Lefferts Tide Mill, Huntington Harbor, Southdown Road, Huntington, Suf...
Significance: The Lefferts Mill is a fine example of a tide mill, a relatively rare engineering structure. It is also important as an example of a typical Long Island water-powered grist mill in its equipment,... More
Lefferts Tide Mill, Huntington Harbor, Southdown Road, Huntington, Suf...
Significance: The Lefferts Mill is a fine example of a tide mill, a relatively rare engineering structure. It is also important as an example of a typical Long Island water-powered grist mill in its equipment,... More
Pawtucket Canal, Swamp Locks, Pawtucket & Merrimack Canals, Lowell, Mi...
Significance: The Swamp Locks complex consists of a flight of two navigation locks with a dam at the west end of the upper lock. The original locks opened in 1797, and were rebuilt in 1822-1823 when this confi... More
Lefferts Tide Mill, Huntington Harbor, Southdown Road, Huntington, Suf...
Significance: The Lefferts Mill is a fine example of a tide mill, a relatively rare engineering structure. It is also important as an example of a typical Long Island water-powered grist mill in its equipment,... More
Pawtucket Canal, Lower Locks, Lowell, Middlesex County, MA
Significance: The Lower Locks are comprised of two navigation locks and a dam, with a head of 17 feet. They were some of the earliest locks in the Lowell Canal System, originally constructed in the first phase... More
Pawtucket Canal, Swamp Locks, Pawtucket & Merrimack Canals, Lowell, Mi...
Significance: The Swamp Locks complex consists of a flight of two navigation locks with a dam at the west end of the upper lock. The original locks opened in 1797, and were rebuilt in 1822-1823 when this confi... More
Eastern Canal, Bridge & Armory Streets vicinity, Lowell, Middlesex Cou...
Significance: The opening of the Eastern Canal in 1835 marked the end of the second phase of construction of the Lowell Canal System as it had been planned in 1821. The Eastern Canal connected the Pawtucket an... More
Western Canal, Guard Gates, Western & Northern Canals, Lowell, Middles...
Significance: The Guard Gates were built as part of the improvements to the canal system which took place around the middle of the 19th century. The Guard Gates allowed parts of the Western Canal to be drained... More
Lefferts Tide Mill, Huntington Harbor, Southdown Road, Huntington, Suf...
Significance: The Lefferts Mill is a fine example of a tide mill, a relatively rare engineering structure. It is also important as an example of a typical Long Island water-powered grist mill in its equipment,... More
Pawtucket Canal, Lower Locks, Lowell, Middlesex County, MA
Significance: The Lower Locks are comprised of two navigation locks and a dam, with a head of 17 feet. They were some of the earliest locks in the Lowell Canal System, originally constructed in the first phase... More
Pawtucket Canal, Swamp Locks, Pawtucket & Merrimack Canals, Lowell, Mi...
Significance: The Swamp Locks complex consists of a flight of two navigation locks with a dam at the west end of the upper lock. The original locks opened in 1797, and were rebuilt in 1822-1823 when this confi... More
Pawtucket Canal, Swamp Locks, Pawtucket & Merrimack Canals, Lowell, Mi...
Significance: The Swamp Locks complex consists of a flight of two navigation locks with a dam at the west end of the upper lock. The original locks opened in 1797, and were rebuilt in 1822-1823 when this confi... More
Eastern Canal, Bridge & Armory Streets vicinity, Lowell, Middlesex Cou...
Significance: The opening of the Eastern Canal in 1835 marked the end of the second phase of construction of the Lowell Canal System as it had been planned in 1821. The Eastern Canal connected the Pawtucket an... More
Western Canal, Guard Gates, Western & Northern Canals, Lowell, Middles...
Significance: The Guard Gates were built as part of the improvements to the canal system which took place around the middle of the 19th century. The Guard Gates allowed parts of the Western Canal to be drained... More
Merrimack Canal, Lowell, Middlesex County, MA
Significance: The Merrimack Canal was the first of the series of power canals constructed at Lowell. At the end of it, the Merrimack Mills produced textiles using the process developed by Francis Cabot Lowell ... More
Lefferts Tide Mill, Huntington Harbor, Southdown Road, Huntington, Suf...
Significance: The Lefferts Mill is a fine example of a tide mill, a relatively rare engineering structure. It is also important as an example of a typical Long Island water-powered grist mill in its equipment,... More
Pawtucket Canal, Lower Locks, Lowell, Middlesex County, MA
Significance: The Lower Locks are comprised of two navigation locks and a dam, with a head of 17 feet. They were some of the earliest locks in the Lowell Canal System, originally constructed in the first phase... More
Merrimack Canal, Merrimack Dam, Lowell, Middlesex County, MA
Significance: The Merrimack and Rolling Dams were built as part of the third phase of building of the Lowell Canal System, to provide intermediate levels between the Merrimack Canal, on the upper level, and the... More
Pawtucket Canal, Swamp Locks, Pawtucket & Merrimack Canals, Lowell, Mi...
Significance: The Swamp Locks complex consists of a flight of two navigation locks with a dam at the west end of the upper lock. The original locks opened in 1797, and were rebuilt in 1822-1823 when this confi... More
Lefferts Tide Mill, Huntington Harbor, Southdown Road, Huntington, Suf...
Significance: The Lefferts Mill is a fine example of a tide mill, a relatively rare engineering structure. It is also important as an example of a typical Long Island water-powered grist mill in its equipment,... More
Lefferts Tide Mill, Huntington Harbor, Southdown Road, Huntington, Suf...
Significance: The Lefferts Mill is a fine example of a tide mill, a relatively rare engineering structure. It is also important as an example of a typical Long Island water-powered grist mill in its equipment,... More
Lefferts Tide Mill, Huntington Harbor, Southdown Road, Huntington, Suf...
Significance: The Lefferts Mill is a fine example of a tide mill, a relatively rare engineering structure. It is also important as an example of a typical Long Island water-powered grist mill in its equipment,... More
Pawtucket Canal, Lower Locks, Lowell, Middlesex County, MA
Significance: The Lower Locks are comprised of two navigation locks and a dam, with a head of 17 feet. They were some of the earliest locks in the Lowell Canal System, originally constructed in the first phase... More
Pawtucket Canal, Lower Locks, Lowell, Middlesex County, MA
Significance: The Lower Locks are comprised of two navigation locks and a dam, with a head of 17 feet. They were some of the earliest locks in the Lowell Canal System, originally constructed in the first phase... More
Lefferts Tide Mill, Huntington Harbor, Southdown Road, Huntington, Suf...
Significance: The Lefferts Mill is a fine example of a tide mill, a relatively rare engineering structure. It is also important as an example of a typical Long Island water-powered grist mill in its equipment,... More
Lefferts Tide Mill, Huntington Harbor, Southdown Road, Huntington, Suf...
Significance: The Lefferts Mill is a fine example of a tide mill, a relatively rare engineering structure. It is also important as an example of a typical Long Island water-powered grist mill in its equipment,... More
Lefferts Tide Mill, Huntington Harbor, Southdown Road, Huntington, Suf...
Significance: The Lefferts Mill is a fine example of a tide mill, a relatively rare engineering structure. It is also important as an example of a typical Long Island water-powered grist mill in its equipment,... More
Lefferts Tide Mill, Huntington Harbor, Southdown Road, Huntington, Suf...
Significance: The Lefferts Mill is a fine example of a tide mill, a relatively rare engineering structure. It is also important as an example of a typical Long Island water-powered grist mill in its equipment,... More
Pawtucket Canal, Swamp Locks, Pawtucket & Merrimack Canals, Lowell, Mi...
