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115-820: The Patowmack Canal , sometimes called the Potomac Canal , is a series of five inoperative canals located in Maryland and Virginia , United States , that was designed to bypass rapids in the Potomac River upstream of the present Washington, D.C. , area. The most well known of them is the Great Falls skirting canal, whose remains are managed by the National Park Service since it is within Great Falls Park , an integral part of

230-547: A caisson of water in which boats float while being moved between two levels; and inclined planes where a caisson is hauled up a steep railway. To cross a stream, road or valley (where the delay caused by a flight of locks at either side would be unacceptable) the valley can be spanned by a navigable aqueduct – a famous example in Wales is the Pontcysyllte Aqueduct (now a UNESCO World Heritage Site ) across

345-510: A drainage divide atop a ridge , generally requiring an external water source above the highest elevation . The best-known example of such a canal is the Panama Canal . Many canals have been built at elevations, above valleys and other waterways. Canals with sources of water at a higher level can deliver water to a destination such as a city where water is needed. The Roman Empire 's aqueducts were such water supply canals. The term

460-415: A "cistern", or depressed area just downstream from the fall, to "cushion" the water by providing a deep pool for its kinetic energy to be diffused in. Vertical falls work for drops of up to 1.5 m in height, and for discharge of up to 15 cubic meters per second. The transport capacity of pack animals and carts is limited. A mule can carry an eighth-ton [250 pounds (113 kg)] maximum load over

575-710: A Virginia Historic Landmark. The remains of the Seneca canal still exist on the Virginia side, opposite Violette's lock (on the C&;O Canal). Great Falls Park is open to the public daily, with an admission fee. Safety is a primary concern in the Park. Prohibited activities include alcohol, open fires, swimming, wading or crossing of any open water. Sporting activities such as rock climbing and kayaking at Great Falls Park should be conducted only by experienced persons familiar with

690-496: A canal has a series of dams and locks that create reservoirs of low speed current flow. These reservoirs are referred to as slack water levels , often just called levels . A canal can be called a navigation canal when it parallels a natural river and shares part of the latter's discharges and drainage basin , and leverages its resources by building dams and locks to increase and lengthen its stretches of slack water levels while staying in its valley . A canal can cut across

805-535: A channel through the rock cliffs for the final three locks. The canal is 1,820 yards long and was completed in 1801, and opened to traffic in 1802. Its five locks raised or lowered boats to skirt around Great Falls, and were constructed of red sandstone from the Seneca Quarry across the river in Maryland. Locking through the whole canal could be accomplished in about an hour. An entire town grew up around

920-413: A combination of the three, depending on available water and available path: Smaller transportation canals can carry barges or narrowboats , while ship canals allow seagoing ships to travel to an inland port (e.g., Manchester Ship Canal ), or from one sea or ocean to another (e.g., Caledonian Canal , Panama Canal ). At their simplest, canals consist of a trench filled with water. Depending on

1035-673: A connection between the Great Lakes and the Eastern Seaboard . The Patowmack Company folded in 1828, turning over its assets and liabilities to the newly formed C&O Canal Company. The new company abandoned the Patowmack Canal (except for the section at Little Falls) in 1830 for an even more ambitious undertaking: a man-made waterway stretching from Georgetown to Pittsburgh. Although the Patowmack Company

1150-749: A convention in Annapolis in 1786 "to consider how far a uniform system in their commercial regulations may be necessary to their common interest." The Annapolis Convention led to a general meeting in Philadelphia the following May. Thus, George Washington's lobbying for interstate cooperation on the Potomac helped prepare the way for the Constitutional Convention of 1787. Five skirting canals were made: Little Falls, Great Falls, Seneca Falls (across from Seneca Creek), Payne's Falls of

1265-442: A day, vegetables, and a "reasonable allowance of whiskey", $ 8 to $ 12 per month, $ 20 for masons. Still, many were dissatisfied with the slave-like conditions. Friction between the largest groups, from Ireland and Germany, meant they had to be kept in different crews. The width of the canal prism above Harpers Ferry was reduced to 50 feet (15 m), which saved money and was also appropriate from an engineering standpoint. In 1832,

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1380-492: A direct, long-distance trade network came true. His frequent toast, " Success to the navigation of the Potomac! " became a footnote of American history. In 1930 the U.S. Congress authorized the canals as a park. The National Park Service took on responsibility for its management in 1966. The preservation of the Patowmack Canal is part of the Park Service's continuing efforts to protect and preserve special resources of

1495-534: A falling down of the bottom of the Canal into limestone caverns that are lower than, and extend out under the bed of the river: — in consequence of which the water from the Canal is at first conducted down below the canal bottom perhaps twenty or thirty feet and thence out along under the bed of the river ... It has been a matter of surprise to me that our Canal thus far has suffered so little from limesinks. We may yet however have much trouble from this source near and above

1610-549: A journey measured in days and weeks, though much more for shorter distances and periods with appropriate rest. Besides, carts need roads. Transport over water is much more efficient and cost-effective for large cargoes. The oldest known canals were irrigation canals, built in Mesopotamia c.  4000 BC , in what is now Iraq . The Indus Valley civilization of ancient India ( c.  3000 BC ) had sophisticated irrigation and storage systems developed, including

