Navigable

a.

1.

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

Adj.

1.

navigable - able to be sailed on or through safely; "navigable waters"; "a navigable channel"

NAVIGABLE. Capable of being navigated.
     2. In law, the term navigable is applied to the sea, to arms of the sea, and to rivers in which the tide flows and reflows. 5 Taunt. R. 705; S. C. Eng. Com. Law Rep. 240; 5 Pick. R. 199; Ang. Tide Wat. 62; 1 Bouv. Inst. n. 428.
     3. In North Carolina; 1 M'Cord, R. 580; 2 Dev. R. 30; 3 Dev. R. 59; and in Pennsylvania; 2 Binn. R. 75; 14 S. & R. 71; the navigability of a river does not depend upon the ebb and flow of the tide, but a stream navigable by sea vessels is a navigable river.
     4. By the common law, such rivers as are navigable in the popular sense of the word, whether the tide ebb and flow in them or not, are public highways. Ang. Tide Wat. 62; Ang. Wat. Courses, 205 1 Pick. 180; 5 Pick. 199; 1 Halst. 1; 4 Call, 441: 3 Blackf. 136. Vide Arm of the sea; Reliction; River.

passable