Significance: The Swamp Locks complex consists of a flight of two navigation locks with a dam at the west end of the upper lock. The original locks opened in 1797, and were rebuilt in 1822-1823 when this confi... More
Pawtucket Canal, Swamp Locks, Pawtucket & Merrimack Canals, Lowell, Mi...
Significance: The Swamp Locks complex consists of a flight of two navigation locks with a dam at the west end of the upper lock. The original locks opened in 1797, and were rebuilt in 1822-1823 when this confi... More
Pawtucket Canal, Swamp Locks, Pawtucket & Merrimack Canals, Lowell, Mi...
Significance: The Swamp Locks complex consists of a flight of two navigation locks with a dam at the west end of the upper lock. The original locks opened in 1797, and were rebuilt in 1822-1823 when this confi... More
Western Canal, Guard Gates, Western & Northern Canals, Lowell, Middles...
Significance: The Guard Gates were built as part of the improvements to the canal system which took place around the middle of the 19th century. The Guard Gates allowed parts of the Western Canal to be drained... More
Lefferts Tide Mill, Huntington Harbor, Southdown Road, Huntington, Suf...
Significance: The Lefferts Mill is a fine example of a tide mill, a relatively rare engineering structure. It is also important as an example of a typical Long Island water-powered grist mill in its equipment,... More
Pawtucket Canal, Lower Locks, Lowell, Middlesex County, MA
Significance: The Lower Locks are comprised of two navigation locks and a dam, with a head of 17 feet. They were some of the earliest locks in the Lowell Canal System, originally constructed in the first phase... More
Pawtucket Canal, Lower Locks, Lowell, Middlesex County, MA
Significance: The Lower Locks are comprised of two navigation locks and a dam, with a head of 17 feet. They were some of the earliest locks in the Lowell Canal System, originally constructed in the first phase... More
Pawtucket Canal, Swamp Locks, Pawtucket & Merrimack Canals, Lowell, Mi...
Significance: The Swamp Locks complex consists of a flight of two navigation locks with a dam at the west end of the upper lock. The original locks opened in 1797, and were rebuilt in 1822-1823 when this confi... More
Pawtucket Canal, Swamp Locks, Pawtucket & Merrimack Canals, Lowell, Mi...
Significance: The Swamp Locks complex consists of a flight of two navigation locks with a dam at the west end of the upper lock. The original locks opened in 1797, and were rebuilt in 1822-1823 when this confi... More
Lefferts Tide Mill, Huntington Harbor, Southdown Road, Huntington, Suf...
Significance: The Lefferts Mill is a fine example of a tide mill, a relatively rare engineering structure. It is also important as an example of a typical Long Island water-powered grist mill in its equipment,... More
Pawtucket Canal, Lower Locks, Lowell, Middlesex County, MA
Significance: The Lower Locks are comprised of two navigation locks and a dam, with a head of 17 feet. They were some of the earliest locks in the Lowell Canal System, originally constructed in the first phase... More
Pawtucket Canal, Lower Locks, Lowell, Middlesex County, MA
Significance: The Lower Locks are comprised of two navigation locks and a dam, with a head of 17 feet. They were some of the earliest locks in the Lowell Canal System, originally constructed in the first phase... More
Pawtucket Canal, Swamp Locks, Pawtucket & Merrimack Canals, Lowell, Mi...
Significance: The Swamp Locks complex consists of a flight of two navigation locks with a dam at the west end of the upper lock. The original locks opened in 1797, and were rebuilt in 1822-1823 when this confi... More
Pawtucket Canal, Swamp Locks, Pawtucket & Merrimack Canals, Lowell, Mi...
Significance: The Swamp Locks complex consists of a flight of two navigation locks with a dam at the west end of the upper lock. The original locks opened in 1797, and were rebuilt in 1822-1823 when this confi... More
Pawtucket Canal, Swamp Locks, Pawtucket & Merrimack Canals, Lowell, Mi...
