delivered the Opinion of the Court.
Appellant D. Michael Curran (Curran) appeals an order of the First Judicial District Court, Lewis and Clark County, denying his request for an injunction and dismissing his complaint against the Montana Department of Highways (Department). The Department cross-appeals. We affirm.
Montana Highway 200 crosses Flat Creek on Curran’s property in Lewis and Clark County northeast of Bowmans Corner. In 1985 the Department reconstructed the highway across Curran’s property, removing a large wooden bridge over Flat Creek and replacing it with twin culverts. Construction of the new stream crossing required a United States Army Corps of Engineers permit, which in turn required the concurrence of the United States Environmental Protection Agency, the United States Fish and Wildlife Service, and the Montana Department of Fish, Wildlife and Parks. To obtain the approval of these agencies, the Department revised its original plans and built the twin-culvert structure to conform to their standards.
In February 1986, during a flood caused by melting snow, the new culverts were blocked by ice and debris. The creek overflowed, covering approximately seventeen acres of Curran’s grazing land. The overflow caused erosion and left debris and gravel on the land after the flood subsided. Curran had to move cattle and feed from the affected area and thus was unable to use the land for its ordinary purposes.
In his complaint, filed in April 1987, Curran alleged that the Department had a duty to use ordinary care and skill in replacing the *107existing bridge and that it breached its duty by ignoring stream flow and engineering standards when it installed twin culverts that were too small to handle the flood waters. Causing the resulting flood, Curran charged, was a trespass by the Department. Further, Curran alleged, the new installation created a situation that was likely to recur unpredictably in the future, creating a continuing nuisance and future damages that could not be redressed by a legal remedy.
Curran’s original complaint prayed for past and future damages and for a mandatory injunction requiring the Department to replace the stream crossing with a crossing of adequate size and design that would prevent future flooding of his property, prevent future trespasses, and abate the nuisance.
In November 1990, however, Curran amended his complaint, deleting the request for damages and leaving only the request for a mandatory injunction. The Department moved in July 1991 to deny the injunction, and in June 1992 the District Court granted the Department’s motion and dismissed Curran’s complaint with prejudice. Curran appealed.
We have restated the issues on appeal as follows:
1. Whether a mandatory injunction is an appropriate remedy in this case.
2. Whether the twin-culvert stream crossing created a nuisance under § 27-30-101, MCA.
As our holding on the first issue is dispositive, we do not address the second issue.
A district court may issue an injunction when it appears that the commission or continuance of an act will produce “irreparable injury” to the party seeking such relief. The granting of an injunction is discretionary, and we will sustain it unless an abuse of discretion is shown. Madison Fork Ranch v. L & B Lodge Pole Timber Products (1980), 189 Mont. 292, 302, 615 P.2d 900, 906. The same standard of review applies to a District Court’s denial of an injunction. Smith v. Ravalli County Board of Health (1984), 209 Mont. 292, 679 P.2d 1249. Here, we conclude that the District Court did not abuse its discretion in denying Curran’s request for an injunction.
The Department argues that an injunction is not an appropriate remedy when “a plain, adequate, and speedy remedy at law” is available, and that such a remedy is available in the form of inverse condemnation. The Department relies chiefly on our decision in *108Riddock v. City of Helena (1984), 212 Mont. 390, 687 P.2d 1386. In Riddock we held that:
The landowner’s only remedy for the City’s construction of a pipeline on his land without obtaining an easement is an inverse condemnation action for just compensation for the value of the easement on the date of the taking.
687 P.2d at 1388. Riddock had asked for compensation for an alleged taking of land without compensation, or in the alternative for an injunction requiring the city to remove its pipeline. The court granted summary judgment for the city on the grounds that Riddock, as the successor in interest to the person who had owned the land when the city built the pipeline, had no right to compensation. The former landowner had a right to compensation through inverse condemnation, though he did not pursue it; therefore, an injunction was not an available remedy for Riddock.
Our rule in Riddock is based on the theory that to allow a landowner injunctive relief would permit that landowner to defeat a public entity’s power of eminent domain. 687 P.2d at 1388. We believe that as a matter of public policy the better alternative is to ensure compensation for a damaged landowner, like Curran, by requiring the state to purchase any property it takes for a public purpose. See Hurley v. Kincaid (1932), 285 U.S. 95, 104, 52 S.Ct. 267, 269, 76 L.Ed. 637, 643 (where a federally-sponsored flood control project threatened to flood the plaintiff’s land, failure to compensate him for taking his property “affords no basis for an injunction if such compensation may be procured in an action at law”).
Curran points out that in Riddock the plaintiff did not allege nuisance or trespass and argues that the case should be distinguished. Further, Curran argues, he is not asking for damages in any form, but for an abatement of the nuisance caused by the Department’s stream crossing. He cites a 1909 opinion in which we left open the possibility that an injunction ordering a power company to remove its dam might be warranted. Wilhite v. Billings & Eastern Montana Power Co. (1909), 39 Mont. 1, 101 P. 168.
In Wilhite the defendant’s dam flooded the plaintiff’s land, and the plaintiff requested an order compelling the defendant to lower, remove, or alter its dam in such a way as to avoid further damage to his property. The trial court ordered the power company to rebuild and repair its dam, but we remanded the case for a modified order that merely required the power company to abate the nuisance, commenting that the trial court’s injunction was “entirely too broad *109and drastic,” and that “there is no evidence that it is necessary to rebuild, repair, or remove the dam.” We concluded:
This Court will, in proper cases, order the entry of interlocutory restraining orders, either mandatory or prohibitory, as the case may require; but we find in this record no warrant for making such an order in this case.
101 P. at 171.
Here, too, we find no warrant for an order compelling the Department to reconstruct its stream crossing. If Curran can show, however, that the Department’s stream crossing caused Flat Creek to inundate his land, then he may be entitled to compensation for a physical taking of his property. We held in Knight v. City of Missoula (1992), 252 Mont. 232, 243, 827 P.2d 1270, 1276, that “a property owner may recover in an inverse condemnation action where actual physical damage is proximately caused to his property by a public improvement.”
If Curran’s loss can be compensated, of course, it is not an irreparable injury. He voluntarily waived damages by amending his complaint so as to limit his remedy to a mandatory injunction, but his waiver does not create an irreparable injury. Without a showing of an irreparable injury, Curran is not entitled to a mandatory injunction.
As Curran has not shown that his property was irreparably damaged, or that inverse condemnation would not be an adequate remedy, the District Court concluded correctly that his only remedy is an action for condemnation or damages.
The Department filed a cross-appeal, raising an issue not addressed by the District Court: whether the District Court has jurisdiction to order the Department to replace the stream crossing.
The Department argues that even if the District Court had ordered the Department to rebuild the stream crossing, the Department could not have done so without a permit from the United States Army Corps of Engineers, pursuant to 33 U.S.C. § 404 (the Clean Water Act). Further, the Department argues, because the District Court has no authority to order the Corps of Engineers to issue such a permit, the Department could find itself enjoined to rebuild a bridge that is prohibited by the federal government.
Because we affirm the District Court’s decision to deny the injunction, we need not address this issue. Federal permit requirements would be a consideration only if the District Court had decided to grant the injunction.
Affirmed.
*110CHIEF JUSTICE TURNAGE, JUSTICES HUNT, McDONOUGH and WEBER concur.