takes place across five integr ...
opposes the permit given to
Mirant GenOn Energy Holdings, formerly Mirant Corporation, was a subsidiary of GenOn Energy, and is now a part of NRG Energy. The company was spun off from its former parent, Southern Company, on April 2, 2001. The company was merged into GenOn Energy ...
for the
Veolia Veolia Environnement S.A., branded as Veolia, is a French transnational company with activities in three main service and utility areas traditionally managed by public authorities – water management, waste management and energy services. It pr ...
Energy North America Kendall Cogeneration Station, an electricity plant near
Kendall Square Kendall Square is a neighborhood in Cambridge, Massachusetts. The square itself at the intersection of Main Street and Broadway. It also refers to the broad business district east of Portland Street, northwest of the Charles River, north of MIT ...
, charging that the water it releases causes blooms of hazardous
microorganism A microorganism, or microbe,, ''mikros'', "small") and ''organism'' from the el, ὀργανισμός, ''organismós'', "organism"). It is usually written as a single word but is sometimes hyphenated (''micro-organism''), especially in olde ...
s because of its warm temperature. The water quality of the Charles River is often at its worst after a large rainfall because of pollutants carried by runoff, and sewage overflows. For 2011, the EPA reported that the Charles met state bacterial standards for boating and swimming 96% and 89% of the time on dry days, and 74% and 35% of the time on wet days, respectively. Overall boatability and swimability of 82% and 54% in 2011 compare with 39% and 19% in 1995. In June 2018, the Environmental Protection Agency graded the river's 2017 bacterial water quality "A−". A study published in the ''Journal of the American Water Resources Association'' in April 2008 and completed by researchers at Northeastern University, found high concentrations of '' E. coli''
bacteria Bacteria (; singular: bacterium) are ubiquitous, mostly free-living organisms often consisting of one Cell (biology), biological cell. They constitute a large domain (biology), domain of prokaryotic microorganisms. Typically a few micrometr ...
in the Charles River after a long period of no rain. Using a mathematical model, the researchers then determined that two major tributaries, the Stony Brook and Muddy River, are the predominant sources of ''E. coli'' in the lower Charles River. Starting in 2007, the Charles River Swimming Club has organized an annual race for its members, but obtains a special permit and must monitor water quality and rainfall in the days leading up to the race. The "first public swim" in the Charles since the 1950s was conducted on July 13, 2013, by the Charles River Conservancy,The Charles River Conservancy was founded by Renata von Tscharner. Charles River Watershed Association (CRWA), Esplanade Association, and DCR. Both the annual race and the Conservancy event have been held in deep water with swimmers jumping in off a dock, to avoid the toxic sediments on the bottom of the river that still make beach swimming dangerous. Swimming without a permit is punishable by a fine up to $250.


Wildlife


Fish

The Charles River is home to a wide range of freshwater fish species and some diadromous species. There are over 25 species able to be found in the Charles and some of the most common freshwater fish include the Redfin Pickerel, Largemouth Bass, Golden Shiner, Yellow Perch, a variety of sunfish (such as Bluegills, Redbreast Sunfish, and Pumpkinseeds), and some species of catfish (Yellow Bullhead, Brown Bullhead, White Bullhead). The
diadromous fish Fish migration is mass relocation by fish from one area or body of water to another. Many types of fish migrate on a regular basis, on time scales ranging from daily to annually or longer, and over distances ranging from a few metres to thousan ...
(fish that spend parts of their lives in fresh and salt water) that can be found in the Charles are mostly anadromous species (fish that migrate from sea to freshwater to spawn). These include the Alewife Herring, American Shad, White Perch, and Striped Bass. The only catadromous species (fish that migrate from freshwater to sea to spawn) in the Charles is the American Eel. With the many initiatives to improve the health of the river in the years since the formation of the CRWA, the health and variety of fish in the river have greatly improved. One example of this is the reintroduction of American Shad into the Charles. American Shad used to be one of the most common species in the river until the 1800s when population numbers decreased because of new dams and poor water quality. With improved water quality and partial dam breaches created in modern times, the CRWA, along with the Massachusetts Division of Marine Fisheries and the
U.S. Fish and Wildlife Service The United States Fish and Wildlife Service (USFWS or FWS) is an agency within the United States Department of the Interior dedicated to the management of fish, wildlife, and natural habitats. The mission of the agency is "working with othe ...
, targeted American Shad as a species to revive in the river’s ecosystem. In the years from 2006 to 2011, the river was stocked with millions of shad fry. Research showed that these shad were in fact returning to the river to spawn, a testament to the improved health of the river.


