NAVIGABLE - The Law Mind Legal Dictionary

NAVIGABLEAuthored

The Law Mind • 1165 words

Definition

In law, "navigable" describes a body of water over which a government claims regulatory authority, public rights attach, or private ownership is limited — and the specific test used to establish navigability depends entirely on the legal purpose for which the question is being asked.

Three distinct legal tests have operated under this single word:

1. Tidal test (English common law): A water is navigable if it is subject to the ebb and flow of the tide. Under this rule, tidewater is navigable; freshwater rivers, however commercially important, are not. This test governed early American courts before being substantially displaced.

2. Commerce test (federal navigability): A water is navigable in law if it is used, susceptible of being used, or was historically used as a highway for interstate or foreign commerce — in its natural or reasonably improved condition. This is the primary federal test, originating in the Supreme Court's interpretation of congressional commerce power, and governs federal regulatory jurisdiction under statutes such as the Clean Water Act and Rivers and Harbors Act.

3. Title test (navigability for title): A separate federal test determines which riverbeds passed to states upon statehood. Under this doctrine, states acquired title to the beds of waters that were navigable in fact at the time of statehood. The commerce test and the title test are related but not identical — a water may satisfy one without satisfying the other.

State law may apply its own navigability standard for purposes of public access rights, riparian ownership, and the public trust doctrine. Some states extend navigability to any water floatable by recreational craft, going well beyond both the tidal and commerce tests.

Common Language

Modern common usage (Wiktionary): Capable of being navigated; deep enough and wide enough to afford passage to vessels. Also: seaworthy; steerable.

Historical common usage (Webster's 1913): "Capable of being navigated; deep enough and wide enough to afford passage to vessels; as, a navigable river."

The common meaning is factual and physical — can a vessel pass through? The legal meaning is a term of art that varies by jurisdiction and purpose. A river that is physically passable by canoe may or may not be "navigable" under federal law, state law, or the common law tidal test. Conversely, a historically navigable river that has been dammed or altered may still be legally navigable for title purposes. Researchers should never assume the ordinary-language meaning resolves a legal navigability question.

Common Confusion

The single word "navigable" conceals at least three functionally distinct legal standards. Federal regulatory navigability (for Clean Water Act jurisdiction), federal title navigability (for riverbed ownership), and state navigability (for public access and riparian rights) can yield different results on the same body of water. Historical sources — including early editions of Black's — often treat the tidal test as the baseline definition without clearly signaling that American courts had already departed from it by the time those editions were published. A researcher who stops at the dictionary definition risks applying the wrong test entirely.

Why It Matters in Research

Navigability is a threshold concept in multiple distinct bodies of law, and the applicable test shifts depending on the legal question being asked. Researchers working across property law, environmental regulation, admiralty, and federal jurisdiction will encounter the word in sources where different tests are silently assumed.

In historical sources, the tidal definition dominated early American treatises and court opinions that tracked English common law. The displacement of that test by a commerce-based standard happened gradually through nineteenth-century federal decisions. Legal dictionaries from the 1880s through early 1900s often note the divergence but do not cleanly resolve it, leaving researchers to triangulate from context.

For environmental law research, navigability is the gateway to federal regulatory authority. The scope of "navigable waters" under the Clean Water Act has been one of the most contested questions in environmental law, and the regulatory definition has contracted and expanded through agency rulemaking and Supreme Court decisions across several decades. Encyclopedia entries on Waters of the United States are essential reading before working with primary sources in this area.

For property and public trust research, state law controls in significant respects, and state courts have defined navigability in ways that range from strict (tidal or commerce standard) to expansive (any water capable of recreational use). This variation is not always flagged in national-scope treatises.

In admiralty, the term connects to questions of vessel seaworthiness and whether particular waters fall within admiralty jurisdiction, introducing yet another doctrinal layer.

Historical Dictionary Support

Black's Law Dictionary (1st and 2nd editions) and Burrill's Law Dictionary each lead with the physical definition — capable of being navigated — before noting the "more restricted" tidal meaning. Both acknowledge the American departure from the English tidal standard, and Black's quotes language explicitly stating that ebb and flow of tide "do not constitute the usual test" in the United States. This is a notable instance of a historical dictionary flagging doctrinal divergence rather than papering over it.

Burrill provides the most systematic treatment, separately defining "navigable river or stream" as one where the tide ebbs and flows, while acknowledging the broader commerce-based usage. Anderson's Dictionary of Law, as provided, does not offer a substantive entry on navigable — the source material supplied appears to be a fragment from an unrelated entry.