1725-567: A lift of 37 feet. The first two locks were named "Martha" and "George" (after Martha Washington and George Washington). This canal was later repurposed for the Chesapeake and Ohio Canal (C&O), partially as Feeder #1, and as the canal itself from Lock 5 to just before Fletcher's Boat House. The remains of the stone locks were destroyed when the Baltimore and Ohio Railroad (B&O) built its Georgetown Branch line c. 1910. (The rail line

1840-411: A light boat was 62 hours, set by Raleigh Bender from Sharpsburg. Dent Shupp made it from Cumberland to Williamsport in 35 hours with 128 tons of coal. Following the disastrous flood of 1889, the canal company entered receivership with court-appointed trustees. The trustees were given the right to repair and operate the canal under continued court oversight. The trustees represented the majority owners of

1955-528: A market, grist mill , sawmill , foundry , inn , ice house , workers' barracks , boarding houses , and a sprinkling of small homes. Boaters stopped here to wait their turn through the locks, to change cargo, or to enjoy an evening in town before continuing their journey. Thousands of boats locked through at Great Falls, carrying flour , whiskey , tobacco , and iron downstream; carrying cloth , hardware , firearms , and other manufactured products upstream. Vessels varied from crudely constructed rafts to

2070-581: A rather low gradient for its time. The canal is still in use after renovation. In the Middle Ages , water transport was several times cheaper and faster than transport overland. Overland transport by animal drawn conveyances was used around settled areas, but unimproved roads required pack animal trains, usually of mules to carry any degree of mass, and while a mule could carry an eighth ton, it also needed teamsters to tend it and one man could only tend perhaps five mules, meaning overland bulk transport

2185-459: A uniform altitude. Other, generally later, canals took more direct routes requiring the use of various methods to deal with the change in level. Canals have various features to tackle the problem of water supply. In cases, like the Suez Canal, the canal is open to the sea. Where the canal is not at sea level, a number of approaches have been adopted. Taking water from existing rivers or springs

2300-422: Is a channel that cuts across a drainage divide , making a navigable channel connecting two different drainage basins . Both navigations and canals use engineered structures to improve navigation: Since they cut across drainage divides, canals are more difficult to construct and often need additional improvements, like viaducts and aqueducts to bridge waters over streams and roads, and ways to keep water in

2415-701: Is presumed, introduced in Italy by Bertola da Novate in the 16th century. This allowed wider gates and also removed the height restriction of guillotine locks . To break out of the limitations caused by river valleys, the first summit level canals were developed with the Grand Canal of China in 581–617 AD whilst in Europe the first, also using single locks, was the Stecknitz Canal in Germany in 1398. In

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2530-599: Is rarely less than 30 metres (98 ft) wide. In the 5th century BC, Achaemenid king Xerxes I of Persia ordered the construction of the Xerxes Canal through the base of Mount Athos peninsula, Chalkidiki , northern Greece. It was constructed as part of his preparations for the Second Persian invasion of Greece , a part of the Greco-Persian Wars . It is one of the few monuments left by

2645-418: Is steeper than the desired canal gradient. They are constructed so the falling water's kinetic energy is dissipated in order to prevent it from scouring the bed and sides of the canal. A canal fall is constructed by cut and fill . It may be combined with a regulator, bridge, or other structure to save costs. There are various types of canal falls, based on their shape. One type is the ogee fall, where

2760-452: Is the pound lock , which consists of a chamber within which the water level can be raised or lowered connecting either two pieces of canal at a different level or the canal with a river or the sea. When there is a hill to be climbed, flights of many locks in short succession may be used. Prior to the development of the pound lock in 984 AD in China by Chhaio Wei-Yo and later in Europe in

2875-684: Is the bed of the Little Falls Skirting Canal. The Shenandoah canal (i.e. canal on the Shenandoah River) was still used occasionally, and was the reason why the C&O canal had to build the Shenandoah river lock (just below Lock 33) at Harper's Ferry, to get cooperation from the Virginia state legislature. Boats were to leave the C&O Canal, with the mules crossing over the B&;O railroad bridge, bringing them to

2990-674: The Allegheny Mountains into the United States and "bind those people to us by a chain which never can be broken." "The way," Washington wrote, "is easy and dictated by our clearest interest. It is to open a wide door, and make a smooth way for the produce of that Country to pass to our Markets." As a waterway west, the Potomac River could be that "door." It was the shortest potential route between Tidewater , with access to East Coast and trans-Atlantic trade, and

3105-658: The Elbe , Oder and Weser being linked by canals. In post-Roman Britain, the first early modern period canal built appears to have been the Exeter Canal , which was surveyed in 1563, and open in 1566. The oldest canal in the European settlements of North America, technically a mill race built for industrial purposes, is Mother Brook between the Boston, Massachusetts neighbourhoods of Dedham and Hyde Park connecting

3220-628: The George Washington Memorial Parkway . The first section of the canal opened in 1795, and the canal ended operations in 1828. Few ventures were dearer to George Washington than his plan to make the Potomac River navigable as far as the Ohio River Valley. In the uncertain period after the Revolutionary War , Washington believed that better transportation and trade would draw lands west of

3335-669: The Lehigh Canal for their full year of business in 1820. Yet in 1850, the B&O Railroad had already been operating in Cumberland for eight years, and the Canal suffered financially. Debt-ridden, the company dropped its plan to continue construction of the next 180 miles (290 km) of the canal into the Ohio Valley. The company long realized (especially with the experience at the Paw Paw tunnel) that construction over

