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61-558: Nepean Bay is a bay located on the north-east coast of Kangaroo Island in the Australian state of South Australia about 130 kilometres (81 miles) south-south-west of Adelaide . It was named by the British navigator, Matthew Flinders , after Sir Evan Nepean on 21 March 1802. Nepean Bay lies between Point Marsden and Kangaroo Head on the north-east coast of Kangaroo Island facing into Investigator Strait . Nepean Bay itself includes

122-453: A bay unless its area is as large as (or larger than) that of the semi-circle whose diameter is a line drawn across the mouth of that indentation — otherwise it would be referred to as a bight . There are various ways in which bays can form. The largest bays have developed through plate tectonics . As the super-continent Pangaea broke up along curved and indented fault lines, the continents moved apart and left large bays; these include

183-525: A distance of about 8 nautical miles (15 km; 9.2 mi). The cove has a maximum depth of about 10 metres (33 ft) at its mouth. Its shoreline is described as (distances in nautical miles): The S(outh) shore, between Morrison Point and a red cliffy point about 3 miles W, is high and rocky. A range of wooded hills along the S(outh) shore falls gradually to the W(est). Red cliffs extend about 1.5 miles W(est) from

244-555: A net height of 1,009 feet (308 m) 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 . It holds that Joseph Smith 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

305-678: A third major language family, with their peoples occupying much of the middle areas of the interior. Algongquian-speaking peoples predominated in the coastal areas. Iroquoian speakers , such as the Cherokee and Tuscarora peoples , generally occupied areas to the interior near the Piedmont and foothills. 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

366-660: Is a major river located in the Mid-Atlantic region of the United States, crossing three lower Northeast states (New York, Pennsylvania and Maryland). At 444 miles (715 km) long, it is the longest river on the East Coast of the United States . By watershed area, it is the 16th-largest river in the United States, 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:

427-511: Is a practical ferry for up to four vehicles and 50 passengers, while the Pride of the Susquehanna , 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. The environmental group American Rivers named the Susquehanna " America's Most Endangered River for 2005 " because of

488-470: Is described as (distances in nautical miles): The shore of Eastern Cove, between Kangaroo Head and American Beach , 2.5 miles S(outh), is rugged and rocky. Between the SW end of American Beach and Rocky Point, it consists of alternate beaches and low, rocky points. A sandy beach forms the S(outh) shore between Rocky Point and Strawbridge Point, 2.75 miles WNW. The S(outh) side of the cove is low with wooded hills at

549-770: 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 70-mile (110 km) 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

610-589: The Allegheny Plateau region of the Appalachian Mountains , cutting through a succession of water gaps in a broad zigzag course to flow across the rural heartland of southeastern Pennsylvania and northeastern Maryland in the lateral near-parallel array of mountain ridges. The river empties into the northern end of the Chesapeake Bay at Perryville and Havre de Grace, Maryland , providing half of

671-465: The Chernobyl nuclear accident . 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

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732-563: The Chesapeake Bay . It was well established in the flat tidelands of eastern North America during the Mesozoic era about 252 to 66 million years ago. This is the same period when the Hudson , Delaware and Potomac rivers were established. Both branches and the lower Susquehanna were part of important regional transportation corridors. The river was extensively used for muscle-powered ferries , boats , and canal boat shipping of bulk goods in

793-570: The Civil War 's 1863 Gettysburg Campaign , Union Major General Darius N. Couch , commander of the Department of the Susquehanna , resolved that Robert E. Lee 's Confederate Army of Northern Virginia would not cross the Susquehanna. He positioned militia units under Maj. Granville Haller to protect key bridges in Harrisburg and Wrightsville , as well as nearby fords. Confederate forces reached

854-596: 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

915-654: The Gulf of Guinea , the Gulf of Mexico , and the Bay of Bengal , which is the world's largest bay. Bays also form through coastal erosion by rivers and glaciers . A bay formed by a glacier is a fjord . Rias are created by rivers and are characterised by more gradual slopes. Deposits of softer rocks erode more rapidly, forming bays, while harder rocks erode less quickly, leaving headlands . Susquehanna River The Susquehanna River ( / ˌ s ʌ s k w ə ˈ h æ n ə / SUSS -kwə- HAN -ə ; Lenape : Siskëwahane )

976-554: The Lenape (Delaware) word siskëwahane meaning "Muddy River". Alternatively, it may come from the Lenape (Delaware) 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 the Susquehannock language , of

