The examples and perspective in this article may not represent a worldwide view of the subject.(July 2015) |
A lock keeper, lock tender, or lock operator looks after a canal or river lock, operating it and if necessary maintaining it or organizing its maintenance. Traditionally, lock keepers lived on-site, often in small purpose-built cottages. A lock keeper may also be the operator for the lock's Weir and, in many cases lock keepers play an important role in moderating and controlling water levels in response to drought and heavy rain. With the decline in commercial traffic the occupation is dying out on inland waterways, at least in Britain. Many previously staffed locks are now unstaffed.
The Lehigh Coal & Navigation Company in 1900 paid their lock keepers US$18 per month, with a rent free house. They often had small stores to sell groceries to passing boats and, among their duties, made minor repairs along the canal and at locks. [1]
On the Chesapeake and Ohio Canal the lock keeper had a rent free house, an acre of land for a garden, and was paid a base of $150 a year. If he kept more than one lock, it was $50 for each extra lock, with a maximum of 3 locks. [2]
Lockkeepers were on call 24 hours a day during the boating season. [2]
On the Chesapeake and Ohio Canal, the lock keepers were required to remove the windlasses from all lock paddles at night, to prevent unauthorized use. [3] But they had to get up and man the lock if a boat came through at night.
Lock keepers had to enforce company rules against independent and wily boat captains. In some cases, they had to check waybills that the boats had. They also were responsible for the level (canal pound) by their lock, to fix leaks and other minor repairs.
Some lock keepers simply left the job and disappeared. In June 1848, when Asa Aud had taken French leave, William Elgin the district superintendent, appointed John Boozell as tender of Lock 25 on the Chesapeake and Ohio Canal. [4]
Often lock keepers sold alcohol on the side, one notable example being A. S. Adams of Lock 33 (Harpers Ferry) on the Chesapeake and Ohio Canal. [4] where the Salty Dog Tavern was known for its availability of liquor and easiness of women.
To help a boat get out of a lock (going downstream) the lockkeeper would sometimes provide a swell, that is, opening the paddle valves (wickets) on the upstream gates so that the rush of water would flush the boat out. Some wily lock keepers would demand money from the boatmen for this "service". [5] If a boat ran aground between locks, they would sometimes ask a passing boat (going upstream) to tell the next lock keeper to give an extra heavy swell, by opening all the wickets on the upstream lock thus raising the water level temporarily, so that they could get unstuck. [6] [7]
The Morris Canal had inclined planes as well as locks, and the former required keepers also, although one cannot exactly call them "lock keepers" since they did not tend a lock, but an inclined plane which did much of the same function as a lock, lifting or lowering boats from one level to another, albeit with a cradle which carried the boats.
There were often conflicts between the boat captains and the lock keepers. In July 1874 on the Chesapeake and Ohio Canal, there was a notorious incident, where the boat's tow line caught and tore the lock railing and the captain of the boat insisted on scrubbing the boat's sides with a broom while still in the lock. The lock keeper demanded that the captain remove the boat from the lock, which he refused. The lock keeper's son opened one of the gates pinning the captain's son against the boat. There was soon a fist fight, and the captain's wife knocked one of the keeper's sons off the boat. Things escalated to rock throwing, clubbing, and the lock keeper's sons returned with a shotgun and revolver, which misfired. When the boat did resume its journey, the lock keeper followed on horseback, all the way to Cumberland (the end of the canal) with a club threatening to settle things. [8]
There were plenty of incidents with negligent lock keepers. On September 11, 1895 at Lock 22, the boat Excelsior arrived, and tried to lock through. The lock keeper was so drunk, he opened the lower gate paddles too early. The boat hit the mitre sill, broke in half, and sank with its 113 tons of coal. Richard A. Moore, the owner of the boat, collected over $1,300 in damages, and the lock keeper was fired. [9]
In England, there has been recent controversy over the Environment Agency's attempt to remove resident lock keepers on the River Thames. This has been met with widespread disapproval. [10]