Significance: The Swamp Locks complex consists of a flight of two navigation locks with a dam at the west end of the upper lock. The original locks opened in 1797, and were rebuilt in 1822-1823 when this confi... More
Eastern Canal, Bridge & Armory Streets vicinity, Lowell, Middlesex Cou...
Significance: The opening of the Eastern Canal in 1835 marked the end of the second phase of construction of the Lowell Canal System as it had been planned in 1821. The Eastern Canal connected the Pawtucket an... More
Lefferts Tide Mill, Huntington Harbor, Southdown Road, Huntington, Suf...
Significance: The Lefferts Mill is a fine example of a tide mill, a relatively rare engineering structure. It is also important as an example of a typical Long Island water-powered grist mill in its equipment,... More
Pawtucket Canal, Lower Locks, Lowell, Middlesex County, MA
Significance: The Lower Locks are comprised of two navigation locks and a dam, with a head of 17 feet. They were some of the earliest locks in the Lowell Canal System, originally constructed in the first phase... More
Pawtucket Canal, Swamp Locks, Pawtucket & Merrimack Canals, Lowell, Mi...
Significance: The Swamp Locks complex consists of a flight of two navigation locks with a dam at the west end of the upper lock. The original locks opened in 1797, and were rebuilt in 1822-1823 when this confi... More
Pawtucket Canal, Swamp Locks, Pawtucket & Merrimack Canals, Lowell, Mi...
Significance: The Swamp Locks complex consists of a flight of two navigation locks with a dam at the west end of the upper lock. The original locks opened in 1797, and were rebuilt in 1822-1823 when this confi... More
Pawtucket Canal, Swamp Locks, Pawtucket & Merrimack Canals, Lowell, Mi...
Significance: The Swamp Locks complex consists of a flight of two navigation locks with a dam at the west end of the upper lock. The original locks opened in 1797, and were rebuilt in 1822-1823 when this confi... More
Pawtucket Canal, Swamp Locks, Pawtucket & Merrimack Canals, Lowell, Mi...
Significance: The Swamp Locks complex consists of a flight of two navigation locks with a dam at the west end of the upper lock. The original locks opened in 1797, and were rebuilt in 1822-1823 when this confi... More
Pawtucket Canal, Swamp Locks, Pawtucket & Merrimack Canals, Lowell, Mi...
Significance: The Swamp Locks complex consists of a flight of two navigation locks with a dam at the west end of the upper lock. The original locks opened in 1797, and were rebuilt in 1822-1823 when this confi... More
Eastern Canal, Boott Dam, Lowell, Middlesex County, MA
Significance: The dam now in existence was built in the latter part of the 19th century to replace an older dam on the same site. The original dam had been constructed at the same time as the Eastern Canal, in... More
Merrimack Canal, Lowell, Middlesex County, MA
Significance: The Merrimack Canal was the first of the series of power canals constructed at Lowell. At the end of it, the Merrimack Mills produced textiles using the process developed by Francis Cabot Lowell ... More
Merrimack Canal, Lowell, Middlesex County, MA
Significance: The Merrimack Canal was the first of the series of power canals constructed at Lowell. At the end of it, the Merrimack Mills produced textiles using the process developed by Francis Cabot Lowell ... More
Pawtucket Canal, Lower Locks, Lowell, Middlesex County, MA
Significance: The Lower Locks are comprised of two navigation locks and a dam, with a head of 17 feet. They were some of the earliest locks in the Lowell Canal System, originally constructed in the first phase... More
Pawtucket Canal, Lower Locks, Lowell, Middlesex County, MA
Significance: The Lower Locks are comprised of two navigation locks and a dam, with a head of 17 feet. They were some of the earliest locks in the Lowell Canal System, originally constructed in the first phase... More
Merrimack Canal, Merrimack Dam, Lowell, Middlesex County, MA
Significance: The Merrimack and Rolling Dams were built as part of the third phase of building of the Lowell Canal System, to provide intermediate levels between the Merrimack Canal, on the upper level, and the... More
Merrimack Canal, Merrimack Dam, Lowell, Middlesex County, MA
Significance: The Merrimack and Rolling Dams were built as part of the third phase of building of the Lowell Canal System, to provide intermediate levels between the Merrimack Canal, on the upper level, and the... More
Eastern Canal, Bridge & Armory Streets vicinity, Lowell, Middlesex Cou...
