To designate as wilderness, wild and scenic rivers, national park and preserve study areas, wild land recovery areas, and biological connecting corridors certain public lands in the States of Idaho, Montana, Oregon, Washington, and Wyoming, and for other purposes.

Northern Rockies Ecosystem Protection Act - Designates the following lands in Idaho, Montana, Oregon, Washington, and Wyoming as wilderness and components of the National Wilderness Preservation System (System): (1) Greater Glacier/Northern Continental Divide ecosystem; (2) Greater Yellowstone ecosystem; (3) Greater Salmon/Selway ecosystem; (4) Greater Cabinet/Yaak/Selkirk ecosystem; (5) Islands...