The Susquehanna River (;
Lenape: Siskëwahane) is a major
river
A river is a natural flowing watercourse, usually freshwater
Fresh water or freshwater is any naturally occurring liquid or frozen water containing low concentrations of dissolved salts and other total dissolved solids. Although the ...
located in the
Mid-Atlantic region of the United States, overlapping between the lower
Northeast
The points of the compass are a set of horizontal, radially arrayed compass directions (or azimuths) used in navigation and cartography. A compass rose is primarily composed of four cardinal directions—north, east, south, and west—each sepa ...
and the
Upland South. At long, it is the longest river on the
East Coast of the United States. By
watershed
Watershed is a hydrological term, which has been adopted in other fields in a more or less figurative sense. It may refer to:
Hydrology
* Drainage divide, the line that separates neighbouring drainage basins
* Drainage basin, called a "watershe ...
area, it is the 16th-largest river in the United States,
[Susquehanna River Trail](_blank)
Pennsylvania Fish and Boat Commission, accessed March 25, 2010.[Susquehanna River](_blank)
, Green Works Radio, accessed March 25, 2010. and also the longest river in the early 21st-century
continental United States without commercial boat traffic.
The Susquehanna River forms from two main branches: the
North Branch, which rises in
Cooperstown, New York, and is regarded by federal mapmakers as the main branch or headwaters,
and the
West Branch, which rises in western
Pennsylvania
Pennsylvania (; (Pennsylvania Dutch: )), officially the Commonwealth of Pennsylvania, is a state spanning the Mid-Atlantic, Northeastern, Appalachian, and Great Lakes regions of the United States. It borders Delaware to its southeast, Ma ...
and joins the main branch near
Northumberland
Northumberland () is a ceremonial counties of England, county in Northern England, one of two counties in England which border with Scotland. Notable landmarks in the county include Alnwick Castle, Bamburgh Castle, Hadrian's Wall and Hexham Ab ...
in central Pennsylvania.
The river drains , including nearly half of the land area of Pennsylvania. The
drainage basin
A drainage basin is an area of land where all flowing surface water converges to a single point, such as a river mouth, or flows into another body of water, such as a lake or ocean. A basin is separated from adjacent basins by a perimeter, ...
includes portions of the
Allegheny Plateau region of the
Appalachian Mountains
The Appalachian Mountains, often called the Appalachians, (french: Appalaches), are a system of mountains in eastern to northeastern North America. The Appalachians first formed roughly 480 million years ago during the Ordovician Period. The ...
, cutting through a succession of
water gaps in a broad
zigzag course to flow across the rural heartland of southeastern Pennsylvania and northeastern
Maryland
Maryland ( ) is a U.S. state, state in the Mid-Atlantic (United States), Mid-Atlantic region of the United States. It shares borders with Virginia, West Virginia, and the District of Columbia to its south and west; Pennsylvania to its north; ...
in the lateral near-parallel array of mountain ridges. The river empties into the northern end of the
Chesapeake Bay
The Chesapeake Bay ( ) is the largest estuary in the United States. The Bay is located in the Mid-Atlantic (United States), Mid-Atlantic region and is primarily separated from the Atlantic Ocean by the Delmarva Peninsula (including the parts: the ...
at
Perryville and
Havre de Grace, Maryland, providing half of the Bay's freshwater inflow. The bay lies in the flooded valley, or ''
ria'', of the Susquehanna.
Geology
The Susquehanna River is one of the
oldest existing rivers in the world, being dated as 320–340
Myr
The abbreviation Myr, "million years", is a unit of a quantity of (i.e. ) years, or 31.556926 teraseconds.
Usage
Myr (million years) is in common use in fields such as Earth science and cosmology. Myr is also used with Mya (million years ago). ...
, older than the mountain ridges through which it flows. These ridges resulted from the
Alleghenian orogeny
The Alleghanian orogeny or Appalachian orogeny is one of the geological mountain-forming events that formed the Appalachian Mountains and Allegheny Mountains. The term and spelling Alleghany orogeny was originally proposed by H.P. Woodward in 19 ...
uplift events, when Africa (as part of
Gondwana) slammed into the Northern part of
Euramerica. The Susquehanna basin reaches its ultimate outflow in the
Chesapeake Bay
The Chesapeake Bay ( ) is the largest estuary in the United States. The Bay is located in the Mid-Atlantic (United States), Mid-Atlantic region and is primarily separated from the Atlantic Ocean by the Delmarva Peninsula (including the parts: the ...
. It was well established in the
flat tidelands of eastern North America during the
Mesozoic
The Mesozoic Era ( ), also called the Age of Reptiles, the Age of Conifers, and colloquially as the Age of the Dinosaurs is the second-to-last era of Earth's geological history, lasting from about , comprising the Triassic, Jurassic and Creta ...
era
about 252 to 66 million years ago. This is the same period when the
Hudson,
Delaware
Delaware ( ) is a state in the Mid-Atlantic region of the United States, bordering Maryland to its south and west; Pennsylvania to its north; and New Jersey and the Atlantic Ocean to its east. The state takes its name from the adjacen ...
and
Potomac rivers were established.
Course
Both branches and the lower Susquehanna were part of important regional transportation corridors. The river was extensively used for
muscle-powered ferries
A ferry is a ship, watercraft or amphibious vehicle used to carry passengers, and sometimes vehicles and cargo, across a body of water. A passenger ferry with many stops, such as in Venice, Italy, is sometimes called a water bus or water taxi ...
,
boat
A boat is a watercraft of a large range of types and sizes, but generally smaller than a ship, which is distinguished by its larger size, shape, cargo or passenger capacity, or its ability to carry boats.
Small boats are typically found on i ...
s, and
canal
Canals or artificial waterways are waterways or engineered channels built for drainage management (e.g. flood control and irrigation) or for conveyancing water transport vehicles (e.g. water taxi). They carry free, calm surface fl ...
boat shipping of bulk goods in the brief decades before the
Pennsylvania Canal System was eclipsed by the coming of age of
steam-powered
railways. While the railroad industry has been less prevalent since the closures and mergers of the 1950s–1960s, a wide-ranging rail transportation infrastructure still operates along the river's shores.
North Branch Susquehanna
Also called the Main Branch Susquehanna, the longer branch of the river rises at the outlet of
Otsego Lake in
Cooperstown, New York. From there, the north branch of the river runs west-southwest through rural farmland and dairy country, receiving the
Unadilla River
The Unadilla River is a river in the Central New York Region of New York State. The river begins northeast of the hamlet of Millers Mills and flows generally south to the village of Sidney, where it converges with the Susquehanna River, which d ...
at
Sidney
Sidney may refer to:
People
* Sidney (surname), English surname
* Sidney (given name), including a list of people with the given name
* Sidney (footballer, born 1972), full name Sidney da Silva Souza, Brazilian football defensive midfielder
* ...
. It dips south into
Pennsylvania
Pennsylvania (; (Pennsylvania Dutch: )), officially the Commonwealth of Pennsylvania, is a state spanning the Mid-Atlantic, Northeastern, Appalachian, and Great Lakes regions of the United States. It borders Delaware to its southeast, Ma ...
briefly to turn sharply 90 degrees west at
Susquehanna and again 90 degrees north at
Great Bend hooking back into
New York. It receives the
Chenango in downtown
Binghamton. After meandering westwards, it turns south crossing the line again through the twin towns of
Waverly, New York, and
Sayre, Pennsylvania, and their large
right bank railyard, once briefly holding the largest structure in the United States devoted to the maintenance and construction of railroad locomotives.
A couple of miles south, in
Athens Township, Pennsylvania, it receives the
Chemung from the northwest. It makes a right-angle curve between Sayre and
Towanda to cut through the
Endless Mountains in the Allegheny Plateau of Pennsylvania. It receives the
Lackawanna River southwest of
Scranton and turns sharply to the southwest, flowing through the former
anthracite industrial heartland in the mountain ridges of northeastern Pennsylvania, past
Pittston City (
Greater Pittston),
Wilkes-Barre,
Nanticoke,
Shickshinny,
Berwick,
Bloomsburg, and
Danville, before receiving the West Branch at Northumberland.
West Branch Susquehanna
The origin of the official West Branch is near
Elmora, Pennsylvania
Bakerton (Elmora PO) is an unincorporated community in the township of West Carroll, Cambria County, Pennsylvania, United States. The community is south-southeast of Northern Cambria
Northern may refer to the following:
Geography
* North, a ...
, in northern
Cambria County near the contemporary and
US Route 219 (locally Plank Road). It travels northeasterly through the towns of
Northern Cambria,
Cherry Tree,
Burnside,
Mahaffey and
Curwensville
Curwensville is a borough in Clearfield County, Pennsylvania, United States, north of Altoona on the West Branch Susquehanna River. Coal mining, tanning, and the manufacture of fire bricks were the industries at the turn of the 20th century. ...
(where the river is dammed to form a lake), into and through
Clearfield, where it receives
Clearfield Creek.
The West Branch turns to the southeast and passes
Karthaus (at Mosquito Creek),
Keating (at Sinnemahoning Creek),
Renovo and
Lock Haven, where it receives
Bald Eagle Creek. It passes
Williamsport, where both Lycoming Creek and Loyalsock Creek empty into it, then turns south, passing
Lewisburg, before joining the North Branch flowing from the northwest at Northumberland.
Main Susquehanna flow
Downstream from the confluence of its branches in
Northumberland
Northumberland () is a ceremonial counties of England, county in Northern England, one of two counties in England which border with Scotland. Notable landmarks in the county include Alnwick Castle, Bamburgh Castle, Hadrian's Wall and Hexham Ab ...