Significance: The opening of the Eastern Canal in 1835 marked the end of the second phase of construction of the Lowell Canal System as it had been planned in 1821. The Eastern Canal connected the Pawtucket an... More
Moody Street Feeder, Moody Street vicinity, Lowell, Middlesex County, ...
Significance: The Moody Street Feeder consists of three brick-vaulted tunnels which increased the amount of water in the Merrimack and Eastern Canals by transporting water directly from the Western Canal, just ... More
Moody Street Feeder, Moody Street vicinity, Lowell, Middlesex County, ...
Significance: The Moody Street Feeder consists of three brick-vaulted tunnels which increased the amount of water in the Merrimack and Eastern Canals by transporting water directly from the Western Canal, just ... More
Merrimack Canal, Lowell, Middlesex County, MA
Significance: The Merrimack Canal was the first of the series of power canals constructed at Lowell. At the end of it, the Merrimack Mills produced textiles using the process developed by Francis Cabot Lowell ... More
Merrimack Canal, Lowell, Middlesex County, MA
Significance: The Merrimack Canal was the first of the series of power canals constructed at Lowell. At the end of it, the Merrimack Mills produced textiles using the process developed by Francis Cabot Lowell ... More
Lefferts Tide Mill, Huntington Harbor, Southdown Road, Huntington, Suf...
Significance: The Lefferts Mill is a fine example of a tide mill, a relatively rare engineering structure. It is also important as an example of a typical Long Island water-powered grist mill in its equipment,... More
Lefferts Tide Mill, Huntington Harbor, Southdown Road, Huntington, Suf...
Significance: The Lefferts Mill is a fine example of a tide mill, a relatively rare engineering structure. It is also important as an example of a typical Long Island water-powered grist mill in its equipment,... More
Lefferts Tide Mill, Huntington Harbor, Southdown Road, Huntington, Suf...
Significance: The Lefferts Mill is a fine example of a tide mill, a relatively rare engineering structure. It is also important as an example of a typical Long Island water-powered grist mill in its equipment,... More
Pawtucket Canal, Lower Locks, Lowell, Middlesex County, MA
Significance: The Lower Locks are comprised of two navigation locks and a dam, with a head of 17 feet. They were some of the earliest locks in the Lowell Canal System, originally constructed in the first phase... More
Pawtucket Canal, Lower Locks, Lowell, Middlesex County, MA
Significance: The Lower Locks are comprised of two navigation locks and a dam, with a head of 17 feet. They were some of the earliest locks in the Lowell Canal System, originally constructed in the first phase... More
Pawtucket Canal, Lower Locks, Lowell, Middlesex County, MA
Significance: The Lower Locks are comprised of two navigation locks and a dam, with a head of 17 feet. They were some of the earliest locks in the Lowell Canal System, originally constructed in the first phase... More
Eastern Canal, Boott Dam, Lowell, Middlesex County, MA
Significance: The dam now in existence was built in the latter part of the 19th century to replace an older dam on the same site. The original dam had been constructed at the same time as the Eastern Canal, in... More
Western Canal, Guard Gates, Western & Northern Canals, Lowell, Middles...
Significance: The Guard Gates were built as part of the improvements to the canal system which took place around the middle of the 19th century. The Guard Gates allowed parts of the Western Canal to be drained... More
Lefferts Tide Mill, Huntington Harbor, Southdown Road, Huntington, Suf...