All three functional dictionaries agree that the tidal definition is the common law baseline but that American courts modified it. What they do not fully capture is the later twentieth-century development of navigability as a regulatory concept under federal environmental statutes — a doctrinal elaboration that postdates these editions entirely.

Jurisdictional Note

Federal navigability for regulatory purposes is governed by federal law and has been interpreted through Supreme Court decisions and agency rulemaking, with the scope of "navigable waters" remaining actively litigated. State navigability standards for public trust and riparian rights vary significantly; some western and Great Lakes states apply tests considerably broader than the federal commerce standard. Researchers working on a specific body of water must identify which sovereign's law governs the specific legal question at issue.

Encyclopedia Cross-Reference

Navigable Waters, Waters of the United States, and Jurisdiction — The Law Mind Environmental & Energy Law Encyclopedia
Coastal and Navigable Waters — Public Trust Doctrine — The Law Mind Property Law Encyclopedia
Collision — Navigation Rules (COLREGS), Fault, and Divided Damages — The Law Mind Military, Veterans & Admiralty Law Encyclopedia

NAVIGABLEmain

Black's Law Dictionary • 1891

Capable of being navi- gated; that may be navigated or passed over in ships or vessels. But the term is gen- erally understood in a more restricted sense, viz., subject to the ebb and flow of the tide. "The doctrine of the common law as to the nav- igability of waters has no application in this coun- try. Here the ebb and flow of the tide do not con- stitute the usual test, as in England, or any test at all, of the navigability of waters. There no waters are navigable in fact, or at least to any considera- ble extent, which are not subject to the tide, and from this circumstance tide-water and navigable water there signify substantially the same thing. But in this country the case is widely different. Some of our rivers are as navigable for many hundreds of miles above as they are below the lim- its of tide-water, and some of them are navigable for great distances by large vessels, which are not even affected by the tide at any point during their entire length. A different test must therefore be applied to determine the navigability of our riv- ers, and that is found in their navigable capacity. Those rivers must be regarded as public navigable rivers, in law, which are navigable in fact. And they are navigable in fact when they are used, or are susceptible of being used, in their ordinary condition, as highways for commerce, over which trade and travel are or may be conducted in the customary modes of trade and travel on water. And they constitute navigable waters of the United States, within the meaning of the acts of congress, in contradistinction from the navigable waters of the states, when they form, in their or- 3 Kent, Comm. 412, 414, 417, 418; 2 Hil. Real Prop. 90, 91.

NAVIGABLEmain

Black's Law Dictionary (2nd Ed.) • 1910

Capable of being navigated; that may be navigated or passed over in ships or vessels. But the term is generally understood in a more restricted sense, viz., subject to the ebb and flow of the tide. “The doctrine of the common law as to the navn bite on waters has no application in this country. ere the ebb and flow of the tide do not constitute the usual test, as in England, or any test at all, of the navigability of waters. There no waters are navigable in fact, or at least to any considerable extent, which are not subject to the tide, and from this circumstance tide-water and navigable water there signify substantially the same thing. But in this country the case is widely different. Some of our rivers are as navigable for many hundreds of miles above as they are below the limits of tide-water, and some of them are navigable for great distances by large vessels, which are not even affected by the tide at any point during their entire length. A different test must therefore be applied to determine the navigability of our rivers, and that is found in their navigable capacity. Those rivers must be regarded as public navigable rivers, in law, which are navigable in fact. And they are navigable in fact when they are used, or are susceptible of being used, in their ordinary condition, as highways for commerce, over which trade and travel are or may be conducted in the customary modes of trade and travel on water. And they constitute navigable waters of the United States, within the meaning of the acts of congress, in contradistinction from the navigable waters of the states, when they form, in their ordinary condition, by themselves. or by uniting with other waters, a continued highway over which commerce is or may be carried on with other states or foreign countries in the customary modes in which such commerce is conducted by water.” The Daniel Ball, 10 Wall. 568. 19 L. Ed. 999. And see Packer y. Bird. 137 U. S. 661, 11 Sup. Ct. 210, 34 T.. Ed. 819: The Genesee Chief, 12 How. 455, 13 T.. Ed. 1058; Illinois Cent. R. Co. v. State. 146 U. S. 387 13 Sup. Ct. 110, 36 L. Ed. 1018. It is true that the flow and ebb of the tide Is not regarded. in this country, as the usval, or any real, test of navigability; and it only operates to impress, prima facie, the character of being public and navigable, and to place the onua of proof on the party affirming the contrary. Rut the navigability of tide-waters does not materially depend upon past or present actual public use. Such use may establish navigability, but it is not essential to give the character. Otherwise, streams in new and unsettled sections of the country, or where the increase, growth, and development have not been sufficient to call them into public use, would be exIn the civil law. The.

