Holyoke Canal System

Holyoke Canal System

Infobox_nrhp | name =Holyoke Canal System
nrhp_type =


caption =Holyoke Canal System
location= Holyoke, Massachusetts
area =
built =1847
architect= Multiple
architecture= No Style Listed
added = December 03, 1980
governing_body = Private
refnum=80000473 cite web|url=http://www.nr.nps.gov/|title=National Register Information System|date=2007-01-23|work=National Register of Historic Places|publisher=National Park Service]
The Holyoke Canal System is a system of power canals in Holyoke, Massachusetts. Its major canals are called the First Level Canal, Second Level Canal, and Third Level Canal.

History

The earliest predecessor to Holyoke's canals dates to 1827, when the Hadley Falls Company was established to manufacture cotton cloth. Its water-powered looms were fed from a wing dam along the Connecticut River's Great Rapids.

Today's canals began in 1848, after river measurements indicated an available water power of 6,000 cubic feet per second, the equivalent of 30,000 horsepower, or enough to power 450 mills. That year the company was reconstituted, with a capital stock of $4,000,000, to create a new manufacturing center based on local river power. Over the next 10 years it would build the area's dam and canal system, lay out industrial, commercial, and residential areas on its convert|1100|acre|km2|0 of land, and construct and operate two cotton mills and a factory making textile machinery.

In 1848 the first timber crib dam, about convert|1000|ft|m|-2 in length, was constructed across the Connecticut River to divert water into the canals. It failed within hours [ [http://www.holyoke.org/history.htm Holyoke history page] ] , and was replaced by a second timber dam, which in turn was replaced in 1900 by a granite-faced dam about convert|150|ft|m|0 downstream from its predecessor. The early canals were dug by men with picks and shovels, together with horse-drawn teams. Canal construction continued on and off until 1892.

In 1859, after the company had failed and had passed into receivership, Alfred Smith purchased at auction its hydraulic system, consisting of the dam, its gate houses, and convert|2.5|mi|km|1 of power canals with a boat lock; some convert|1100|acre|km2|0 of land in Holyoke containing mills and other buildings; and the public water supply reservoir and gas plant, each with a distribution system. He formed the Holyoke Water Power Company and sold stock to investors. Over the next 30 years the company flourished, as a number of large mills were built in the area. Energy was transmitted from the waterwheels to mills via a distribution system of gears, shafts, pulleys, and belts. The canals first produced municipal electricity on October 14, 1884, from an electric generator connected to a water wheel-driven shafting in an industrial building. In 1888 this was replaced by a combination hydro and steam electric power plant on the First Level Canal.

Description

Today's canal system is convert|4.5|mi|km|1 in length on three levels. The canals are now used for electrical power generation as the water descends level by level to the river.

The First Level Canal contains 12 large gates regulating water coming into the system, each convert|15|ft|m|0 long by convert|9|ft|m|0 wide, and weighing more than four tons, and 2 smaller gates at convert|11|ft|m|0 by convert|4.5|ft|m|1, all powered by a water-wheel. At its origin the canal is convert|140|ft|m|0 wide with 22 feet of water depth. It extends eastward about a thousand feet and then sweeps south for more than one mile (1.6 km) to supply the upper tier of mills.

The Second Level Canal runs parallel to the First but about convert|400|ft|m|-1 east. It begins at its south end, and runs north for over over a mile. For its first convert|2000|ft|m|-2, it is convert|140|ft|m|0 wide, then gradually narrows to convert|100|ft|m|-1. Its average water depth is convert|15|ft|m|0.

The Third Level Canal begins at the south end of the Second Level, but some convert|12|ft|m|0 lower, and extends convert|3550|ft|m|0. It is about convert|100|ft|m|-1 wide and convert|10|ft|m|0 deep, with an average height above the river varying between 23 to convert|28|ft|m|0.

References

* [http://www.nu.com/aboutnu/hwpco.asp Northeastern Utility canal descriptions]
* [http://www.holyokemass.com/hwp_1876/tex2.html Holyoke, Massachusetts, Dam and Canals]
* [http://www.kleinschmidtusa.com/pubs/hadleyfalls_fishpassage.htm Hadley Falls fish passage]


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