1037-760: The Monongahela , Allegheny Rivers and their confluence into the Ohio River flowing southwest towards the Mississippi River . The 82-mile (132 km) Union Canal was completed in 1828 to connect the Schuylkill River (flowing southeast towards the Delaware River at Philadelphia ) at Reading westwards to the Susquehanna River above the state capital of Harrisburg . Competition from faster transport via

1098-581: 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 and joins the main branch near Northumberland in central Pennsylvania. The river drains 27,500 square miles (71,000 km ), including nearly half of the land area of Pennsylvania. The drainage basin includes portions of

1159-636: 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 claimed land in

1220-518: 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 and Lancaster counties, and receiving Swatara Creek from

1281-522: The Wyoming Valley 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

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1342-505: 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 , from its upper reaches in

1403-822: The railroad industry by the 1850s resulted in reducing the reliance on the river for transport. Two canal systems were constructed on the lower Susquehanna to bypass the rapids. The first was the Susquehanna Canal , 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

1464-615: The Bay's freshwater inflow. The bay lies in the flooded valley, or ria , of the Susquehanna. The Susquehanna River is one of the oldest existing rivers in the world, being dated as 320–340 Myr , older than the mountain ridges through which it flows. These ridges resulted from the Alleghenian orogeny uplift events, when Africa (as part of Gondwana ) slammed into the Northern part of Euramerica . The Susquehanna basin reaches its ultimate outflow in

1525-521: The Great Lakes. The English of Pennsylvania referred to the Eroni people of Conestoga as "Susquehannocks" or "Susquehannock Indians", a name derived from the Lenape term. In addition, John Smith of Jamestown , Virginia, labeled their settlement as "Sasquesahanough" on his 1612 map when he explored the upper Chesapeake Bay area. In Virginia and other southern colonies, Siouan -speaking tribes constituted

1586-813: The Iroquoian family, as "the stream that falls toward the south" or "long-crooked-river". The Lenape are 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 , Lancaster County). They were called Minquas ("quite different"), or Sisa'we'hak'hanna'lenno'wak ("Oyster-river-people") by others. The Lenape also called

1647-528: 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 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 ,

1708-573: The North Branch flowing from the northwest at Northumberland. Downstream from the confluence of its branches in Northumberland , the river flows south past Selinsgrove , 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,

1769-623: The North Branch of the river. Smith and Cowdery said that they were visited on May 15, 1829, by the resurrected John the Baptist 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

1830-620: 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 to the Erie Canal , which ran through the Mohawk Valley of New York , ultimately connecting with Lake Erie through

1891-858: 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

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1952-658: The United States gaining independence in the Revolutionary War, in 1790 Colonel Timothy Matlack , 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 and

2013-547: The West Branch at Northumberland. The origin of the official West Branch is near Elmora, Pennsylvania , in northern Cambria County near the contemporary junction of Mitchel Road and US Route 219 (locally Plank Road). It travels northeasterly through the towns of Northern Cambria , Cherry Tree , Burnside , Mahaffey and Curwensville (where the river is dammed to form a lake), into and through Clearfield , where it receives Clearfield Creek . The West Branch turns to

2074-630: 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 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. Boats had to climb

2135-593: The area Sisa'we'hak'hanna'unk ("Oyster-river-place"). Peoples of the mid-Atlantic Coast included coastal peoples who spoke Algonquian languages , such as the Lenape (whose bands spoke three dialects of Lenape), and Iroquoian languages -speaking peoples of the interior, such as the Eroni and the Five Nations of the Iroquois League , or Haudenosaunee , based largely in present-day New York and upper Pennsylvania around

2196-557: The back. Eastern Cove includes Ballast Head Harbor on the western side near Ballast Head . Matthew Flinders named Nepean Bay after Sir Evan Nepean, First Secretary to the Admiralty , on 21 March 1802. Settlements on its shores include Kingscote , Brownlow KI and Nepean Bay on the shores of Western Cove, and American River , Baudin Beach and Island Beach on the shores of Eastern Cove. Protected areas located within and adjoining

2257-457: The bay is via a natural channel at its southern end near Beatrice Point. Kingscote Harbour is the sheltered water between Bay of Shoals and Western Cove. The harbour is sheltered by the Beatrice Islets , and it faces the northern part of the town of Kingscote . Western Cove is a body of water whose mouth is located between Beare Point in the west and Morrison Point in the east separated by