Many people who began as lock keepers were later promoted in the company. Many district superintendents of the Chesapeake and Ohio Canal began as lock keepers, but because of their good reputation, were promoted. These included Elgin and John Y. Young in the 1830s and 1840s, John Lambie in the 1840s. A. K. Stake began at locks 41–41 from 1847 to 1848, Lewis G. Stanhop at locks 41–42 also in 1848, and Overton G. Lowe at Lock 56 when the canal opened to Cumberland — these three individuals were later promoted and continued working for the Canal company well into the 1870s. [11]
Locks on commercial canals are usually power operated. The lock keeper, who no longer lives on site, controls the whole process from a control room overlooking the lock. In the modern age the control of traffic and locks on canals is being centralised. A single control centre can remotely operate several locks and moveable bridges in a wide area, overseeing the process using CCTV. For example, the Tilburg control centre in the Netherlands will remotely control 18 locks and 28 moveable bridges from 2015 on. [12] This allows for a reduction in manpower while still providing round-the-clock service to water traffic. As the controller now has overview over the traffic moving through one lock after another, he can anticipate the arrival of boats by turning the lock in advance, having boats wait for another coming from behind to handle them simultaneously, or decide whether to turn a lock empty for a boat going in one direction or to wait for one going in the other direction.
On the River Thames, the traditional locks have been retained, though the majority are now motorised, using a hydraulic system to operate the gates; however, when unpowered, the gates and sluices can still be operated by use of the pedestal cranks at either end of the lock chamber.
A lock is a device used for raising and lowering boats, ships and other watercraft between stretches of water of different levels on river and canal waterways. The distinguishing feature of a lock is a fixed chamber in which the water level can be varied; whereas in a caisson lock, a boat lift, or on a canal inclined plane, it is the chamber itself that rises and falls.
The Chesapeake and Ohio Canal, abbreviated as the C&O Canal and occasionally called the Grand Old Ditch, operated from 1831 until 1924 along the Potomac River between Washington, D.C., and Cumberland, Maryland. It replaced the Potomac Canal, which shut down completely in 1828, and could operate during months in which the water level was too low for the former canal. The canal's principal cargo was coal from the Allegheny Mountains.
The English River Thames is navigable from Cricklade or Lechlade to the sea, and this part of the river falls 71 meters (234 feet). There are 45 locks on the river, each with one or more adjacent weirs. These lock and weir combinations are used for controlling the flow of water down the river, most notably when there is a risk of flooding, and provide for navigation above the tideway.
Bingley Five-Rise Locks is a staircase lock on the Leeds and Liverpool Canal at Bingley. As the name implies, a boat passing through the lock is lifted or lowered in five stages.
A canal pound, reach, or level, is the stretch of level water impounded between two canal locks. Canal pounds can vary in length from the non-existent, where two or more immediately adjacent locks form a lock staircase, to many kilometres/miles.
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 the George Washington Memorial Parkway.
The McAlpine Locks and Dam are a set of locks and a hydroelectric dam at the Falls of the Ohio River at Louisville, Kentucky. They are located at mile point 606.8, and control a 72.9 miles (117.3 km) long navigation pool. The locks and their associated canal were the first major engineering project on the Ohio River, completed in 1830 as the Louisville and Portland Canal, designed to allow shipping traffic to navigate through the Falls of the Ohio.
The Tidewater Lock is a dam in Washington, D.C. to the west of the mouth of Rock Creek at the Potomac River, on the east side of Georgetown. Built to connect the Chesapeake and Ohio Canal, opened in 1831, with the Potomac, it was a busy maritime intersection during several decades of the canal's heyday. C&O documents refer to it variously as Lock 0 and Tide Lock A.
The Locks on the Chesapeake and Ohio Canal, located in Maryland, West Virginia, and Washington, D.C. of the United States, were of three types: lift locks; river locks; and guard, or inlet, locks.
