What is Dam ?

Contra Dam also produces power through its 105 MW power station with 3x35 MW Francis turbines that generates an average of 234 GWh per year.

The history of the United States Society on Dams (USSD) was suggested by Keith Ferguson, then-President of USSD, for the Annual Meeting and Conference scheduled for April 13-17, 2015, in Louisville, Kentucky.

Roman dam construction was characterized by "the Romans' ability to plan and organize engineering construction on a grand scale". Roman planners introduced the then novel concept of large reservoir dams which could secure a permanent water supply for urban settlements also over the dry season.

The history of USSD and its predecessor organizations is not well documented and the author decided to focus on the “early history” of USSD’s predecessor organizations

Their pioneering use of water-proof hydraulic mortar and particularly Roman concrete allowed for much larger dam structures than previously built, such as the Lake Homs Dam, possibly the largest water barrier to that date, and the Harbaqa Dam, both in Roman Syria.

Lago di Vogorno is a reservoir that was created and now impounded by the dam when it was constructed between 1961-1965. This reservoir has a maximum capacity of 105,000,000 cubic meters of water and a surface area of 400 acres.

Their pioneering use of water-proof hydraulic mortar and particularly Roman concrete allowed for much larger dam structures than previously built, such as the Lake Homs Dam, possibly the largest water barrier to that date, and the Harbaqa Dam, both in Roman Syria.

The highest Roman dam was the Subiaco Dam near Rome; its record height of 50 m (160 ft) remained unsurpassed until its accidental destruction in 1305.

: the United States Committee on Large Dams (USCOLD), the United States Committee of the International Commission on Large Dams (ICOLD), the American National Committee, and the United States Delegation to ICOLD.

The highest Roman dam was the Subiaco Dam near Rome; its record height of 50 m (160 ft) remained unsurpassed until its accidental destruction in 1305.

Gordon Dam (Australia)
Located in southwest Tasmania in Australia, Gordon Dam is a double curvature concrete arch dam. One of the dam's amazing feature is that it's curved both in the vertical and horizontal directions to resist large hydraulic pressures coming from the 12,359,040 megaliters of water in Lake Gordon, the largest lake in Australia.

Roman engineers made routine use of ancient standard designs like embankment dams and masonry gravity dams. Apart from that, they displayed a high degree of inventiveness, introducing most of the other basic dam designs which had been unknown until then.

Due to the lack of definitive information on the early organizations, this early history takes the approach of identifying the participants from the United States who contributed to the early ICOLD congresses and the nature of their positions within ICOLD, adding organizational information where possible, and the titles of their reports/papers that were included in the ICOLD Congress Transactions.

The immense volume of water is diverted 183 m to the underground power station, where three hydro turbines can generate up to 432 MW of power. Approximately 13% of Tasmania's electricity demand is provided by the Gordon Power Station.

These include arch-gravity dams, arch dams, buttress dams and multiple arch buttress dams, all of which were known and employed by the 2nd century AD (see List of Roman dams). Roman workforces also were the first to build dam bridges, such as the Bridge of Valerian in Iran.

This early history focuses on the first six ICOLD Congresses (1933, 1936, 1948, 1951, 1955, and 1958), the information contained in their Transactions, and the U.S. dams constructed before and during those periods.

Roman engineers made routine use of ancient standard designs like embankment dams and masonry gravity dams

Out of the 48 arch dams that have been built in Australia, Gordon Dam is one of the only nine that is designed to be a double curving dam

Eflatun Pınar is a Hittite dam and spring temple near Konya, Turkey. It is thought to be from the time of the Hittite empire between the 15th and 13th century BC.

The earliest publications that provide some background information on the early history of USSD’s predecessor organizations are the published ICOLD Congress Transactions of the First Congress (five volumes) held in 1933 in Stockholm, Sweden

Monticello Dam (USA)
This 93 m concrete arch dam in California, USA is one of the coolest dams in the world because of its mesmerizing spillway called the Glory Hole. The spillway is an uncontrolled morning glory type with a tip diameter of 22 m and sits within the perimeters of Lake Berryessa, the seventh largest man-made lake in California.

The Kallanai is constructed of unhewn stone, over 300 m (980 ft) long, 4.5 m (15 ft) high and 20 m (66 ft) wide, across the main stream of the Kaveri river in Tamil Nadu, South India.

It can drain 48,400 cubic feet per second of water during the lake's peak level that occurs when the lake rises to 4.7 m above the spillway's lip. The exit end of the spillway is also famous as a full pipe for skateboarders.

The World Energy Council was established in 1923 and its World Power Conferences were conducted every three years, starting in 1924. The first World Power Conference that same year was held in London, England, and was attended by 1,700 delegates from 40 countrie

The basic structure dates to the 2nd century AD and is considered one of the oldest water-diversion or water-regulator structures in the world, which is still in use. The purpose of the dam was to divert the waters of the Kaveri across the fertile Delta region for irrigation via canals.