, the river flows south past
Selinsgrove
Selinsgrove is the largest borough in Snyder County, Pennsylvania, United States. The population is estimated to be 5,761 for the 2020 Census.
Selinsgrove is geographically located in the middle of the Susquehanna River Valley in Central Penns ...
, where it is joined by its
Penns Creek tributary, and cuts through a
water gap at the western end of
Mahantongo Mountain. It receives the
Juniata River from the northwest at
Duncannon, then passes through its last water gap, the
Susquehanna Gap through the
Blue Mountain Ridge, just northwest of
Harrisburg.
Downtown Harrisburg developed on the east side of the river, which is nearly a mile wide here. Harrisburg is the largest city located on the lower river, which flows southeast across
South Central Pennsylvania, forming the border between
York
York is a cathedral city with Roman Britain, Roman origins, sited at the confluence of the rivers River Ouse, Yorkshire, Ouse and River Foss, Foss in North Yorkshire, England. It is the historic county town of Yorkshire. The city has many hist ...
and
Lancaster counties, and receiving
Swatara Creek from the northeast. It crosses into northern Maryland approximately northeast of
Baltimore
Baltimore ( , locally: or ) is the List of municipalities in Maryland, most populous city in the U.S. state of Maryland, fourth most populous city in the Mid-Atlantic (United States), Mid-Atlantic, and List of United States cities by popula ...
and is joined by
Octoraro Creek from the northeast and
Deer Creek from the northwest. The river enters the northern end of the
Chesapeake Bay
The Chesapeake Bay ( ) is the largest estuary in the United States. The Bay is located in the Mid-Atlantic (United States), Mid-Atlantic region and is primarily separated from the Atlantic Ocean by the Delmarva Peninsula (including the parts: the ...
at
Havre de Grace.
Concord Point Light
Concord Point Light is a lighthouse in Havre de Grace, Maryland. It overlooks the point where Susquehanna River flows into the Chesapeake Bay, an area of increasing navigational traffic when it was constructed in 1827. It is the northernmost lig ...
was built here in 1827 to accommodate the increasing navigational traffic.
Etymology
"Susquehanna" may come from the
Lenape (Delaware) word ''siskëwahane'' meaning "Muddy River". Alternatively, it may come from the
Len'api term ''Sisa'we'hak'hanna'', which means "Oyster River". Oyster beds were widespread in the bay near the mouth of the river, which the Lenape farmed. They left oyster shell
middens at their villages. A third account translates "Susquehanna" from
Susquehannock language as "the stream that falls toward the south" or "long-crooked-river".
The Len'api were an
Algonquian-speaking Native American people who had communities ranging from coastal Connecticut through New York and Long Island, and further south into New Jersey and Delaware in the mid-Atlantic area. Their settlements in Pennsylvania included ''Con'esto'ga'' ("Roof-place" or "town", modern
Washington Boro, Lancaster County), also called ''Ka'ot'sch'ie'ra'' ("Place-crawfish", modern Chickisalunga, Lancaster County), or ''Gasch'guch'sa'' ("Great-fall-in-river", modern
Conewago Falls Conewago Falls in Lancaster County, Pennsylvania was a historic river barrier below and south of HarrisburgThree Mile Island Nuclear Generating Station at a wide spot (), where the river drops in along the lower Susquehanna River along either sid ...
, Lancaster County). They were called ''Minquas'' ("quite different"), or ''Sisa'we'hak'hanna'lenno'wak'' ("Oyster-river-people") by others. The ''Len'api'' also called the area ''Sisa'we'hak'hanna'unk'' ("Oyster-river-place").
Peoples of the mid-Atlantic Coast included coastal peoples who spoke
Algonquian languages
The Algonquian languages ( or ; also Algonkian) are a subfamily of indigenous American languages that include most languages in the Algic language family. The name of the Algonquian language family is distinguished from the orthographically simi ...
, such as the Len'api (whose bands spoke three dialects of Lenape), and
Iroquoian languages
The Iroquoian languages are a language family of indigenous peoples of North America. They are known for their general lack of labial consonants. The Iroquoian languages are polysynthetic and head-marking.
As of 2020, all surviving Iroquoian ...
-speaking peoples of the interior, such as the
Eroni and the
Five Nations of the Iroquois League
5 is a number, numeral, and glyph.
5, five or number 5 may also refer to:
* AD 5, the fifth year of the AD era
* 5 BC, the fifth year before the AD era
Literature
* ''5'' (visual novel), a 2008 visual novel by Ram
* ''5'' (comics), an awa ...
, or ''
Haudenosaunee
The Iroquois ( or ), officially the Haudenosaunee ( meaning "people of the longhouse"), are an Iroquoian-speaking confederacy of First Nations peoples in northeast North America/ Turtle Island. They were known during the colonial years to ...
''.
The English of Pennsylvania referred to the Eroni people of Conestoga as "Susquehannocks" or "Susquehannock Indians", a name derived from the Lenape term.
[Zeisberger, David. ''Indian Dictionary: English, German, Iroquois—The Onondaga and Algonquin—The Delaware''. Harvard University Press, 1887. , p. 141.] In addition,
John Smith of Jamestown, Virginia, labeled their settlement as ''"Sasquesahanough"'' on his 1612 map when he explored the upper
Chesapeake Bay
The Chesapeake Bay ( ) is the largest estuary in the United States. The Bay is located in the Mid-Atlantic (United States), Mid-Atlantic region and is primarily separated from the Atlantic Ocean by the Delmarva Peninsula (including the parts: the ...
area.
In Virginia and other southern colonies,
Siouan-speaking tribes constituted a third major language family, with their peoples occupying much of the middle areas of the interior.
Iroquoian speakers, such as the
Cherokee
The Cherokee (; chr, ᎠᏂᏴᏫᏯᎢ, translit=Aniyvwiyaʔi or Anigiduwagi, or chr, ᏣᎳᎩ, links=no, translit=Tsalagi) are one of the indigenous peoples of the Southeastern Woodlands of the United States. Prior to the 18th century, th ...
and
Tuscarora peoples, generally occupied areas to the interior near the Piedmont and foothills.
History

In 1615, the river was traversed by the French explorer
Étienne Brûlé. In the 1670s the Conestoga, or
Susquehannock people, succumbed to
Iroquois conquest by the powerful
Five Nations of the Iroquois League
5 is a number, numeral, and glyph.
5, five or number 5 may also refer to:
* AD 5, the fifth year of the AD era
* 5 BC, the fifth year before the AD era
Literature
* ''5'' (visual novel), a 2008 visual novel by Ram
* ''5'' (comics), an awa ...
based in present-day New York, who wanted to control the
fur trade with Europeans. The Susquehannock assimilated with the Iroquois. In the aftermath, the Iroquois resettled some of the semi-tributary
Lenape in this area, as it was near the western boundary of the Lenape's former territory, known as
Lenapehoking.
The Susquehanna River has continued to play an important role throughout the
history of the United States. In the 18th century,
William Penn, the founder of the
Pennsylvania Colony, negotiated with the Lenape to allow white settlement in the area between the
Delaware River and the Susquehanna, which was part of Lenape territory. In late colonial times, the river became an increasingly important transportation corridor, used to ship
anthracite coal, discovered by
Necho Allen Necho may refer to:
* Necho I (died 664 BC), Egyptian pharaoh of the 26th Dynasty
* Necho II (died 595 BC), Egyptian pharaoh of the 26th Dynasty
* Necho (crater), a crater on the Moon
See also
* Neco (1895–1977), Brazilian footballer
* Neco (n ...
, from its upper reaches in the mountains to the markets downriver.
In 1779 during the
American Revolutionary War
The American Revolutionary War (April 19, 1775 – September 3, 1783), also known as the Revolutionary War or American War of Independence, was a major war of the American Revolution. Widely considered as the war that secured the independence of ...
, General
James Clinton led an expedition down the Susquehanna from its headwaters. His party had made the upper portion navigable by damming the river's source at
Otsego Lake, allowing the lake's level to rise, and then destroying the dam and flooding the river in order for his
flotilla to travel for miles downstream.
James Fenimore Cooper
James Fenimore Cooper (September 15, 1789 – September 14, 1851) was an American writer of the first half of the 19th century, whose historical romances depicting colonist and Indigenous characters from the 17th to the 19th centuries brought h ...
described this event in the introduction to his historical novel, ''
The Pioneers'' (1823).

At
Athens, Pennsylvania, then known as Tioga or "Tioga Point", Clinton met with General
John Sullivan and his forces, who had marched from
Easton, Pennsylvania. Together on August 29, they defeated the
Tories and warriors of allied Iroquois bands at the
Battle of Newtown
The Battle of Newtown (August 29, 1779) was a major battle of the Sullivan Expedition, an armed offensive led by General John Sullivan that was ordered by the Continental Congress to end the threat of the Iroquois who had sided with the British ...
(near present-day
Elmira, New York). This was part of what was known as the "Sullivan-Clinton Campaign" or the "
Sullivan Expedition". They swept through western New York, dominated by the
Seneca people, destroying more than 40 Seneca villages, as well as the stores of crops the people had set aside for winter. Many of the
Iroquois
The Iroquois ( or ), officially the Haudenosaunee ( meaning "people of the longhouse"), are an Iroquoian-speaking confederacy of First Nations peoples in northeast North America/ Turtle Island. They were known during the colonial years to ...
left New York and went to Canada as refugees; casualties from exposure and starvation were high that winter.
Following the United States gaining independence in the Revolutionary War, in 1790 Colonel
Timothy Matlack
Timothy Matlack (March 28, 1736 – April 14, 1829) was an American politician, military officer and businessman. A brewer and beer bottler who emerged as a popular and powerful leader in the American Revolutionary War, Matlack served as Secretar ...
,
Samuel Maclay and
John Adlum were commissioned by the
Supreme Executive Council of the Commonwealth of Pennsylvania to survey the headwaters of the Susquehanna river. They were to explore a route for a passage to connect the
West Branch with the waters of the
Allegheny River, which flowed to
Pittsburgh
Pittsburgh ( ) is a city in the Commonwealth (U.S. state), Commonwealth of Pennsylvania, United States, and the county seat of Allegheny County, Pennsylvania, Allegheny County. It is the most populous city in both Allegheny County and Wester ...
and the
Ohio River. In 1792, the
Union Canal was proposed in order to link the Susquehanna and the Delaware rivers in Pennsylvania along
Swatara and
Tulpehocken creeks. In the 19th century, many industrial centers developed along the Susquehanna, using its
water power to drive mills and coal machinery, to cool machines, and as a waterway for the transport of raw and manufactured goods.
Based on colonial charters, both Pennsylvania and
Connecticut
Connecticut () is the southernmost state in the New England region of the Northeastern United States. It is bordered by Rhode Island to the east, Massachusetts to the north, New York to the west, and Long Island Sound to the south. Its cap ...
claimed land in the
Wyoming Valley
The Wyoming Valley is a historic industrialized region of Northeastern Pennsylvania. The region is historically notable for its influence in helping fuel the American Industrial Revolution with its many anthracite coal-mines. As a metropolitan ...
along the Susquehanna. Connecticut founded
Westmoreland County here and defended its claim in the
Pennamite Wars. Under federal arbitration, eventually the state ceded this territory to Pennsylvania.
In the 1790s English
Lake Poets Robert Southey,
Samuel Taylor Coleridge, and
Robert Lovell formulated the "Pantisocracy Plan" to marry three sisters and move to the banks of the Susquehanna River to start a socialist experiment. They made the marriages but Southey moved to
Lisbon, Portugal, to visit an uncle, and they abandoned the plan to move to the United States.
In 1833 John B. Jervis began a canal system to extend the
Chenango River and connect the waters of the Susquehanna from
Chenango Point
Binghamton () is a city in the U.S. state of New York, and serves as the county seat of Broome County. Surrounded by rolling hills, it lies in the state's Southern Tier region near the Pennsylvania border, in a bowl-shaped valley at the confluenc ...
to the
Erie Canal
The Erie Canal is a historic canal in upstate New York that runs east-west between the Hudson River and Lake Erie. Completed in 1825, the canal was the first navigable waterway connecting the Atlantic Ocean to the Great Lakes, vastly redu ...
, which ran through the
Mohawk Valley of New York, ultimately connecting with
Lake Erie
Lake Erie ( "eerie") is the fourth largest lake by surface area of the five Great Lakes in North America and the eleventh-largest globally. It is the southernmost, shallowest, and smallest by volume of the Great Lakes and therefore also has t ...
through the Wood Canal. In October 1836, water from the Susquehanna was connected to the Erie Canal at
Utica, New York. Water travel was the main form of transportation during that era. The Erie Canal dramatically expanded trade between communities around the
Great Lakes
The Great Lakes, also called the Great Lakes of North America, are a series of large interconnected freshwater lakes in the mid-east region of North America that connect to the Atlantic Ocean via the Saint Lawrence River. There are five la ...
and markets in New York and Pennsylvania. With the expansion of construction of
railroad lines, canal-transport became unprofitable, as it could not compete in speed or flexibility.
[Chenango, Whitford. http://www.mikalac.com/tech/tra/chenango.html ] Boats had to climb a net height of between basins, requiring the use of more than 100
water locks, which were too expensive to be maintained under the new competition.

The Susquehanna River figures in the history of the
Latter Day Saint movement
The Latter Day Saint movement (also called the LDS movement, LDS restorationist movement, or Smith–Rigdon movement) is the collection of independent church groups that trace their origins to a Christian Restorationist movement founded by Jo ...
. It holds that
Joseph Smith
Joseph Smith Jr. (December 23, 1805June 27, 1844) was an American religious leader and founder of Mormonism and the Latter Day Saint movement. When he was 24, Smith published the Book of Mormon. By the time of his death, 14 years later, h ...
and
Oliver Cowdery received the priesthood from heavenly beings at a site along the Susquehanna and performed their first baptisms of Latter Day Saints in the North Branch of the river. Smith and Cowdery said that they were visited on May 15, 1829, by the resurrected
John the Baptist
John the Baptist or , , or , ;Wetterau, Bruce. ''World history''. New York: Henry Holt and Company. 1994. syc, ܝܘܿܚܲܢܵܢ ܡܲܥܡܕ݂ܵܢܵܐ, Yoḥanān Maʿmḏānā; he, יוחנן המטביל, Yohanān HaMatbil; la, Ioannes Bapti ...
and given the
Aaronic priesthood. Following his visit, Smith and Cowdery baptized each other in the river. Later that year, they said they were visited near the river by the apostles
Peter,
James and
John. Both events took place in unspecified locations near the river's shore in
Susquehanna County, Pennsylvania.
During the
Civil War
A civil war or intrastate war is a war between organized groups within the same state (or country).
The aim of one side may be to take control of the country or a region, to achieve independence for a region, or to change government polic ...
's 1863
Gettysburg Campaign,
Union Major General
Major general (abbreviated MG, maj. gen. and similar) is a military rank used in many countries. It is derived from the older rank of sergeant major general. The disappearance of the "sergeant" in the title explains the apparent confusion of a ...
Darius N. Couch
Darius Nash Couch (July 23, 1822 – February 12, 1897) was an American soldier, businessman, and naturalist. He served as a career U.S. Army officer during the Mexican–American War, the Second Seminole War, and as a general officer in the Uni ...
, commander of the
Department of the Susquehanna The Department of the Susquehanna was a military department created by the United States War Department during the Gettysburg Campaign of the American Civil War. Its goal was to protect the state capital and the southern portions of the commonweal ...
, resolved that
Robert E. Lee
Robert Edward Lee (January 19, 1807 – October 12, 1870) was a Confederate general during the American Civil War, towards the end of which he was appointed the overall commander of the Confederate States Army. He led the Army of Nort ...
's
Confederate Army of Northern Virginia
The Army of Northern Virginia was the primary military force of the Confederate States of America in the Eastern Theater of the American Civil War. It was also the primary command structure of the Department of Northern Virginia. It was most o ...
would not cross the Susquehanna. He positioned
militia
A militia () is generally an army or some other fighting organization of non- professional soldiers, citizens of a country, or subjects of a state, who may perform military service during a time of need, as opposed to a professional force of r ...
units under Maj.
Granville Haller
Granville Owen Haller (January 31, 1819 – May 2, 1897) was a noted Indian fighter, United States Army officer, and wealthy postbellum businessman who settled in northwest Washington state. During the American Civil War, he was charged with the d ...
to protect key bridges in Harrisburg and
Wrightsville, as well as nearby fords. Confederate forces reached the river at several locations in
Cumberland and
York
York is a cathedral city with Roman Britain, Roman origins, sited at the confluence of the rivers River Ouse, Yorkshire, Ouse and River Foss, Foss in North Yorkshire, England. It is the historic county town of Yorkshire. The city has many hist ...
counties.
In 1972 the remnants of
Hurricane Agnes
Hurricane Agnes in 1972 was the costliest hurricane to hit the United States at the time, causing an estimated $2.1 billion in damage. The hurricane's death toll was 128. The effects of Agnes were widespread, from the Caribbean to Canada, ...
stalled over the New York-Pennsylvania border, dropping as much as of rain on the hilly lands. Much of that precipitation was received into the Susquehanna from its western tributaries, and the valley suffered disastrous flooding.
Wilkes-Barre, Pennsylvania
Wilkes-Barre ( or ) is a city in the U.S. state of Pennsylvania and the county seat of Luzerne County, Pennsylvania, Luzerne County. Located at the center of the Wyoming Valley in Northeastern Pennsylvania, it had a population of 44,328 in th ...
, was among the hardest-hit communities and the capital Harrisburg was flooded. The
Chesapeake Bay
The Chesapeake Bay ( ) is the largest estuary in the United States. The Bay is located in the Mid-Atlantic (United States), Mid-Atlantic region and is primarily separated from the Atlantic Ocean by the Delmarva Peninsula (including the parts: the ...
received so much fresh water that it altered the ecosystem, killing much of the marine life that depended on saltwater.
The
Mid-Atlantic Flood of June 2006
The Mid-Atlantic United States flood of 2006 was a significant flood that affected much of the Mid-Atlantic region of the eastern United States. The flooding was very widespread, affecting numerous rivers, lakes and communities from upstate New ...
, caused by a stalled jet stream-driven storm system, affected portions of the river system. The worst affected area was
Binghamton, New York, where record-setting flood levels forced the evacuation of thousands of residents.
In September 2011 the Susquehanna River and its communities were hit by
Tropical Storm Lee The name Lee has been used for seven tropical cyclones worldwide. In the Atlantic, it replaced the name '' Lenny''.
In the Atlantic:
* Tropical Storm Lee (2005), a short-lived, minimal tropical storm
* Tropical Storm Lee (2011), a strong tropical ...
, which caused the worst flooding since Agnes in 1972.
Bridges, ferries, canals and dams
The Susquehanna River is important in the
transportation history of the United States. Before the
Port Deposit Bridge opened in 1818, the river formed a barrier between the northern and southern states, as it could be crossed only by
ferry. The earliest dams were constructed to support ferry operations in low water. The presence of many rapids in the river meant that while commercial traffic could navigate down the river in the high waters of the spring thaws, nothing could move up.