NAVIGABLEmain

Anderson's Dictionary of Law • 1890

CHAPTER. See STATUTE, 2. such declaration, may be admitted to become citizens thereof, notwithstanding they were alien enemies at the time and in the manner prescribed by the laws heretofore passed on that subject. "1 "Sec. 2172. The children of persons who have been duly naturalized under any law of the United States, or who, previous to the passing of any law on that subject, by the government of the United States, may have become citizens of any one of the States, under the laws thereof, being under the age of twenty-one years at the time of the naturalization of their parents, shall, if dwelling in the United States, be considered as citizens thereof; and the children of persons who now are, or have been, citizens of the United States, shall, though born out of the limits and jurisdiction of the United States, be considered as citizens thereof."? "Sec. 2174. Every seaman, being a foreigner, who declares his intention of becoming a citizen of the United States in any competent court, and shall have served three years on board of a merchant-vessel of the United States subsequent to the date of such declaration, may, on his application to any competent court, and the production of his certificate of discharge and good conduct during that time, together with the certificate of his declaration of intention to become a citizen, be admitted a citizen of the United States; and every seaman, being a foreigner, shall, after his declaration of intention to become a citizen of the United States, and after he shall have served such three years, be deemed a citizen of the United States for the purpose of manning and serving en board any merchant-vessel of the United States, anything to the contrary in any act of Congress notwithstanding; but such seaman shall, for all purposes of protection as an American citizen, be deemed such, after the filing of his declaration of intention to become such citizen." 3 See ALIEN, 1; CHINESE; CITIZEN; INDIAN. Refers to waters which afford a channel for commerce or intercourse. Opposed, non-navigable, unnavigable. Capable of being used for purposes of navigation, of trade and travel, in the ordinary modes, without reference to the extent or manner of use; sufficiently wide, deep, and free from obstructions to be useful for purposes of trade and transportation.2 "Navigable waters" has three distinct meanings: 1, as synonymous with "tidewaters," being waters, salt or fresh, wherever the ebb and flow of the tide from the sea is felt; 2, as limited to tide-waters capable of being navigated for some useful purpose; 3, as including all waters, whether within or beyond the ebb and flow of the tide, which can be used for navigation. 3 A river, navigable in its general character, does not change its legal characteristics by a disturbance which, at a point, breaks the continuity of actual navigation. Congress has power "to regulate commerce," and "commerce" includes navigation. But the power does not extend to such small creeks and coves as are not navigable for any general purpose useful to commercial business. See further COMMERCE. The admiralty and maritime jurisdiction granted to the Federal government by the Constitution extends to all navigable lakes and rivers, where commerce is carried on between States or with a foreign nation. See LAKES. With us the ebb and flow of the tide is no test, as at common law and in England. There, no waters are navigable to any considerable extent which are not subject to the tide; from which circumstance tidewater and navigable water there signify substantially the same thing. Some of our rivers are navigable hundreds of miles above tide-limits. The test with us is navigable capacity. Those are public navigable rivers in law which are navigable in fact; when they are susceptible of being used, in their ordinary condition, as highways for commerce, over which trade and travel are or may be conducted in the customary modes of trade and travel on water. And they constitute navigable waters of the United States within the meaning of the acts of Congress, in contradistinc1 L. navigabilis: navis, a ship; -igare, to drive. 2 Sullivan v. Spotswood, 82 Ala. 166-68 (1886), cases. Reservation at Niagara, 16 Abb. N. Cas. 159 (1884). • Commonwealth v. Vincent, 108 Mass. 447 (1871), Gray, J. Groton v. Hurlburt, 22 Conn. 183-86 (1852); Gibbons v. Ogden, 9 Wheat. 186 (1824). • The Genesee Chief, 12 How. 443 (1851); The Hine v. Trevor, 4 Wall. 561 (1866).

NAVIGABLEa.

Websters Unabridged Dictionary (1913) • 1913

Capable of being navigated; deep enough and wide enough to afford passage to vessels; as, a navigable river.

navigableadj

Wiktionary (English) • 2026

Wiktionary contributors • CC BY-SA 4.0 • via Kaikki
Extracted and formatted for display by Law Mind. Source link opens the current Wiktionary page and its contributor history; it is not a frozen copy of this extract.

Capable of being navigated; deep enough and wide enough to afford passage to vessels. | Seaworthy; in a navigable state; steerable. | Steerable, dirigible. | Easy to navigate.

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