3450-543: The Naviglio Grande built between 1127 and 1257 to connect Milan with the river Ticino . The Naviglio Grande is the most important of the lombard " navigli " and the oldest functioning canal in Europe. Later, canals were built in the Netherlands and Flanders to drain the polders and assist transportation of goods and people. Canal building was revived in this age because of commercial expansion from

3565-555: The Patowmack Canal and in the Potomac River . Gondolas were 60 by 10 ft (18 by 3 m) log rafts, usually sold at journey's end for their wood by their owners, who returned upstream on foot. Sharpers were flat-bottomed boats, 60 by 7 ft (18 by 2 m), usable only on high-water days, about 45 days per year. The Erie Canal , built between 1817 and 1825, threatened traders south of New York City, who began to seek their own transportation infrastructure to link

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3680-545: The Phoenix metropolitan area was the most complex in ancient North America. A portion of the ancient canals has been renovated for the Salt River Project and now helps to supply the city's water. The Sinhalese constructed the 87 km (54 mi) Yodha Ela in 459 A.D. as a part of their extensive irrigation network which functioned in a way of a moving reservoir due to its single banking aspect to manage

3795-599: The Potowmack Company to improve the navigability of the Potomac River. His company built five skirting canals around the major falls: Little Falls (later incorporated in the C&O Canal), Great Falls in Virginia , Seneca Falls (opposite Violette's lock), Payne's Falls of the Shenandoah, and House's Falls near Harpers Ferry . These canals allowed an easy downstream float; upstream journeys, propelled by pole, were harder. Several kinds of watercraft were used on

3910-528: The River Brue at Northover with Glastonbury Abbey , a distance of about 1.75 kilometres (1,900 yd). Its initial purpose is believed to be the transport of building stone for the abbey, but later it was used for delivering produce, including grain, wine and fish, from the abbey's outlying properties. It remained in use until at least the 14th century, but possibly as late as the mid-16th century. More lasting and of more economic impact were canals like

4025-614: The Songhai Empire of West Africa, several canals were constructed under Sunni Ali and Askia Muhammad I between Kabara and Timbuktu in the 15th century. These were used primarily for irrigation and transport. Sunni Ali also attempted to construct a canal from the Niger River to Walata to facilitate conquest of the city but his progress was halted when he went to war with the Mossi Kingdoms . Around 1500–1800

4140-632: The Washington City Canal , which extended through the future National Mall to the foot of the United States Capitol . A lock keeper's house at the eastern end of this Washington Branch of the C&O Canal remains at the southwest corner of Constitution Avenue and 17th Street, N.W., at the edge of the National Mall. In 1834, the section to Harper's Ferry opened and the canal reached Williamsport. In 1836,

4255-724: The Youghiogheny River ; and the western section from there to Pittsburgh. The total estimated price tag, more than $ 22 million, dampened the enthusiasm of many supporters, who were expecting an estimate in the $ 4 million to $ 5 million range. At a convention in December 1826, they attempted to discredit the engineers' report, and offered lower estimates: Georgetown to Cumberland, $ 5,273,283; Georgetown to Pittsburgh, $ 13,768,152. Geddes and Roberts were hired to make another report, which they gave in 1828: $ 4,479,346.93 for Georgetown to Cumberland. With those numbers to encourage them,

4370-556: The reservoirs built at Girnar in 3000 BC. This is the first time that such planned civil project had taken place in the ancient world. In Egypt , canals date back at least to the time of Pepi I Meryre (reigned 2332–2283 BC), who ordered a canal built to bypass the cataract on the Nile near Aswan . In ancient China , large canals for river transport were established as far back as the Spring and Autumn period (8th–5th centuries BC),

4485-404: The stratum the canal passes through, it may be necessary to line the cut with some form of watertight material such as clay or concrete. When this is done with clay, it is known as puddling . Canals need to be level, and while small irregularities in the lie of the land can be dealt with through cuttings and embankments, for larger deviations other approaches have been adopted. The most common

4600-471: The 12th century. River navigations were improved progressively by the use of single, or flash locks . Taking boats through these used large amounts of water leading to conflicts with watermill owners and to correct this, the pound or chamber lock first appeared, in the 10th century in China and in Europe in 1373 in Vreeswijk , Netherlands. Another important development was the mitre gate , which was, it

4715-472: The 15th century, either flash locks consisting of a single gate were used or ramps, sometimes equipped with rollers, were used to change the level. Flash locks were only practical where there was plenty of water available. Locks use a lot of water, so builders have adopted other approaches for situations where little water is available. These include boat lifts , such as the Falkirk Wheel , which use

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4830-405: The 4-mile marker. Building the last 50-mile (80 km) segment proved difficult and expensive. Allen Bowie Davis took on the role of management. In Cumberland, Dam No. 8 and Guard Lock No. 8 had begun construction in 1837 and the final locks (70–75) to Cumberland were completed around 1840. That left an 18.5-mile (29.8 km) segment in the middle, which would eventually require building

4945-577: The B&O from trying to sell it. In 1936, the B&O attempted to sell part of the canal from Point of Rocks to the District line. This was blocked by the courts which had continued to oversee the C&O trustees with the court saying "It is of course well known that the Baltimore and Ohio Railroad Company is not the owner of the Chesapeake and Ohio Canal." At that time, the court also stated that

5060-590: The C&O Canal Company bonds issued in 1844. While the B&O owned the majority of the 1878 bonds, the B&O did not own a majority of the 1844 bonds as of 1890. However, by 1903, the B&O had acquired sufficient bonds to become "a majority holder", the reported reason being "to secure for the Wabash [railroad] system a foothold on the Atlantic seaboard" which had only been incorporated in February 1903. Over