Significance: The Lefferts Mill is a fine example of a tide mill, a relatively rare engineering structure. It is also important as an example of a typical Long Island water-powered grist mill in its equipment,... More
Lefferts Tide Mill, Huntington Harbor, Southdown Road, Huntington, Suf...
Significance: The Lefferts Mill is a fine example of a tide mill, a relatively rare engineering structure. It is also important as an example of a typical Long Island water-powered grist mill in its equipment,... More
Lefferts Tide Mill, Huntington Harbor, Southdown Road, Huntington, Suf...
Significance: The Lefferts Mill is a fine example of a tide mill, a relatively rare engineering structure. It is also important as an example of a typical Long Island water-powered grist mill in its equipment,... More
Lefferts Tide Mill, Huntington Harbor, Southdown Road, Huntington, Suf...
Significance: The Lefferts Mill is a fine example of a tide mill, a relatively rare engineering structure. It is also important as an example of a typical Long Island water-powered grist mill in its equipment,... More
Lefferts Tide Mill, Huntington Harbor, Southdown Road, Huntington, Suf...
Significance: The Lefferts Mill is a fine example of a tide mill, a relatively rare engineering structure. It is also important as an example of a typical Long Island water-powered grist mill in its equipment,... More
Lefferts Tide Mill, Huntington Harbor, Southdown Road, Huntington, Suf...
Significance: The Lefferts Mill is a fine example of a tide mill, a relatively rare engineering structure. It is also important as an example of a typical Long Island water-powered grist mill in its equipment,... More
Pawtucket Canal, Lower Locks, Lowell, Middlesex County, MA
Significance: The Lower Locks are comprised of two navigation locks and a dam, with a head of 17 feet. They were some of the earliest locks in the Lowell Canal System, originally constructed in the first phase... More
Pawtucket Canal, Lower Locks, Lowell, Middlesex County, MA
Significance: The Lower Locks are comprised of two navigation locks and a dam, with a head of 17 feet. They were some of the earliest locks in the Lowell Canal System, originally constructed in the first phase... More
Pawtucket Canal, Swamp Locks, Pawtucket & Merrimack Canals, Lowell, Mi...
Significance: The Swamp Locks complex consists of a flight of two navigation locks with a dam at the west end of the upper lock. The original locks opened in 1797, and were rebuilt in 1822-1823 when this confi... More
Hamilton Canal, Guard Gates, Lowell, Middlesex County, MA
Significance: The Guard Gates on the Hamilton Canal allow it to be drained independently of the rest of the canal system. Survey number: HAER MA-4-A Building/structure dates: 1847 Initial Construction Buildi... More
Pawtucket Canal, Swamp Locks, Pawtucket & Merrimack Canals, Lowell, Mi...
Significance: The Swamp Locks complex consists of a flight of two navigation locks with a dam at the west end of the upper lock. The original locks opened in 1797, and were rebuilt in 1822-1823 when this confi... More
Pawtucket Canal, Swamp Locks, Pawtucket & Merrimack Canals, Lowell, Mi...
Significance: The Swamp Locks complex consists of a flight of two navigation locks with a dam at the west end of the upper lock. The original locks opened in 1797, and were rebuilt in 1822-1823 when this confi... More
Lefferts Tide Mill, Huntington Harbor, Southdown Road, Huntington, Suf...
Significance: The Lefferts Mill is a fine example of a tide mill, a relatively rare engineering structure. It is also important as an example of a typical Long Island water-powered grist mill in its equipment,... More
Hamilton Canal, Guard Gates, Lowell, Middlesex County, MA
Significance: The Guard Gates on the Hamilton Canal allow it to be drained independently of the rest of the canal system. Survey number: HAER MA-4-A Building/structure dates: 1847 Initial Construction Buildi... More
Lefferts Tide Mill, Huntington Harbor, Southdown Road, Huntington, Suf...