Gallery

File:Charles River from Nonantum (January 2017).jpg, View of the Charles River, Community Rowing, Inc. and
Boston Boston (), officially the City of Boston, is the state capital and most populous city of the Commonwealth of Massachusetts, as well as the cultural and financial center of the New England region of the United States. It is the 24th- mo ...
from Nonantum. File:Charles River Cambridge USA.jpg, The Charles River from the Boston side, facing
Weld Boathouse Weld Boathouse is a Harvard-owned building on the bank of the Charles River in Cambridge, Massachusetts. It is named after George Walker Weld, who bequeathed the funds for its construction. History Weld Boathouse is the second of two boathou ...
and the main campus of Harvard University in
Cambridge Cambridge ( ) is a College town, university city and the county town in Cambridgeshire, England. It is located on the River Cam approximately north of London. As of the 2021 United Kingdom census, the population of Cambridge was 145,700. Cam ...
. File:Newton upper falls.jpg, View of Charles River at Newton Upper Falls File:Echo Bridge.JPG, Charles River under Echo Bridge in Newton File:Charles River Medfield-Millis.JPG, Charles River at Medfield-Millis town line File:View of Charles River Basin.agr.JPG, Charles River basin from an office tower in Boston. File:USA-Charles River Esplanade1.jpg, Charles River Esplanade, 2013 File:USA-Charles River Esplanade6.JPG, Charles River Esplanade, 2013 File:Boston from BU Bridge WADE.jpg, View of the Charles River and Downtown Boston from the Boston University Bridge File:Weeks Footbridge Cambridge, MA.jpg, John W. Weeks Bridge


See also

*
Head of the Charles Regatta The Head of the Charles Regatta, also known as HOCR, is a rowing (sport), rowing head race held on the penultimate complete weekend of October (i.e., on the Friday that falls between the 16th and the 22nd of the month, and on the Saturday an ...
* List of Charles River boathouses *
List of crossings of the Charles River This is a list of the crossings of the Charles River from its mouth at Boston Harbor upstream to its source at Echo Lake (the four tunnels crossing the inner portion of Boston Harbor are not included). All locations are in Massachusetts. __TOC_ ...
*
List of rivers of Massachusetts List of rivers of Massachusetts (U.S. state). All Massachusetts rivers flow to the Atlantic Ocean. The list is arranged by drainage basin from north to south, with respective tributaries indented under each larger stream's name, arranged travellin ...
* New Charles River Run * Sudbury Aqueduct Linear District which crosses the river from Needham to Newton on the Echo Bridge


Notes


References


Further reading

* ''Inventing the Charles River'', by Karl Haglund, MIT Press, 2003, in collaboration with the Charles River Conservancy. . * ''Gaining Ground: A History of Landmaking in Boston'', by Nancy S. Seasholes, MIT Press, 2003. . * ''Omeros'', by Derek Walcott, Faber and Faber (London), 1990. (Repeated references to the Charles river in descriptions of Boston life.) *


External links


The Esplanade Association

Charles River Watershed Association
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*


Charles River Conservancy


* ttp://www.epa.gov/boston/charles/ "Swimmable by 2005" EPA Effort
Charles River Swimming Club

Charles River Museum of Industry

U.S. Geological Survey data on flow in Charles River at various measurement points

US Geological Survey Report on The Charles River Restoration
* {{authority control Rivers of Suffolk County, Massachusetts Rivers of Middlesex County, Massachusetts Rivers of Norfolk County, Massachusetts Rivers of Worcester County, Massachusetts Rowing venues in the United States Landforms of Boston Watersheds of Boston Harbor Rivers of Massachusetts History of Dedham, Massachusetts