5175-487: The C&O Canal and the Baltimore and Ohio Railroad (B&O) began fighting for sole use of the narrow strip of available land along the Potomac River from Point of Rocks to Harpers Ferry . After a Maryland state court battle that involved Daniel Webster and Roger B. Taney , the companies agreed to share the right-of-way . In August 1829, the canal company began importing indentured laborers to Alexandria and Georgetown. These workers were promised meat three times

5290-482: The Company; many of them had become entirely unfit for use and were becoming worthless, rendering it absolutely essential to the requirements of the Company to have them repaired." Still, some improvements were made in the late 1860s, such as replacing Dams No. 4 and 5. The early 1870s, which Unrau calls the "Golden Years", were particularly profitable. The company repaid some of its bonds. It made many improvements to

5405-629: The Patowmack Little Falls Skirting Canal) was sufficient since that literally fulfilled the charter's condition of reaching the tidewater, but people in Washington wanted it to end in Washington, connecting to the Tiber Creek and Anacostia river. For that reason, the canal originally opened from Little Falls to Seneca, and the next year, was extended down to Georgetown. The Little Falls skirting canal, which

5520-407: The Paw Paw tunnel, digging the deep cut at Oldtown, and building 17 locks. Near Paw Paw, the engineers had no good solutions. If they followed the river, they would have to cross over to West Virginia to avoid the cliffs, and an agreement with the B&O Railroad specified that the canal would avoid the south side of the river, unless it was a place where the railroad would not need it. So they took

5635-590: The Persian Empire in Europe . Greek engineers were also among the first to use canal locks , by which they regulated the water flow in the Ancient Suez Canal as early as the 3rd century BC. There was little experience moving bulk loads by carts, while a pack-horse would [i.e. 'could'] carry only an eighth of a ton. On a soft road a horse might be able to draw 5/8ths of a ton. But if

5750-407: The Shenandoah, letting them go through the canal there. George Washington did not live to see the completion of the navigation project that had been his obsession since youth. But he did take pride in visiting the canal during the construction to inspect its progress. He died in 1799, two years before the canal opened at Great Falls. But in the long run Washington's vision of a strong nation linked by

5865-565: The Shenendoah, and House Falls, (near Harpers Ferry, Virginia , now West Virginia ). Three of the canals did not require locks: the Seneca Falls, House Falls, and Payne's Falls. Little Falls used wooden locks, which were not meant to be permanent. At Great Falls, the Potomac presented physical obstacles to travel as well. Narrow and winding in places, it drops over 600 feet in 200 miles from Cumberland to sea level . Spring rains swell

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5980-785: The Southwest by 1300 CE. Archaeologists working at a major archaeological dig in the 1990s in the Tucson Basin, along the Santa Cruz River, identified a culture and people that may have been the ancestors of the Hohokam. This prehistoric group occupied southern Arizona as early as 2000 BCE, and in the Early Agricultural period grew corn, lived year-round in sedentary villages, and developed sophisticated irrigation canals. The large-scale Hohokam irrigation network in

6095-471: The autumn. Built to support the canal industry, Matildaville's fate was tied to that of the Patowmack Company. Today, only a few fragile remains of Matildaville are visible. The greatest obstacle to the Patowmack project proved to be financial. High construction costs, particularly at the Great Falls section, and insufficient revenues bankrupted the company. Extremes of high and low water restricted use of

6210-400: The board to change their plans, routing the canal through the center of town. The canal was opened for trade to Cumberland on Thursday, October 10, 1850. On the first day, five canal boats, Southampton, Elizabeth, Ohio, Delaware and Freeman Rawdon loaded with a total of 491 tons of coal, came down from Cumberland. In one day, the C&O carried more coal in the first day of business than

6325-483: The breach at Lock No. 37. For about a mile, there is scarcely a hundred feet in length of the canal in which there are not several small lime sink holes...". He recommended costly but necessary repairs, which were done by 1840. Since it was difficult to obtain stone for the locks, engineers built composite locks , sometimes of kyanized wood. In 1843, the Potomac Aqueduct Bridge was built near

6440-540: The burgeoning areas west of the Appalachian Mountains to mid-Atlantic markets and ports. As early as 1820, plans were being laid for a canal to link the Ohio River and Chesapeake Bay. In early March 1825, President James Monroe signed the bill chartering the construction of the C&O Canal as one of the last acts of his presidency. The plan was to build it in two sections, the eastern section from

6555-412: The canal company prohibited liquor in a bid to improve the speed of construction, but soon repealed its ban. In August or September 1832, an epidemic of cholera swept through the construction camps, killing many workers and leading others to throw down their tools and flee. By 1833, the canal's Georgetown end was extended 1.5 miles (2.4 km) eastward to Tiber Creek , near the western terminus of

6670-400: The canal could not be sold in pieces but only in its entirety. In 1938, new trustees were appointed by the court to handle the sale under the court's continued oversight. Tolls were charged for cargo on the canal. In 1851, for instance, the toll rates on the Canal were set as follows: Tolls varied greatly, and frequently the board adopted new toll rates. Some boatmen would try to ship in

