THOMPSON, Circuit Judge,
Dissenting in part:
Because effective relief from the allegedly unlawful harvesting of old growth timber at Grade/Dukes is not within the powers of this court, the plaintiffs’ claims under the National Forest Management Act (“NFMA”), 16 U.S.C. §§ 1600-1687, are moot. I respectfully dissent from the majority’s decision and judgment regarding those claims, but concur in the majority’s decision and judgment as to the plaintiffs’ claim under the National Environmental Policy Act (“NEPA”), 42 U.S.C. §§ 432N4370Í.
“The duty of this court, as of every other judicial tribunal, is to decide actual controversies by a judgment which can be carried into effect, and not to give opinions upon moot questions.... ” Mills v. Green, 159 U.S. 651, 653, 16 S.Ct. 132, 40 L.Ed. 293 (1895). If we cannot grant effective relief, we lack jurisdiction. Church of Scientology v. United States, 506 U.S. 9, 12, 113 S.Ct. 447, 121 L.Ed.2d 313 (1992); IRS v. Pattullo (In re Pattullo), 271 F.3d 898, 901 (9th Cir.2001) (per curiam).
As the majority acknowledges, the original relief sought by the plaintiffs as to the NFMA claims — an injunction prohibiting further logging at Grade/Dukes — is no longer available. Cf Headwaters, Inc. v. Bureau of Land Mgmt., 893 F.2d 1012, 1015 (9th Cir.1989). To avoid mootness, the majority relies upon the proposition that an environmental case is not mooted by the completion of allegedly unlawful agency action so long as alternative mitigation measures might still be ordered. See Cantrell v. City of Long Beach, 241 F.3d 674, 678-79 (9th Cir.2001). According to the majority, three types of mitigation might still be ordered in this case: (1) a prohibition on future logging; (2) construction of artificial habitat; or (3) studies on the effects of any unlawful logging and possible mitigation. None of these constitutes effective mitigation within the power of this court. The NFMA claims are moot.
I
The majority’s first suggestion is that the district court could issue an order prohibiting future logging sales. Such a prohibition on future logging sales exceeds the powers of this court and is unnecessary.
In Ohio Forestry Association v. Sierra Club, 523 U.S. 726, 732-38, 118 S.Ct. 1665, 140 L.Ed.2d 921 (1998), the Court held that we may not adjudicate the merits of a forest plan under the NFMA outside the context of a particular final agency action, e.g. a logging sale. A forest plan, the Court explained, is not a final agency action because it “does not give anyone a legal right to cut trees, nor does it abolish anyone’s legal authority to object to trees being cut.” Id. at 733, 118 S.Ct. 1665; see also Ecology Ctr., Inc. v. United States Forest Serv., 192 F.3d 922, 924 (1999) (“Courts are generally precluded, under the ripeness doctrine, from prematurely adjudicating administrative matters until the proper agency has formalized its decision making process.”). Here, the majority proposes enjoining future timber sales if the Grade/Dukes sale was unlawful. This violates Ohio Forest'ry.
The majority relies upon Northwest Environmental Defense Center v. Gordon, 849 F.2d 1241, 1244-45 (9th Cir.1988). There, we held that a challenge to regulations governing the 1986 salmon season was not mooted by the close of the season because effective relief could still be ordered by ordering that more fish be allowed to spawn in 1989. The comparison of Gordon to this case ignores the nature of old growth timber. As we have explained in cases seeking logging injunctions, “old growth forests ... w[ill], if cut,