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Conchas Dam, a corps of engineers flood prevention project also used for supplying water for irrigation to the Arch Hurley Conservancy District

Conchas Dam, a corps of engineers flood prevention project also used f...

Illustration shows the downstream face and spillway of the newly completed Conchas Dam in New Mexico. Illus. in: Water in New Mexico : a history of its management and use / Ira G. Clark. Albuquerque : Universi... More

Chinese water conservancy experts examining contour maps at the University of Maryland, where they are taking courses at the UNRRA (United Nations Relief and Rehabilitation Administration) training center. From left: Lin Ping-yi, Liu Chung-juci, Chang Jen, Hsu Shih-ta, Wu Yui-sin, Tsai Pang-lin, Chang Han-ying, and Tsai Chen

Chinese water conservancy experts examining contour maps at the Univer...

Public domain photograph - historical image of Maryland, United States, free to use, no copyright restrictions image - Picryl description

In one sense, this is a photograph of a lovely row of houses in Galveston, Texas. But look closely in the figure in the foreground. In 2008, ferocious Hurricane Ike and its surge of high salt water killed an estimated 40,000 trees. But Galveston Island Tree Conservancy member Donna Leibbert found chain saw sculptors to create art from the dead trees in the historic district. This is one of them

In one sense, this is a photograph of a lovely row of houses in Galves...

Picryl description: Public domain image of a residential building, house, 19th-20th century architecture, free to use, no copyright restrictions.

Chinese water conservancy experts examining contour maps at the University of Maryland, where they are taking courses at the UNRRA (United Nations Relief and Rehabilitation Administration) training center

Chinese water conservancy experts examining contour maps at the Univer...

Picryl description: Public domain photograph of an office worker, 1930s, free to use, no copyright restrictions.