The Susquehanna was improved by
navigations throughout the 1820s and 1830s as the
Pennsylvania Canal. Together with facilities of the
Allegheny Portage Railroad, loaded barges were transferred from the canal and hoisted across the
mountain ridge into the
Pittsburgh
Pittsburgh ( ) is a city in the Commonwealth (U.S. state), Commonwealth of Pennsylvania, United States, and the county seat of Allegheny County, Pennsylvania, Allegheny County. It is the most populous city in both Allegheny County and Wester ...
area with access to the
Monongahela,
Allegheny Rivers and their confluence into the
Ohio River flowing southwest towards the
Mississippi River
The Mississippi River is the second-longest river and chief river of the second-largest drainage system in North America, second only to the Hudson Bay drainage system. From its traditional source of Lake Itasca in northern Minnesota, it ...
. The
Union Canal was completed in 1828 to connect the
Schuylkill River
The Schuylkill River ( , ) is a river running northwest to southeast in eastern Pennsylvania. The river was improved by navigations into the Schuylkill Canal, and several of its tributaries drain major parts of Pennsylvania's Coal Region. It ...
(flowing southeast towards the
Delaware River at
Philadelphia
Philadelphia, often called Philly, is the largest city in the Commonwealth of Pennsylvania, the sixth-largest city in the U.S., the second-largest city in both the Northeast megalopolis and Mid-Atlantic regions after New York City. Sinc ...
) at
Reading westwards to the Susquehanna River above the state capital of
Harrisburg. Competition from faster transport via the
railroad industry by the 1850s resulted in reducing the reliance on the river for transport.
[Paddle the Susquehanna](_blank)
, accessed September 10, 2011.
Two canal systems were constructed on the lower Susquehanna to bypass the rapids. The first was the
Susquehanna Canal
The Susquehanna and Tidewater Canal between Wrightsville, Pennsylvania, and Havre de Grace, Maryland, at the head of Chesapeake Bay, provided an interstate shipping alternative to 19th-century arks, rafts, and boats plying the difficult waters o ...
, also called the Conowingo Canal or the Port Deposit Canal, completed in 1802 by a Maryland company known as the Proprietors of the Susquehanna Canal. The second was the much longer and more successful
Susquehanna and Tidewater Canal. The canals required dams to provide canal water and navigation pools.
As the industrial age progressed, bridges replaced
ferries
A ferry is a ship, watercraft or amphibious vehicle used to carry passengers, and sometimes vehicles and cargo, across a body of water. A passenger ferry with many stops, such as in Venice, Italy, is sometimes called a water bus or water taxi ...
, and railroads replaced canals. The railroads were often constructed on top of the canal right-of-way along the river. Many canal remnants can be seen; for example, in
Havre de Grace, Maryland, along
US Route 15 in Pennsylvania, and in upstate New York at various locations. These latter remnants are parts of the upstream divisions of the
Pennsylvania Canal, of privately funded canals, and of canals in the New York system.

Today 200 bridges cross the Susquehanna. The
Rockville Bridge, which crosses the river from
Harrisburg to
Marysville, Pennsylvania, is the longest
stone masonry arch bridge
An arch bridge is a bridge with abutments at each end shaped as a curved arch. Arch bridges work by transferring the weight of the bridge and its loads partially into a horizontal thrust restrained by the abutments at either side. A viaduct (a ...
in the world. It was built by the
Pennsylvania Railroad in 1902, replacing an earlier iron bridge. Two seasonal ferries operate across the Susquehanna. The
Millersburg Ferry at
Millersburg, Pennsylvania, is a practical ferry for up to four vehicles and 50 passengers, while the ''
Pride of the Susquehanna
''Pride of the Susquehanna'' is a diesel-powered paddle-wheel riverboat owned and operated by the Harrisburg Area Riverboat Society non-profit, moored at City Island, Harrisburg, Pennsylvania on the Susquehanna River during its annual operational ...
'', based at Harrisburg, provides a passenger-only pleasure cruise.
Most of the canals have been filled in or are partially preserved as a part of historical parks. Dams generally are used to generate power or to provide lakes for recreation.
Environmental threats

The environmental group American Rivers named the Susquehanna "America's Most Endangered River for 2005" because of the excessive
pollution it receives. Most of the pollution in the river is caused by excess animal
manure from
farming
Agriculture or farming is the practice of cultivating plants and livestock. Agriculture was the key development in the rise of sedentary human civilization, whereby farming of domesticated species created food surpluses that enabled peop ...
