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Hydrographic survey is the science of measurement and description of features which affect maritime navigation, marine construction, dredging, offshore wind farms, offshore oil exploration and drilling and related activities. Surveys may also be conducted to determine the route of subsea cables such as telecommunications cables, cables ...
The United States Lake Survey (USLS) was a hydrographic survey for the Great Lakes, New York Barge Canal, Lake Champlain and the Boundary Waters of the Canada–United States border between Minnesota and Ontario. The Survey's activities began on 31 March 1841, with the goal of surveying the Great Lakes.
It was merged with the United States Army Corps of Engineers on 31 March 1863, at which point the Corps of Engineers also assumed the Lakes Survey for the Great Lakes. [2] In the mid-19th century, Corps of Engineers' officers ran Lighthouse Districts in tandem with U.S. Naval officers. In 1841, Congress created the Lake Survey.
The Hydrographic Survey Division, which conducts hydrographic surveys, acquires data, and maintains Atlantic and Pacific hydrographic branches The Navigation Services Division , which produces the United States Coast Pilot and handles customer affairs and responses to navigation issues.
Two of these systems are the Scanning Hydrographic Operational Airborne Lidar Survey (SHOALS) and the Laser Airborne Depth Sounder (LADS). SHOALS was first developed to help the United States Army Corps of Engineers (USACE) in bathymetric surveying by a company called Optech in the 1990s.
An 1889 report described the function of the office as mainly being reconnaissance of foreign coasts, office duties and publication of compiled maps. The United States Coast and Geodetic Survey, a component of the United States Department of the Treasury was responsible for the systematic hydrographic survey of the coasts of the United States. [11]
To avoid the dangerous situation Coast Survey personnel had faced during the American Civil War, when they could have been executed as spies if captured by the enemy, a new Coast and Geodetic Survey Corps was created on May 22, 1917, as one of the uniformed services of the United States, giving the Survey ' s officers a commissioned status that ...
Table of geography, hydrography, and navigation, from a 1728 Cyclopaedia.. Hydrography is the branch of applied sciences which deals with the measurement and description of the physical features of oceans, seas, coastal areas, lakes and rivers, as well as with the prediction of their change over time, for the primary purpose of safety of navigation and in support of all other marine activities ...