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A dam is a barrier across flowing water that obstructs, directs or retards the flow, often creating a reservoir, lake or impoundment. In Australian English, the word "dam" refers to the reservoir rather than the structure. Most dams have a section called a spillway or weir over which or through which it is intended that water will flow either intermittently or continuously.
History
One of the first dams built was the Dujiangyan dam on the Minjiang River or Min River, a tributary of the Yangtze, in what is now the province of Sichuan. Construction began in 256 BCE. It was built by Li Bing governor of Shu and his son. Li Bing is considered one of the first practitioners of hydraulic engineering. It functions as both a flood control structure and an irrigation diversion structure. The Dujiangyan Irrigation System, modernized and expanded, remains in use today. It is a popular tourist attraction near Dujiangyan, a large town 60 km northwest of Chengdu. * Pages 23-25 Mark Kurlansky, Salt: A World History, Vintage Canada (2002), trade paperback, 484 pages, ISBN 0676975356
Types of dams
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Hydro :: Renewable
Hydro :: Renewable
About Dams - A range of topics from the International Rivers Networks including social, environmental and economic impacts, and dam performance and safety.
Meta Description: [ International Rivers Network is the leading organization working to halt the construction of destructive river development projects and to promote sound river management options worldwide. ]
Building The Ultimate Dam - Donald Jackson of the History Department, Lafayette College, describes his book on John S. Eastwood and the control of water in the American West. Excerpts and illustrations.
California Dam Safety - Reviews plans and specifications for the construction of new dams or for the enlargement, alteration, repair, or removal of existing dams. Includes technical references, statutes and regulations.
Meta Description: [ Rules, Regulations and Overview of issues regarding dam creation and maintenance ]
Climate Control Requires a Dam at the Strait of Gibraltar - Article discusses the climate benefits of building a dam across the straits of Gibralter. By R. G. Johnson, Department of Geology and Geophysics, University of Minnesota.
Dam Design - Features a range of information for undergraduate studies. Topics include loadings, geology, site investigations, and construction. Compiled by Andrew Graham at Durham University.
Dams - Illustrated project by Diana Biggs, on the social and environmental impacts of large dams. Includes case studies.
Dams and Development - Demonstrate how dams can be used by university teachers and students to explore topics in both environmental studies and development studies. Includes discussions, case studies of selected dam projects, and lists of references to assist teachers and students in further research.
Deltaworks - Includes the history of the 1953 flooding in The Netherlands and series of dams created to prevent this from happening again.
Meta Description: [ De Ramp in '53, de Deltawerken en Watermanagement in Nederland. The Great Flood of 1953, the Deltawork and Watermanagement in the Netherlands. ]
Elan Valley Dams - History of the dams, reservoirs, and 73 mile aqueduct of the Elan Valley waterworks in mid-Wales. From the Powys digital history project.
Geoguide Dams - Basic animated guide to the before, during, and after phases of dam construction.
German Dam Research and Technology: - Provides links to publications that show progress in German dam research and case histories where modern techniques had been used. Publications in pdf format.
Meta Description: [ This site provides links to publications that show progress in German dam research and case histories where modern techniques had been used. The site will be updated regularly. You are kindly invi ]
Gibraltar Dam - Historical overview of this dam built in 1920 and designed by Joseph Barlow Lippincott (1864-1942) in the Pacific Southwest, from the United States Department of Agriculture.
Meta Description: [ Information about land management and recreation on National Forests in California. ]
High Masonry Dams. - Full text of John McMaster's 1876 publication.
Holding Back the Waters — Dams as Water Resource Monuments - Article by Joe Gelt which details the range of dams and the regulations that control them.
Meta Description: [ The University of Arizona Water Resources Research Center is dedicated to providing water research, education, and policy for Arizona's future. ]
Introduction to Dams - Topics include the societal nature of dams and opposition to, examples of failures, and types.
Kalpasar Dam Development Feasibility Study - Gujarat State considers a proposed tidal power dam at the Gulf of Khambhat, India. Includes history, benefits and technical features.
Karun III - Project history, news, technical data and photographs. Arch dam located on the Karun river in Iran.
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National Dam Safety Program - NDSP - Addresses safety and security for dams through the coordination by the Federal Emergency Management Agency of federal programs and initiatives for dams and the transfer of federal best practices in dam security to the states.
National Performance of Dams Program - NPDP - Technical resource for information on the performance of dams, supporting dam safety, engineering, and public policy. Includes a database of dams in the U.S., and a database of primarily dam failures.
Parker Dam - Guide from Desert USA to the deepest dam in the world, built in the 1930s on the Colorado River. Includes history, photographs and visitor information.
Meta Description: [ Comprehensive guide to Parker Dam on the southern Colorado River, includes color photos, tour, Visitor Center facilities, rates & fees, seasons & hours. ]
Parker Dam and Powerplant - Comment and photographs from the Bureau of Reclamation.
Meta Description: [ Bureau of Reclamation, Lower Colorado Region. ]
Pensacola Dam - Provides a range of photographs and commentary on the history and construction of this 1938 dam located on the Grand river in Oklahoma.
Meta Description: [ The Grand Laker provides useful current and historical information about the Grand Lake, OK Area, including Lake Rules, Weather, Boating Terms Glossary, Business Directory, Fishing Report, Events Calendar, Community Info, Lake Level, grandlaker.com email user IDs, and more! ]
South Batavia Dam - Project to determine the future of the dam. Includes dam history, project scope and schedule, and feasability studies. Located on the Fox River in Kane County, Illinois.
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Tailings Dam Safety - Topics include current issues, saftey, dam properties and failures. From the WISE uranium project.
The Dam Site - A range of topics from Richard Woodward, including how dams are built and work, geology, and the environment.
The Los Angeles Dam Story - Illustrated article on the progress in designing critical structures to avoid damage during large earthquakes.
The World Commission on Dams - Archive of the commission whose objectives were to undertake a global review of the development effectiveness of large dams and to develop internationally acceptable criteria and guidelines for future decision-making on dams.
Meta Description: [ The World Commission on Dams is an independent and international commission, established in May 1998, which presented its findings on November 16 2000. Its objectives are to undertake a global review of the development effectiveness of large dams and to develop internationally acceptable criteria... ]
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