A flash lock is a type of lock for river or canal transport.
The River Wey Navigation and Godalming Navigation together provide a 20-mile (32 km) continuous navigable route from the River Thames near Weybridge via Guildford to Godalming. Both waterways are in Surrey and are owned by the National Trust. The River Wey Navigation connects to the Basingstoke Canal at West Byfleet, and the Godalming Navigation to the Wey and Arun Canal near Shalford. The Navigations consist of both man-made canal cuts and adapted parts of the River Wey.
The Landsford Canal is a navigation channel that opened in 1823 with the purpose of bypassing rapids along the Catawba River to allow efficient freight transport and rapid travel between nearby communities and settlements along the rural frontiers of the era. It had five locks operating over a stretch of two miles (3.2 km) with an elevation change overall of 32–34 feet (9.8–10.4 m). It was part of the inland navigation system from the 'Up Country' to Charleston, built systematically from 1819, and the navigations are today the centerpiece of Canal State Park:
The Canal State Park consists of three sets of locks, a mill site, miller's house, and a lockkeeper's house—all in various forms of decay and ruins.
Four Locks is a former small community which is now part of the Chesapeake and Ohio Canal National Historical Park. It was once a thriving community of homes and businesses in Washington County, Maryland that supported the Chesapeake and Ohio Canal from the mid-19th century, until its closure in the 1920s. In its heyday, the small community consisted of two stores, two warehouses, a dry dock for boat repair, a school, and post office, plus about a dozen houses.
The Kaukauna Locks Historic District is a lock and dam system in Kaukauna, Wisconsin, United States, that carried boat traffic around a rapids of the Fox River starting in the 1850s as part of the Fox–Wisconsin Waterway. It was added to the National Register of Historic Places in 1993 for its significance in engineering and transport.
The Chesapeake and Ohio Canal (C&O) used 11 navigable aqueducts to carry the canal over rivers and streams that were too wide for a culvert to contain. Aqueducts, like locks and other masonry structures, were called "works of art" by the canal board of directors.
A waste weir on a navigable canal is a slatted gate on each canal level or pound, to remove excess water and to drain the canal for repairs or for the winter shutdown. This differs for a dam or reservoir, for which a waste weir is another name for a spillway, i.e. not having the boards to adjust the water height nor the paddles to drain all the water as on a canal, only to drain the excess.
The Pennyfield Lock and lockhouse are part of the 184.5-mile (296.9 km) Chesapeake and Ohio Canal that operated in the United States along the Potomac River from the 1830s through 1923. The lock, located at towpath mile-marker 19.7, is near River Road in Montgomery County, Maryland. The original lock house was built in 1830, and its lock was completed in 1831.
Swains Lock and lock house are part of the 184.5-mile (296.9 km) Chesapeake and Ohio Canal that operated in the United States along the Potomac River from the 1830s through 1923. It is located at towpath mile-marker 16.7 near Potomac, Maryland, and within the Travilah census-designated place in Montgomery County, Maryland. The lock and lock house were built in the early 1830s and began operating shortly thereafter.
Riley's Lock (Lock 24) and lock house are part of the 184.5-mile (296.9 km) Chesapeake and Ohio Canal that operated in the United States along the Potomac River from the 1830s through 1923. They are located at towpath mile-marker 22.7 adjacent to Seneca Creek, in Montgomery County, Maryland. The lock is sometimes identified as Seneca because of the Seneca Aqueduct that carried the canal over the creek to the lift lock. The name Riley comes from John C. Riley, who was lock keeper from 1892 until the canal closed permanently in 1924.
Violette's Lock is part of the 184.5-mile Chesapeake and Ohio Canal that operated in the United States along the Potomac River from the 1830s through 1923. It is located at towpath mile-marker 22.1, in Montgomery County, Maryland. The name Violette comes from Alfred L. "Ap" Violette and his wife Kate, who were lock keepers from the beginning of the 20th century through the permanent closure of the canal in 1924.
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