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1. Sufficiently deep or wide to provide passage for vessels: navigable waters; a navigable river.
2. Capable of being steered. Used of boats, ships, or aircraft.

nav′i·ga·bil′i·ty, nav′i·ga·ble·ness n.
nav′i·ga·bly adv.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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Noun1.navigability - the quality of being suitable for the passage of a ship or aircraft
quality - an essential and distinguishing attribute of something or someone; "the quality of mercy is not strained"--Shakespeare
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
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A succession of navigable waters forms a kind of chain round its borders, as if to bind it together; while the most noble rivers in the world, running at convenient distances, present them with highways for the easy communication of friendly aids, and the mutual transportation and exchange of their various commodities.
In all the parts of the world washed by navigable waters our relation to each other would be the same--and more intimate than there are words to express in the language.
Army Corps of Engineers has issued the required "Section 10 Permit" authorizing Buccaneer's use of a jack-up rig in the navigable waters of the Cook Inlet for the planned exploration activities.
That opinion differed from the concurring opinion of Justice Kennedy that provided non-navigable waters that could be subject to jurisdiction included those that had a significant nexus to navigable waters, which was followed in the Obama era rule.
all the navigable waters of the United States...." (27)
Class D water bodies can only be used as navigable waters.
The agencies' proposal is the second step in a two-step process to review and revise the definition of "waters of the United States," consistent with President Trump's February 2017 Executive Order entitled "Restoring the Rule of Law, Federalism and Economic Growth by Reviewing the 'Waters of the United States' Rule." The Executive Order states that it is in the national interest to ensure that the nation's navigable waters are kept free from pollution, while at the same time promoting economic growth, minimizing regulatory uncertainty, and showing due regard for the roles of Congress and the states under the Constitution.
Unlike a 2015 definition that drew sharp criticism from construction materials producers and their customers, the new proposal a) contains straightforward wording that results in significant cost savings; b) protects the nation's navigable waters; helps sustain economic growth; and, c) reduces barriers to business development.
'We have all the charts of all the navigable waters in the country, from Baro to Newman, to Lokoja.
Following a bench trial, the district court found that rainwater and groundwater were leaching arsenic from the coal ash in the landfill and settling ponds, polluting the groundwater, which carried the arsenic into navigable waters. And because the court determined that the landfill and settling ponds constituted "point sources" as defined by the Act, it found Dominion liable under the Act.