2318-464: The bay’s extent include: Bay A bay can be the estuary of a river, such as the Chesapeake Bay , an estuary of the Susquehanna River . Bays may also be nested within each other; for example, James Bay is an arm of Hudson Bay in northeastern Canada . Some large bays, such as the Bay of Bengal and Hudson Bay, have varied marine geology . The land surrounding a bay often reduces

2379-535: 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. Also called the Main Branch Susquehanna , the longer branch of the river rises at

2440-521: The development of sea trade as the safe anchorage they provide encouraged their selection as ports . The United Nations Convention on the Law of the Sea defines a bay as a well-marked indentation in the coastline, whose penetration is in such proportion to the width of its mouth as to contain land-locked waters and constitute more than a mere curvature of the coast. An indentation, however, shall not be regarded as

2501-608: The evacuation of thousands of residents. In September 2011 the Susquehanna River and its communities were hit by Tropical Storm Lee , which caused the worst flooding since Agnes in 1972. 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

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2562-399: The excessive pollution it receives. Most of the pollution in the river is caused by excess animal manure from farming , 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 flowing into the Chesapeake Bay . It

2623-419: The following coastal inlets from west to east - Bay of Shoals, Western Cove and Eastern Cove. Eastern Cove itself includes an inlet consisting of a channel known as American River and a lagoon system known as Pelican Lagoon . The Bay of Shoals is a body of water which is located immediately north of the settlement of Kingscote and whose mouth is located between Cape Rouge in the north and Beatrice Point in

2684-433: The hardest-hit communities and the capital Harrisburg was flooded. The Chesapeake Bay 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 , 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

2745-575: The industrial age progressed, bridges replaced ferries , 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

2806-506: 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 (near present-day Elmira, New York ). This was part of what

2867-442: 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

2928-403: The main stem of the Susquehanna as impaired ." 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

2989-463: The mountains to the markets downriver. In 1779 during the American Revolutionary War , 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 described this event in

3050-406: The northeast. It crosses into northern Maryland approximately 30 miles (48 km) northeast of Baltimore 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 at Havre de Grace . Concord Point Light was built here in 1827 to accommodate the increasing navigational traffic. "Susquehanna" may come from

3111-472: 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 at Sidney . It dips south into Pennsylvania 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

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3172-445: The powerful Five Nations of the Iroquois League 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

3233-462: The red cliffy point, and from there to the head of the cove is a continuous sandy beach. The land at the head of the cove is low and swampy and continues so to Beare Point… Eastern Cove is the body of water whose mouth is located between Morrison Point in the west and Kangaroo Head in the east separated by a distance of about 6 nautical miles (11 km; 6.9 mi). The cove has a maximum depth of 14 metres (46 ft) at its mouth. Its shoreline

3294-407: The river at several locations in Cumberland and York counties. In 1972 the remnants of Hurricane Agnes stalled over the New York-Pennsylvania border, dropping as much as 20 inches (510 mm) 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 , was among

3355-435: 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 area with access to

3416-418: 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 May 1986, ongoing measurements from several monitoring stations along the river near Three Mile Island, Peach Bottom and Calvert Cliffs detected iodine-131 beta particles attributable to fallout from

3477-440: The south over a distance of about 5 kilometres (3.1 mi). The bay has a maximum charted depth of 2.7 metres (8 ft 10 in). Its mouth is bounded by a spit known as 'The Spit' which extends from Cape Rouge to within 0.5 nautical miles (0.93 km; 0.58 mi) of Beatrice Point, includes the islets of Busby and Beatrice and is reported as being exposed during local tides, i.e. ‘drying.’ Access for watercraft into

3538-489: The southeast and passes Karthaus (at Mosquito Creek), Keating (at Sinnemahoning Creek), Renovo and Lock Haven , where it receives Bald Eagle Creek . At Jersey Shore, Pennsylvania, Pine Creek, the largest tributary of the West Branch Susquehanna River, is received. Pine Creek has the largest watershed of all the West Branch’s tributaries. It passes Williamsport , where both Lycoming Creek and Loyalsock Creek empty into it, then turns south, passing Lewisburg , before joining

3599-421: The strength of winds and blocks waves . Bays may have as wide a variety of shoreline characteristics as other shorelines. In some cases, bays have beaches , which "are usually characterized by a steep upper foreshore with a broad, flat fronting terrace". Bays were significant in the history of human settlement because they provided easy access to marine resources like fisheries . Later they were important in

3660-412: 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

3721-400: 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 left New York and went to Canada as refugees; casualties from exposure and starvation were high that winter. Following

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