6785-436: The canal pressure with the influx of water. It was also designed as an elongated reservoir passing through traps creating 66 mini catchments as it flows from Kala Wewa to Thissa Wawa . The canal was not designed for the quick conveying of water from Kala Wewa to Thissa Wawa but to create a mass of water between the two reservoirs, which would in turn provided for agriculture and the use of humans and animals. They also achieved

6900-418: The canal to form a dam. They are generally placed in pre-existing grooves in the canal bank. On more modern canals, "guard locks" or gates were sometimes placed to allow a section of the canal to be quickly closed off, either for maintenance, or to prevent a major loss of water due to a canal breach. A canal fall , or canal drop, is a vertical drop in the canal bed. These are built when the natural ground slope

7015-419: The canal to only a month or two each year. The tolls collected could not even pay interest on the company debt. They planned to make more improvements on other major branches of the Potomac but doing so did nothing to increase the company's revenues. They issued more stock, borrowed from banks, and even tried a lottery all to no avail. The Erie Canal opened in 1825, and immediately became a rival, controlling

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7130-472: The canal was used by canal packets as a Star Route to carry mail from Georgetown to Shepherdstown . The contract was held by Albert Humrickhouse at $ 1,000 per annum for a daily service of 72 book miles. The canal approached Hancock, Maryland , by 1839. In March 1837, three surveys were made for a possible link to the northeast to Baltimore: via Westminster, via Monocacy -Linganore, and via Seneca, but they were all deemed impractical due to lack of water at

7245-427: The canal, including the installation of a telephone system. Yet there were still floods and other problems. By 1872, so many vessels were unfit for navigation that the company required boats to undergo annual inspections and registration. In July 1876, the crew of the Lezan Ragan stayed afloat while loading in Cumberland only by her crew's pumping. She hit some abutments of the locks near Great Falls, and finally sank at

7360-462: The canal. Where large amounts of goods are loaded or unloaded such as at the end of a canal, a canal basin may be built. This would normally be a section of water wider than the general canal. In some cases, the canal basins contain wharfs and cranes to assist with movement of goods. When a section of the canal needs to be sealed off so it can be drained for maintenance stop planks are frequently used. These consist of planks of wood placed across

7475-409: The channel. There are two broad types of canal: Historically, canals were of immense importance to commerce and the development, growth and vitality of a civilization. In 1855 the Lehigh Canal carried over 1.2 million tons of anthracite coal; by the 1930s the company which built and operated it for over a century ceased operation. The few canals still in operation in our modern age are a fraction of

7590-430: The completion of a 50-mile (80 km) stretch to Cumberland, although the Baltimore and Ohio Railroad had already reached Cumberland in 1842. The canal had an elevation change of 605 feet (184 meters) which required 74 canal locks , 11 aqueducts to cross major streams, more than 240 culverts to cross smaller streams, and the 3,118 ft (950 m) Paw Paw Tunnel . A planned section to the Ohio River at Pittsburgh

7705-403: The construction site to serve as headquarters for the Patowmack Company and home for the workers. The town was named Matildaville by its founder, the Revolutionary War hero Light Horse Harry Lee . Harry Lee, the father of Robert E. Lee , named the town for his first wife, Matilda Lee. This canal was 1,320 yards long and despite going down 7 feet, had no locks, and is on the Virginia side. This

7820-458: The cross section of the canal prism in difficult terrain. This reduced maintenance expenditures but increased construction costs. In the end, two slackwaters (Big Slackwater above Dam No. 4, and Little Slackwater above Dam No. 5) and multiple composite locks (Locks 58–71) were built. At first, the canal company planned to use steamboats in the slackwaters, since without mules, the canal boats had to use oars to move upstream. After much discussion of

7935-405: The dangers and safety protocols involved therein. These are dangerous grounds and accidental deaths are not uncommon. The park had 27 deaths between 2001 and 2013. The Patowmack Canal Trail is accessible by wheelchair as far as Lock 1. The trail surface consists of compacted soil with no curbs. The National Park Service opened a wheelchair accessible overlook to the Great Falls in January 2005 and

8050-475: The dangers of early steamboats, the company provided a towpath so that the mules could pull the boats through the slackwaters. From Lock 5 at Little Falls to Cumberland (as mentioned above, the canal started at Little Falls, and was later extended down to Georgetown), the canal was divided into three divisions (of about 60 miles (100 km) apiece), each of which was further divided into 120 sections of about 0.5 miles (800 m). A separate construction contract

8165-399: The drop follows an s-shaped curve to create a smooth transition and reduce turbulence . However, this smooth transition does not dissipate the water's kinetic energy, which leads to heavy scouring. As a result, the canal needs to be reinforced with concrete or masonry to protect it from eroding. Another type of canal fall is the vertical fall, which is "simple and economical". These feature

8280-614: The first summit level canal to use pound locks in Europe was the Briare Canal connecting the Loire and Seine (1642), followed by the more ambitious Canal du Midi (1683) connecting the Atlantic to the Mediterranean. This included a staircase of 8 locks at Béziers , a 157 metres (515 ft) tunnel, and three major aqueducts. Canal building progressed steadily in Germany in the 17th and 18th centuries with three great rivers,

8395-462: The freedom to make deliveries well away from rail lined road beds or ditches in the dirt which could not operate in the winter. The longest extant canal today, the Grand Canal in northern China, still remains in heavy use, especially the portion south of the Yellow River . It stretches from Beijing to Hangzhou at 1,794 kilometres (1,115 miles). Canals are built in one of three ways, or

