Greensboro is a city in the U.S. state of North Carolina. It is the 3rd-most populous city in North Carolina, the 68th-most populous city in the United States, and the county seat and largest city in Guilford County and the surrounding Piedmont Triad metropolitan region. As of the 2010 census, the city population was 269,666, and in 2015 the estimated population was 285,342. Three major interstate highways in the Piedmont region of central North Carolina were built to intersect at this city. In
In 1904, the present plant was built. Construction was preceded by replacing Triphammer Dam slightly west of it original location in 1896. Water is supplied to the plant from Beebe Lake by a five-foot diameter underground penstock, 1700 feet long. The existing intake dates to 1953 and was upgraded in 1981.n 1904, the present plant was built. Construction was preceded by replacing Triphammer Dam slightly west of it original location in 1896. Water is supplied to the plant from Beebe Lake by a five-foot diameter underground penstock, 1700 feet long. The existing intake dates to 1953 and was upgraded in 1981.
The difference in height between the source and the turbine is called the head. The amount of potential energy which can be harnessed from the water is proportional to the head. To obtain very high head, water for a hydraulic turbine may be routed through a large pipe called a penstock.