, agricultural
runoff,
urban and suburban stormwater runoff, and raw or inadequately treated
sewage. In 2003 the river contributed 50% of the freshwater, 44% of the
nitrogen, 21% of the
phosphorus, and 21% of the
sediment
Sediment is a naturally occurring material that is broken down by processes of weathering and erosion, and is subsequently transported by the action of wind, water, or ice or by the force of gravity acting on the particles. For example, sa ...
flowing into the
Chesapeake Bay
The Chesapeake Bay ( ) is the largest estuary in the United States. The Bay is located in the Mid-Atlantic (United States), Mid-Atlantic region and is primarily separated from the Atlantic Ocean by the Delmarva Peninsula (including the parts: the ...
.
It was designated as one of the
American Heritage Rivers in 1997. The designation provides for technical assistance from federal agencies to state and local governments working in the Susquehanna watershed.

Another environmental concern is radioactivity released during the 1979
Three Mile Island accident. However, extensive
radionuclide studies over a 25-year period from 1979 through 2003, confirm that the Three Mile Island accident has not resulted in any harmful radiation effects. The areas in and along a 262-km length of the Susquehanna River in Pennsylvania were monitored for the presence of radioactive materials. This study began two months after the 1979 Three Mile Island (TMI) partial reactor meltdown; it spanned the next 25 years. Monitoring points included stations at the PPL Susquehanna and TMI nuclear power plants. Monthly gamma measurements documented concentrations of radionuclides from natural and anthropogenic sources. During this study, various series of gamma-emitting radionuclide concentration measurements were made in many general categories of animals, plants, and other inorganic matter, both within and near the river. Sampling began in 1979 before the first start-up of the PPL Susquehanna power plant. Although all species were not continuously monitored for the entire period, an extensive database was compiled. In 1986, the ongoing measurements detected fallout from the
Chernobyl nuclear accident. These data may be used in support of dose or environmental transport calculations. The remaining reactor at
Three Mile Island Nuclear Generating Station was shut down in 2019.
In 2015, a
smallmouth bass with a rare, cancerous tumor was caught from the river, raising renewed concerns about toxic materials and water pollution.
The
Environmental Protection Agency reported, "we do not have sufficient data at this time to scientifically support listing the main stem of the Susquehanna as
impaired
Disability is the experience of any condition that makes it more difficult for a person to do certain activities or have equitable access within a given society. Disabilities may be Cognitive disability, cognitive, Developmental disability, dev ...
."
Recreation
The Susquehanna River has attracted boaters who watch or fish for its migratory species. Many tourists and local residents use the Susquehanna in the summer for recreation purposes such as kayaking, canoeing, and motor-boating. Due to the high volume of
smallmouth bass in the river, it is the host of numerous bass fishing tournaments each year and is regarded by many as one of the premier bass fishing rivers in North America. Canoe races are held annually on various sections of the river, such as the amateur race held in
Oneonta, New York.
Susquehanna rowing and paddling have a long history. Starting in 1874, rowers from
Shamokin Dam, Pennsylvania, raced men from
Sunbury. The General Clinton Canoe Regatta, a flat-water race, takes place each year in
Bainbridge, New York, on
Memorial Day weekend. Binghamton University Crew and Hiawatha Island Boat Club are also located on the river, in the
Southern Tier of New York.
The
Appalachian Trail
The Appalachian Trail (also called the A.T.), is a hiking trail in the Eastern United States, extending almost between Springer Mountain in Georgia and Mount Katahdin in Maine, and passing through 14 states.Gailey, Chris (2006)"Appalachian ...
passes through
Duncannon, Pennsylvania, and crosses the Susquehanna on the
Clarks Ferry Bridge.
See also
References
Further reading
*
External links
U.S. Geological Survey: PA stream gaging stationsSusquehanna River Basin CommissionAmerican Rivers article: ''Susquehanna River "Most Endangered"''Hiawatha Island Boat Club – Owego, New YorkBinghamton University Crew – Binghamton, New York
{{Authority control
Rivers of Otsego County, New York
Rivers of Pennsylvania
Rivers of Maryland
Rivers of New York (state)
American Heritage Rivers
Tributaries of the Chesapeake Bay
Environment of the Mid-Atlantic states
Allegheny Plateau
Rivers of Broome County, New York
Rivers of York County, Pennsylvania
Rivers of Lancaster County, Pennsylvania
Rivers of Dauphin County, Pennsylvania
Rivers of Cumberland County, Pennsylvania
Rivers of Perry County, Pennsylvania
Rivers of Juniata County, Pennsylvania
Rivers of Snyder County, Pennsylvania
Rivers of Northumberland County, Pennsylvania
Rivers of Montour County, Pennsylvania
Rivers of Columbia County, Pennsylvania
Rivers of Luzerne County, Pennsylvania
Rivers of Lackawanna County, Pennsylvania
Rivers of Wyoming County, Pennsylvania
Rivers of Bradford County, Pennsylvania
Rivers of Susquehanna County, Pennsylvania
Significant places in Mormonism
Latter Day Saint movement in New York (state)
Latter Day Saint movement in Pennsylvania