8510-556: The headwaters of the Ohio River, with access to the western frontier. But both political and physical obstacles had to be overcome. Opening the Potomac required cooperation of Virginia and Maryland , both of which bordered the river. In 1784, Washington convinced the states' assemblies to establish a company to improve the Potomac between its headwaters near Cumberland, Maryland , and tidewater at Georgetown . The Patowmack Company , organized May 17, 1785, drew directors and subscribers from both states. Then, Washington wrote in his diary,

8625-744: The higher waters of the Charles River and the mouth of the Neponset River and the sea. It was constructed in 1639 to provide water power for mills. In Russia, the Volga–Baltic Waterway , a nationwide canal system connecting the Baltic Sea and Caspian Sea via the Neva and Volga rivers, was opened in 1718. Chesapeake and Ohio Canal Construction began in 1828 on the 184.5-mile (296.9 km) canal and ended in 1850 with

8740-549: The load were carried by a barge on a waterway, then up to 30 tons could be drawn by the same horse. — technology historian Ronald W. Clark referring to transport realities before the industrial revolution and the Canal age . Hohokam was a society in the North American Southwest in what is now part of Arizona , United States, and Sonora , Mexico. Their irrigation systems supported the largest population in

8855-602: The long narrow "sharper," a keelboat that could carry up to 20 tons of cargo. The trip took 3 to 5 days down to Georgetown and 10 to 12 days poling against the current back to Cumberland. Many boat owners simply sold their boats for scrap and walked back instead. Here is a sample of what was carried down in 1811: Also carried in 1811 were firearms, pig iron, timber, rye, flax seed, hemp, butter oats, cloverseed, and staves. Gondolas were one-use log rafts, about 60 by 10 feet, and held many tons of cargo. Sharpers were flatbottomed boats 60 feet by 7 feet. These also were poled down

8970-480: The longest canal in the world today and the oldest extant one. It is 1,794 kilometres (1,115 mi) long and was built to carry the Emperor Yang Guang between Zhuodu ( Beijing ) and Yuhang ( Hangzhou ). The project began in 605 and was completed in 609, although much of the work combined older canals, the oldest section of the canal existing since at least 486 BC. Even in its narrowest urban sections it

9085-534: The longest one of that period being the Hong Gou (Canal of the Wild Geese), which according to the ancient historian Sima Qian connected the old states of Song, Zhang, Chen, Cai, Cao, and Wei. The Caoyun System of canals was essential for imperial taxation, which was largely assessed in kind and involved enormous shipments of rice and other grains. By far the longest canal was the Grand Canal of China , still

9200-598: The mid-1870s that improved technology, specifically with larger locomotives and air brakes , allowed the railroad to set rates lower than the canal, and thus seal its fate. Sometime after the canal opened in 1850, a commemorative obelisk was erected near its Georgetown terminus. The canal deteriorated during the Civil War. In 1869, the company's annual report said, "During the last ten years little or nothing had been done toward repairing and improving lock-houses, culverts, aqueducts, locks, lock-gates and waste weirs of

9315-406: The more expensive decision to build a tunnel through the mountain. The initial cost estimate of $ 33,500 proved far too low. The tunnel was completed for $ 616,478.65 Among the components of the project, a kiln was built to provide bricks to line the tunnel. Originally, the company intended to go around Cumberland, behind the town of Wills Creek, but complaints from the citizens and the city caused

9430-541: The mountains going to Pittsburgh was "wildly unrealistic". Occasionally there was talk of continuing the canal, e.g. in 1874, an 8.4-mile (13.5 km) long tunnel was proposed to go through the Allegheny Mountains. Nevertheless, there was a tunnel built to connect with the Pennsylvania canal. Even though the railroad beat the canal to Cumberland, the canal was not entirely obsolete. It wasn't until

9545-407: The next decade, and particularly after 1902, boats on the canal shifted from independent operators to company-owned craft. Boats with colorful names ( Bertha M. Young or Lezen Ragan ) gave way to numbered craft ("Canal Towage Company" with a number) run by a schedule. Despite the B&O's status as a majority bondholder, the B&O can not be said to have ever owned the C&O. This did not stop

9660-506: The numbers that once fueled and enabled economic growth, indeed were practically a prerequisite to further urbanization and industrialization. For the movement of bulk raw materials such as coal and ores are difficult and marginally affordable without water transport. Such raw materials fueled the industrial developments and new metallurgy resulting of the spiral of increasing mechanization during 17th–20th century, leading to new research disciplines, new industries and economies of scale, raising

9775-567: The office of president of the Patowmack Company "fell upon me." He presided over the project until he became the nation's chief executive (President of the United States). Delegates from Virginia and Maryland, meeting at Washington's home in 1785, drew up the Mount Vernon Compact, providing for free trade on the river. Virginia and Maryland legislators ratified the compact and then invited all 13 states to send delegates to

9890-412: The opening Lock 15 (at the head of Widewater). For a brief period in the 1860s and 1870s, the company attempted to prevent boating on Sundays. But boatmen broke padlocks on the lock gates and turned to violence when confronted. The company gave up trying to enforce the rule. The trip from Cumberland to Georgetown generally took about seven days. The fastest known time from Georgetown to Cumberland for

10005-525: The park. The Patowmack Canal and Matildaville ruins are protected by the Archaeological Resources Protection Act of 1979. This law prohibits excavation, removal, or displacement of archaeological resources. The significance of the Patowmack Canal in the development of the young nation is evident in its designation as a National Historic Landmark. The Patowmack Canal is a National Historic Civil Engineering Landmark , and

