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The dam is located approximately 4 miles (6 km) northeast of Orofino and impounds the Dworshak Reservoir for flood control and hydroelectricity generation. With a height of 717 feet (219 m), Dworshak is the third tallest dam in the United States and the tallest straight-axis concrete dam in the Western Hemisphere.he reservoir is required to maintain a minimum of 700,000 acre feet (0.86 km 3) of winter flood-storage space, and dam releases are operated so that water levels reach a maximum of 1,570 feet (480 m) in July.
â âYou need at least 60 cm depth for frogs to hibernate successfully, and ideally 90 cm or more.â. â âA pond should ideally have a section at least 60cm deep to protect certain animals (like frogs) from weather extremes (particularly in winter).â. â âDepth profile is important.tâs commonly suggested that wildlife ponds should be at least 60 cm (about 2 feet) deep. The reason usually put forward will be something or other to do with protecting animals from cold weather (or sometimes warm). Here are some typical quotes you can find on the Internet, including some very recently published: