Individuals have no right to make that several to themselves, •which ought to be common to the public. For this reason an exclusive appropriation of any part of the ship canal in Buffalo for any purpose whatever, would be an illegal encroachment thereon. It might not be, technically speaking, a purpresture, for that would involve an encroachment on the bed of the ship canal. Such an act, too, might or might not amount to a public nuisance. Every encroachment is not a public nuisance. To make it such, damage to the public right of navigation or other public right, must be shown to exist. (Willard Eq. [Potter’s ed.], 399, et seq.; Kerr on Inj., 395.) Lord Hale, in the “De jure Haris,” (11), says : “ It is not every building below the high-water mark, nor every building below the low-water mark, that is ipso facto in law a nuisance, for that would destroy all the quays in England, and prevent the erection of new ones, for the king cannot license a common nuisance. It is not ipso facto a nuisance unless in fact it be a.damage to the port or navigation, and whether it be a nuisance or not, is questio facti, and to be determined by a jury upon evidence, and not questio yurisP The distinction between the two classes of wrongs is thus pointed out, in Attorney-General v. Richards (2 Anst., 606): “ Where thejus pubUcum is violated, it is a nuisance, and it frequently happens that a nuisance in a port is accompanied with a purpresture, or encroachment on the soil of the crown.” And Chancellor Kent gives the same definition (Atty.-Gen. v. Utica Ins. Co., 2 Johns. Ch., 381.) It is not important in this case however, to deal with definitions, for if the acts of the *520defendants, in the use of their elevator, obstructed navigation in the ship canal, they amounted to a nuisance; and in determining the question of obstruction, it is sufficient if it appears that the navigation has been rendered less convenient or less safe than formerly. The public have the right to the free use of the harbor, subject to such regulations as have been established by law, and the right to regulate and control the use of the harbor belongs to the sovereign power. It is the infringement of one or both of these rights that constitutes a nuisance in a harbor. (Hart v. The Mayor, 9 Wend., 571.) The true question in a case of nuisance in a port is, whether or not a damage occurs to the navigation in the particular locality. If the thing complained of be a hindrance to the navigation, it is no defense, that the public inconvenience is counter-balanced by the benefit to be afforded by it. (Rex v. Ward, 4 A. & E., 386; Reg. v. Betts, 16 Q. B., 1023.) But all the authorities concur in holding, that whether any given encroachment upon a public or private right is a nuisance or not, is a question of fact.
In the case before us the proofs do not show, nor is the fact found, that the elevator of the defendants is, of itself, a nuisance, nor that the use thereof has produced any material obstruction to the free and common use of the ship canal by other vessels. Nor does it appear that any objection to the manner in which the defendants used their elevator, was ever made by those to whom the regulation of the use of the ship canal has been intrusted by law, or that any complaint was ever made by others who used the ship cana], that the defendants’ use of the elevator impeded navigation therein.
The material facts found are, that the elevator is adapted for use at all places in the harbor of Buffalo for the purpose of unloading-vessels that are aground, but that its use has been mostly confined to a particular locality in the ship canal, where the defendants have carried on the business of transferring cargoes of grain from propellers and other water craft to canal boats, and that such latter use is an unnecessary, unreasonable, and unlawful use of the said ship canal and harbor of Buffalo, and is an unnecessary, unreasonable, and unlawful obstruction to the trade and commerce carried on in said ship canal and in the harbor of Buffalo. Hence it is found as a conclusion of law, that the people are entitled to a perpetual injunction restraining the defendants, not merely from using their *521elevator in the illegal manner stated, bnt from using it in the ship canal, as a means, and in the business of loading and unloading vessels freighted with grain in bulk, when, and in instances where, the vessel being loaded or unloaded is not aground or otherwise disabled, and is capable of being navigated, and judgment was rendered accordingly.
These facts clearly do not show that the mere presence in the ship canal of the floating elevator in question, is an unlawful encroachment thereon. On the contrary, the judgment-under review concedes the right to use it for the purpose of unloading vessels that are aground or otherwise disabled. If it can be used for that purpose, it is difficult to perceive why it may not be used for any other purpose to which it is adapted. It takes up no more space, and produces no other or different effect upon the rights of others who are entitled to participate in the use of the ship canal, whether the vessel to be loaded or unloaded is afloat and seaworthy, or aground and disabled. There is no principle of law that we are aware of, that will justify the discrimination which has been sanctioned, we think inadvertently, by the court below. If the plaintiffs are entitled to any remedy, it should have been limited to a redress of the wrong which the court found the defendants had committed, namely, the use of the elevator in the manner which the court adjudged was unlawful and unreasonable.
With respect to the continued use of the elevator, at a particular locality in the ship canal, it does not appear that it was done under any claim of a right to appropriate a part of the ship canal, exclusively, or with intent to commit a trespass. Putting the most unfavorable construction upon the conduct of the defendants, it amounts to no more than an unwarranted invasion of a public fight, unattended, however, by any material injury, either public or private. An ample remedy for all such grievances has been provided by the police powers on this subject, vested in the common council of the city of Buffalo. That body has power to enact ordinances, empowering the harbor masters to prescribe and regulate the location of all vessels, boats or floats, and to compel them to change their location. It has exercised the power by enacting ordinances which authorize and direct the harbor masters to give such orders and directions as they deem just and proper relative to *522the location and change of station of every steamboat, or other craft or vessel or float in the harbor of Buffalo, and -which imposes a penalty of twenty-five dollars for every neglect or refusal to comply with such orders or directions. It does not appear that the harbor masters ever directed the defendants to change the location of their elevator, and the court below has found as a fact, that there is no evidence that the harbor masters have at any time refused or neglected to perform their duty in reference to any alleged obstruction on the part of the defendants in said ship canal. Inasmuch, therefore, as the public authorities appear to have acquiesced in the wrong committed by the defendants, and such wrong consists merely of the manner in which they have used their elevator, which the court below has found to be unnecessary, and the wrong can be- effectually remedied by a change of such use, whenever directed by the harbor masters, an exercise of the equitable jurisdiction of the court would seem to be unnecessary, except for the purpose of establishing rights which nobody disputes, or of redressing a technical grievance which has produced no substantial or material injury. The jurisdiction of courts of equity in cases of purpr’es-ture, as well as of public nuisances generally, rests in the necessity of preventing irreparable mischief, or of avoiding vexatious litigation. Although its jurisdiction in such cases is well established, yet it will not be exercised where the object can be as well attained in the ordinary tribunals, or by other means specially provided by law for that purpose. (Atty.-Gen. ex rel. Gloucester v. Brown, 24 N. J. Eq., 89; Coulson v. White, 3 Atk., 21; 2 Eden on Inj., 272.) Ample power has been vested in the harbor masters to redress, summarily, the wrong complained of in this case, and we think enough has not been shown to justify the extraordinary interposition of a court of equity,' and more especially to warrant a' judgment which in effect prohibits, as being illegal, any use of floating elevators in the harbor of Buffalo, except for the purpose of relieving vessels in distress.
The judgment must be reversed and a new trial granted, with costs to abide the event.
Ordered accordingly.