10120-604: The pre-railroad days of the industrial revolution, water transport was the gold standard of fast transportation. The first artificial canal in Western Europe was the Fossa Carolina built at the end of the 8th century under personal supervision of Charlemagne . In Britain, the Glastonbury Canal   is believed to be the first post-Roman canal and was built in the middle of the 10th century to link

10235-477: The present-day Francis Scott Key Bridge to connect the canal to the Alexandria Canal , which led to Alexandria, Virginia . In April 1843, floods damaged much of the finished portion of the canal between Georgetown and Harpers Ferry, including the Shenandoah river lock. One flood suspended navigation for 103 days. The company raised the embankments around Little Falls, and made a "tumbling waste" near

10350-477: The river to dangerous heights; summer droughts can render it impassable. To make the river navigable by even shallow draft boats, the Patowmack Company had to dredge portions of the riverbed and skirt five areas of falls. The Little Falls canal ran 3814 yards on the Maryland side of the river. The original locks, near today's Fletcher's Boat House , were made of wood, and the canal was finished in 1795. These wooden locks were replaced with stone locks in 1817, and had

10465-486: The river, but were not used as much, since they could only get through the shallows of the Potomac 45 days per year during spring flooding. Wrecks and loss of cargo were probably frequent, since it is written that the people of Cooney (a hamlet near Little Falls) was well supplied with coal, flour, meat (etc.) from wrecks. Although the charter required year-round operation, the canal operated seasonally, from February until May. Summer droughts shut down operation until rains in

10580-480: The standard of living for any industrialized society. Most ship canals today primarily service bulk cargo and large ship transportation industries, whereas the once critical smaller inland waterways conceived and engineered as boat and barge canals have largely been supplanted and filled in, abandoned and left to deteriorate, or kept in service and staffed by state employees, where dams and locks are maintained for flood control or pleasure boating. Their replacement

10695-455: The stockholders formally organized the Chesapeake and Ohio Canal Company in June 1828. In the end, the final construction cost to Cumberland in 1850 was $ 11,071,075.21. Compared to the original cost given by the engineers in 1826 of about $ 8 million, removing things not in the estimate such as land purchases, engineering expenses, incidental damages, salaries, and fencing provision, the cost overrun

10810-475: The summit level. The Canal reached Dam No. 6 (west of Hancock) in 1839. As the canal approached Hancock, more construction problems surfaced. Limestone sinkholes and caverns caused the canal bottom to cave in near Shepherdstown, near Two Locks above Dam No. 4, around Four Locks, Big pool, and Roundtop Hill near Dam No. 6. On 6 December 1839, Chief Engineer Fisk wrote, "These breaks have all evidently been occasioned by limestone sinks which exhibit themselves by

10925-472: The tidewater of Washington, D.C., to Cumberland, Maryland; and the western section over the Allegheny Mountains to the Ohio River or one of its tributaries. Free from taxation, the canal company was required to have 100 miles (160 km) in use in five years, and to complete the canal in 12 years. The canal was engineered to have a 2 miles per hour (3 km/h) water current, supplying the canal and assisting mules pulling boats downstream. The eastern section

11040-453: The time required to locate, build, and begin occupying a new federal city, Washington, D.C. , ten miles downriver. Construction required engineering skills and a labor force not easily found in 18th century America. Crews consisted of unskilled laborers, skilled indentured servants, and slaves rented from nearby plantations. The work was difficult and dangerous. With one of the earliest uses in this country of black-powder blasting, workers forced

11155-573: The valley of the River Dee . Another option for dealing with hills is to tunnel through them. An example of this approach is the Harecastle Tunnel on the Trent and Mersey Canal . Tunnels are only practical for smaller canals. Some canals attempted to keep changes in level down to a minimum. These canals known as contour canals would take longer, winding routes, along which the land was

11270-554: Was a financial failure, its builders pioneered lock engineering and stimulated a wave of canal construction important to the country's development. Groundbreaking for the C&O Canal took place close to Lock 6, near the upstream side of the Little Falls Skirting Canal. In the end, the Little Falls skirting canal was modified and repurposed for the C&O Canal prism as well as becoming its feeder canal (Inlet #1), after some modifications. From Lock 5 to almost Fletcher's Boat House

11385-476: Was about 19%, which can be justified by the inflation rate of the period. The cost overrun of the other proposal (Geddes and Roberts) was about 51% thus showing that the original engineer's estimate was good. In 1824, the holdings of the Patowmack Company were ceded to the Chesapeake and Ohio Company. (Rejected names for the canal included the "Potomac Canal" and "Union Canal". ) By 1825, the Canal Company

11500-466: Was also expensive, as men expect compensation in the form of wages, room and board. This was because long-haul roads were unpaved, more often than not too narrow for carts, much less wagons, and in poor condition, wending their way through forests, marshy or muddy quagmires as often as unimproved but dry footing. In that era, as today, greater cargoes, especially bulk goods and raw materials , could be transported by ship far more economically than by land; in

11615-458: Was an option in some cases, sometimes supplemented by other methods to deal with seasonal variations in flow. Where such sources were unavailable, reservoirs  – either separate from the canal or built into its course – and back pumping were used to provide the required water. In other cases, water pumped from mines was used to feed the canal. In certain cases, extensive "feeder canals" were built to bring water from sources located far from

