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The Pacific Railroad Surveys (1853–1855) were a series of explorations of the American West designed to find and document possible routes for a transcontinental railroad across North America. The expeditions included surveyors, scientists, and artists and resulted in an immense body of data covering at least 400,000 square miles (1,000,000 km ...
The expedition lasted for nine months and traveled 1,800 miles (2,900 km). [1] The expedition was one of several surveys approved in 1853-4, when funding was added to the War Department budget. This allowed Secretary of War Jefferson Davis to send out surveying expeditions to explore potential transcontinental railroad routes across the United ...
Pacific Railroad Surveys, which consisted of five surveys to find potential transcontinental railroad routes. These survey reports were compiled into twelve volumes, Reports of Explorations and Surveys, to ascertain the most practicable and economical route for a railroad from the Mississippi River to the Pacific Ocean, made under the direction ...
In 1841, Cadwalader Ringgold, an officer in the United States Navy, spent twenty days surveying the San Francisco Bay watershed as a member of the United States Exploring Expedition In 1849, Cadwalader Ringgold began a more comprehensive survey the San Francisco Bay region, [11] the Sacramento River, and parts of the American and created several maps which included depth sounding information ...
Pruess Lake, Snake Valley, Utah George Karl Ludwig Preuss (1803–1854), anglicized as Charles Preuss, was a surveyor and cartographer who accompanied John C. Fremont on three of his five exploratory expeditions of the American west, including the expedition where he and Fremont were the first to record seeing Lake Tahoe from a mountaintop vantage point as they traversed what is now Carson ...
Whipple accomplished his assigned surveys in spite of these challenges and was promoted to first lieutenant on April 24, 1851. [1] By 1853 his survey work was complete and his reports had been written. [3] In 1853 Congress authorized the Pacific Railroad Surveys to select the best route for a transcontinental railroad. Whipple was directed to ...
In 2019, the program had captured 10 million miles of Street View imagery and 36 million square miles of Google Earth imagery, covering most of the planet. Meanwhile, as of 2020, around a billion ...
Google Earth is a web and computer program that renders a 3D representation of Earth based primarily on satellite imagery.The program maps the Earth by superimposing satellite images, aerial photography, and GIS data onto a 3D globe, allowing users to see cities and landscapes from various angles.