Besides the canals actually being worked in the United States, there are 1953 miles of canals that have been abandoned. The construction of these canals cost 8,802,630l. The longest of the abandoned canals is the Wabash and Erie, 379 miles in length, which was built between 1832 and 1851 for the purpose of connecting Evansville, Ind., with the Ohio State lines, at a cost of about 6½ million dollars. The James River and Kanawho is another important canal, 196½ miles long, which was constructed at different dates between 1785 and 1851, at a cost of close on 6¼ million dollars, and was abandoned in 1880, on account of its inability to “pay its way.” The canal now belongs to the Richmond and Allegheny Railway Company. The Erie canal and branches between Bridgwater and Erie was built between 1833 and 1844 at a cost of about 6½ million dollars, and abandoned in 1871, and the Western Division of the Pennsylvania Canal, between Johnstown and Pittsburg, a distance of 104 miles, commenced in 1830, and constructed at a cost of about 3¼ million dollars, was abandoned in 1863. In almost every instance the reason assigned for abandonment has been the same—that the traffic has been insufficient to meet the working expenses of the canal.[119]

The Miami and Erie Canal.—This is the most important of the existing canals in Ohio, both with regard to navigation and to use for water-power. From Cincinnati it extends northerly, at a distance ranging from 15 to 35 miles from the western boundary of the State, into Defiance County, where it turns north-easterly and follows down the Maumee river to Toledo. The main trunk has a length of about 246 miles. It originally entered the Ohio river at Cincinnati, and the Maumee river close to its mouth, several miles below Toledo; but these termini have within recent years been cut off. The section traversed by the canal is fertile, thickly settled, wealthy, enjoys abundant railroad facilities, and has an established character as a manufacturing district. The structures on the Miami and Erie Canal appear to be in better condition than those on the Ohio Canal, and the hydraulic powers are favoured by a generally copious supply of water, derived from the Miami and Maumee rivers and from a system of large reservoirs in the summit-region between their basins. The water-powers along the whole line of the canal are generally taken up and in use. This is especially true between Dayton and Cincinnati, and it has been stated that probably no more power would be leased along that portion, from danger of interfering with the interests of navigation. The manufacture of flour is an important interest along the entire canal, and stands first as regards the number of mills. The paper industry ranks next in this respect, and has been most developed between Dayton and Cincinnati. There are small woollen-mills also at various points, as well as saw-mills, machine shops, agricultural implement factories, oil-mills, and other works. The greatest utilisation of power is found among the three counties of Hamilton, Butler, and Montgomery, and in the middle and northern counties of Miami, Anglaize, and Lucas.

At Maumee city, some 8 miles above Toledo, the canal is 63 feet above the level of the Maumee river and Lake Erie, and is connected with the former by locks. From this point for 15½ miles, up to the head of the rapids, where the Maumee is rendered tributary for feeding the levels below, there is no lockage. When the canal was built the question of water-power in connection with it was considered, and in the Sixth Annual Report of the Board of Public Works (1843) it was stated that “the capacity of this canal is such that from the head of the rapids to Manhattan 18,000 cubic feet of water per minute can be passed and used for hydraulic purposes without injury to the navigation. At Maumee city the water can be used over a fall of 63 feet; at the locks above Toledo the water can be used over a fall of 49 feet, and at Manhattan over a fall of 15 feet; between these points the canal is so located that the water can be used from it for hydraulic purposes with great convenience, occupying all the fall between the canal and river.” A large amount of power is now used from this portion of the canal by several paper-mills and large flour mills.

From the pool above the rapids the succeeding 26 miles of canal, to Independence, is supplied from the river by means of a dam at that place, 9 feet high. From the long level below Independence, the report already quoted from mentions an opportunity to utilise a fall of 23 feet to the river. The portion of canal now referred to was originally known as the Wabash and Erie, being continuous with the Indiana canal of that name. From its junction with the old Miami Canal in Paulding County, to the outlet at Toledo, on the level of Lake Erie, a distance of 64 miles, there is a total descent of 148 feet, effected through 19 locks. This section of the canal was constructed 60 feet wide at the top water-line, and 6 feet deep. From Paulding County the canal takes a quite direct southerly course, and thence to Dayton, 113 miles below the junction, is utilised at frequent intervals for power by flouring-mills, and occasionally by small woollen factories, saw-mills, and other works.

A quantity of water is withdrawn from the Canal by the Cooper Hydraulic Company and utilised under a fall of 12 feet around a lock, being then returned to the canal. At a point below a certain amount is again withdrawn from the canal, and after it has been employed for power under a fall of 8 feet, is discharged into the Miami river. The Hydraulic Company owns a part of the water, acquired by purchase, and also leases from the State, at an annual rental of 1000 dollars, all the surplus running to supply the levels below Dayton. On this privilege a “run” is defined as 315 cubic feet of water per minute on the “middle,” as it is called or 12 foot fall, and 400 cubic feet per minute on the “lower,” or 8 foot fall. A run at the middle fall was originally 300 cubic feet, but in consequence of slight backwater, it was increased to 315 cubic feet The rates for both temporary and permanent power vary from 150 dollars to 300 dollars per annum per run, but the larger portion is leased at 200 dollars per annum in the middle, and 150 dollars on the lower fall.

From the basin at Dayton to low water in the Ohio river at Cincinnati, a distance of 66 miles, the canal descends about 300 feet, through 32 locks. Water for feeding the various levels south of Dayton is introduced at that city, Mamesburg, and Middletown. The manufacturing along this section is extensive, the paper and flouring industries being especially prominent. For the former of these, as now developed, however, the power furnished from the canal alone is not sufficiently reliable, and the mills are generally filled with steam engines for use when the water supply runs short.

From the upper plane of the city of Cincinnati the canal descended formerly to the Ohio by means of ten locks, with a fall of 111 feet, measured to low water in the river. This terminal portion, though abandoned for navigation, is nevertheless utilised for power. Much of the way, it is covered from view, and in part of its course the water is divided between two separate channels. Water is used successively from one level to another, and is finally discharged into the Eggleston Avenue sewer.

The Morris Canal, New Jersey, of which a profile is given at [p. 206], is one of the most important in the United States. It was built originally to connect the Delaware River, with Newall. It was commenced in 1825 and opened to Jersey City in 1836. The summit level is 51 miles from tide water at Newall, and 39 miles from the Delaware River, being 914 feet above the former, and 760 feet above the latter. This elevation is overcome by 23 inclined planes, and 23 lift-locks. In 1841 the dimensions of the lift-locks were enlarged to 98 feet by 12 feet.

The Union Canal, Pa., of which a section is shown on the next page, was commenced in 1811, and completed, after a long stoppage caused by the war of 1812, in 1832. The canal was intended to connect the Schuylkill and Susquehanna rivers. There is a lockage of 501 feet, with 88 lift-locks 3 guard-locks, and 2 weigh-locks, making 93 locks in all. The tonnage, which was 207,500 tons in 1858, fell to 29,800 tons in 1880. There were in the latter year 73 boats on the canal, averaging 100 tons.

The Schuylkill Navigation ([see profile, p. 206]) Pa., was incorporated in 1815, for the purpose of connecting the coal region of Mount Carbon with the city of Philadelphia. The canal was completed in 1826, when the depth of water was three feet, and the carrying capacity of the boats employed was 25 tons. By 1847 the minimum depth of water was made 6 feet, and the boats employed averaged 170 tons. In 1850, a flood, which devastated the Schuylkill valley, swept away dams, locks, tow-paths, and banks, so that hardly a trace of the canal existed for many miles, but this damage was subsequently repaired. The locks on the canal are 110 feet by 18 feet. The lockage on the main line of the canal is 618½ feet. There are 47 waterways, two overflows, with 3300 feet in both, 121 bridges, 22 culverts, 31 dams, and 12 aqueducts. The company has had a chequered career, and the canal was, in 1870, leased to the Pa. and Reading Railroad Co., for 999 years, at a yearly rental of 655,000 dollars.