Hahn

Appellee environmental groups Idaho Watersheds Project, and Committee For Idaho’s High Desert (“Environmental Groups”) brought suit in federal district court alleging, inter alia, violation of the National Environmental Policy Act (“NEPA”) by the Bureau of Land Management (“BLM”) in the exercise of its resource management responsibilities and particularly in the issuance of grazing permits to cattle ranchers (“Ranchers” or “Cattle Ranchers”) on federal lands in the Owyhee Resource Area (“Owyhee Area” or “Owyhee”). The district court found that the BLM had violated NEPA and granted a permanent injunction imposing interim conditions on grazing and imposing a timetable for the BLM to issue new permits in compliance with NEPA. The Ranchers and the BLM contest the issuance of the injunction. We have jurisdiction pursuant to 28 U.S.C. § 1292 and we affirm.

I. FACTUAL AND PROCEDURAL BACKGROUND

A. The Ouryhee Resource Area And Cattle Overgrazing

The Owyhee Resource Area covers over one million acres of ruggedly beautiful *821 landscape in southwestern Idaho bounded on the west by Oregon, on the south by Nevada, and on the north by the Snake River. Deep Creek, South Fork Owyhee…