11730-642: Was authorized by an act of the General Assembly of Maryland in the amount of subscriptions of $ 500,000; this paved the way for future investments and loans. According to historians, those financial resources were expended until the State had prostrated itself on its own credit. The C&O's first chief engineer was Benjamin Wright , formerly chief engineer of the Erie Canal . A groundbreaking ceremony

11845-407: Was gradual, beginning first in the United States in the mid-1850s where canal shipping was first augmented by, then began being replaced by using much faster , less geographically constrained & limited, and generally cheaper to maintain railways . By the early 1880s, canals which had little ability to economically compete with rail transport, were off the map. In the next couple of decades, coal

11960-403: Was held on July 4, 1828, attended by U.S. president John Quincy Adams . The ceremony was held near Georgetown , at the canal's eventual 5.64 miles (9.08 km) mark near Lock 6, the upstream end of the Little Falls skirting canal, and Dam No. 1. At the groundbreaking, there was still argument over the eastern end of the canal. The directors thought that Little Falls (at the downstream end of

12075-424: Was increasingly diminished as the heating fuel of choice by oil, and growth of coal shipments leveled off. Later, after World War I when motor-trucks came into their own, the last small U.S. barge canals saw a steady decline in cargo ton-miles alongside many railways, the flexibility and steep slope climbing capability of lorries taking over cargo hauling increasingly as road networks were improved, and which also had

12190-481: Was issued for each section. Locks, culverts, dams, etc. were listed on the contracts by section number, not by mileage as is done today. For instance, Locks 5 and 6 are on Section No. 1, all the way to Guard Lock No. 8 on section 367. Sections A–H were in the Georgetown level below lock 5 In November 1830, the canal opened from Little Falls to Seneca. The Georgetown section opened the following year. In 1828,

12305-623: Was later abandoned and converted to the Capital Crescent Trail in the 1990s.) By far the most demanding task was building a canal with locks to bypass the Great Falls of the Potomac River . Roaring over the rocks, the river drops nearly 80 feet in less than a mile. Swift currents, solid rock, and constant financial and labor problems hindered progress on the Patowmack Canal at Great Falls. Construction begun in 1785 and took seventeen years to complete - six years longer than

12420-544: Was made up of two short skirting canals with a "short sheet of water about a quarter mile" between them. Note: There is a good deal of confusion, even in the Potomac Company Records, to the canals around Harpers Ferry, more than one being called the "Shenandoah Canal" (sometimes inaccurately). This Maryland canal, also called the Long Canal , had no locks, and overcame a drop of three feet. This canal

12535-712: Was never built. The canal is now maintained as the Chesapeake and Ohio Canal National Historical Park , with a trail that follows the old towpath. After the American Revolutionary War , George Washington was the chief advocate of using waterways to connect the Eastern Seaboard to the Great Lakes and the Ohio River , which flows into the Mississippi River and ultimately to the Gulf of Mexico at New Orleans . In 1785, Washington founded

12650-426: Was once used to describe linear features seen on the surface of Mars , Martian canals , an optical illusion. A navigation is a series of channels that run roughly parallel to the valley and stream bed of an unimproved river. A navigation always shares the drainage basin of the river. A vessel uses the calm parts of the river itself as well as improvements, traversing the same changes in height. A true canal

12765-458: Was part of the Patowmack Canal, was dredged to increase its depth from 4 to 6 feet (1.2 to 1.8 m), and became part of the C&O Canal. The first president of the canal, Charles F. Mercer , insisted on perfection since this was a work of national importance. This would cost the company more money to build the canal. During his term, he forbade the use of slackwaters for navigation, the use of composite locks (see section below), or reduction of

12880-925: Was renovating a second overlook to the Great Falls due for completion in late May 2005. The Great Falls section of the canal, along with the archaeological remains of Matildaville and other nearby canal-related sites, were designated a National Historic Landmark in 1982, as one of the nation's earliest efforts at large-scale civil engineering, reflective of the visions of two of its Founding Fathers, George Washington and James Madison. 38°59′22″N 77°14′55″W  /  38.98944°N 77.24861°W  / 38.98944; -77.24861 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 flow under atmospheric pressure , and can be thought of as artificial rivers . In most cases,

12995-554: Was reused for the C&O Canal, between Dam No. 3 and Lock 34 (Goodheart's Lock), according to a 1922 survey, for a distance of almost a mile. Some other tributaries to the Potomac had work done on them, such as Conococheague Creek , the Monocacy River , Patterson Creek , South Branch, Cacpon Creek, Opequon Creek, and the Shenandoah River . Matildaville, at its height, boasted the company superintendent's house,

13110-620: Was the only part to be completed. On October 23, 1826, the engineers submitted the study, presenting the proposed canal route in three sections. The eastern section comprised Georgetown to Cumberland; the middle section, Cumberland (going up Wills Creek to Hyndman then across the Sand Patch Grade crossing the Eastern Continental Divide to Garrett ) to the confluence of the Casselman River and

13225-641: Was worked on in 1785. This refers to the falls which start just below Seneca Creek, Maryland (this is not to be confused with Seneca Falls, New York where the Cayuga–Seneca Canal was built). It is opposite Dam No. 2 / Violettes Lock on the C&O Canal. This canal, just below Harpers Ferry, was 1,760 yards long, dropped 15 feet, and had no locks either. This was also called the Bullring Canal by some boatmen (the falls also being called "Bullring Falls" according to Thomas Moore's 1820 writings), and

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