Significance: The Lefferts Mill is a fine example of a tide mill, a relatively rare engineering structure. It is also important as an example of a typical Long Island water-powered grist mill in its equipment,... More
Pawtucket Canal, Lower Locks, Lowell, Middlesex County, MA
Significance: The Lower Locks are comprised of two navigation locks and a dam, with a head of 17 feet. They were some of the earliest locks in the Lowell Canal System, originally constructed in the first phase... More
Hamilton Canal, Guard Gates, Lowell, Middlesex County, MA
Significance: The Guard Gates on the Hamilton Canal allow it to be drained independently of the rest of the canal system. Survey number: HAER MA-4-A Building/structure dates: 1847 Initial Construction Buildi... More
Pawtucket Canal, Lower Locks, Lowell, Middlesex County, MA
Significance: The Lower Locks are comprised of two navigation locks and a dam, with a head of 17 feet. They were some of the earliest locks in the Lowell Canal System, originally constructed in the first phase... More
Pawtucket Canal, Swamp Locks, Pawtucket & Merrimack Canals, Lowell, Mi...
Significance: The Swamp Locks complex consists of a flight of two navigation locks with a dam at the west end of the upper lock. The original locks opened in 1797, and were rebuilt in 1822-1823 when this confi... More
Hamilton Canal, Guard Gates, Lowell, Middlesex County, MA
Significance: The Guard Gates on the Hamilton Canal allow it to be drained independently of the rest of the canal system. Survey number: HAER MA-4-A Building/structure dates: 1847 Initial Construction Buildi... More
Hamilton Canal, Guard Gates, Lowell, Middlesex County, MA
Significance: The Guard Gates on the Hamilton Canal allow it to be drained independently of the rest of the canal system. Survey number: HAER MA-4-A Building/structure dates: 1847 Initial Construction Buildi... More
Pawtucket Canal, Lower Locks, Lowell, Middlesex County, MA
Significance: The Lower Locks are comprised of two navigation locks and a dam, with a head of 17 feet. They were some of the earliest locks in the Lowell Canal System, originally constructed in the first phase... More
Eastern Canal, Boott Dam, Lowell, Middlesex County, MA
Significance: The dam now in existence was built in the latter part of the 19th century to replace an older dam on the same site. The original dam had been constructed at the same time as the Eastern Canal, in... More
Merrimack Canal, Merrimack Dam, Lowell, Middlesex County, MA
Significance: The Merrimack and Rolling Dams were built as part of the third phase of building of the Lowell Canal System, to provide intermediate levels between the Merrimack Canal, on the upper level, and the... More
Pawtucket Canal, Swamp Locks, Pawtucket & Merrimack Canals, Lowell, Mi...
Significance: The Swamp Locks complex consists of a flight of two navigation locks with a dam at the west end of the upper lock. The original locks opened in 1797, and were rebuilt in 1822-1823 when this confi... More
Eastern Canal, Bridge & Armory Streets vicinity, Lowell, Middlesex Cou...
Significance: The opening of the Eastern Canal in 1835 marked the end of the second phase of construction of the Lowell Canal System as it had been planned in 1821. The Eastern Canal connected the Pawtucket an... More
Pawtucket Canal, Swamp Locks, Pawtucket & Merrimack Canals, Lowell, Mi...
Significance: The Swamp Locks complex consists of a flight of two navigation locks with a dam at the west end of the upper lock. The original locks opened in 1797, and were rebuilt in 1822-1823 when this confi... More
Hamilton Canal, Guard Gates, Lowell, Middlesex County, MA
Significance: The Guard Gates on the Hamilton Canal allow it to be drained independently of the rest of the canal system. Survey number: HAER MA-4-A Building/structure dates: 1847 Initial Construction Buildi... More
Lefferts Tide Mill, Huntington Harbor, Southdown Road, Huntington, Suf...
Significance: The Lefferts Mill is a fine example of a tide mill, a relatively rare engineering structure. It is also important as an example of a typical Long Island water-powered grist mill in its equipment,... More