BLM-Idaho > National Landscape Conservation System > Wilderness Study Areas (WSAs)

Idaho Wilderness Study Report | 1991

In 1978, the BLM began reviewing the lands it administered to ascertain which of them possessed wilderness characteristics, as defined in the Wilderness Act (1964). This review was conducted in each State in three phases: Inventory, Study and Reporting. 

The information below represents the work completed for public lands in Idaho during Phase III (Reporting).  The Report contains the BLM's recommendation of suitability or non-suitability for Wilderness designation of each WSA.  This information was transmitted to Congress through the Secretary of the Interior and the President. 

The list below groups WSAs in Idaho by District (region).  Click on each WSA name to visit the BLM-Idaho webpage for that WSA.  Click on PDF to the right of each WSA name to view or download the part of the 1991 Report which relates to that area.  To the far right are links to the Phase II studies that address each WSA. 

Congress has acted to designate some WSAs addressed in the Report as Wilderness and released some others for multiple use, superseding the recommendations in the Report and the associated Phase II studies. 

LIST Former WSAs :: QUICK FACTS Current WSAs with acreages 
P.L. 111-11 (Omnibus Public Lands Management Act of 2009) | Title I, Subtitle F • Owyhee Wilderness

Report Overview

Record of Decision :: WSA Recommendations 
Summary & Process :: Key Issues & Major Conclusions 

Coeur d'Alene District

Crystal Lake |PDF                                   
Grandmother Mountain |PDF              
Marshall Mountain | PDF                                 North Idaho MFP Amendment      
Selkirk Crest | PDF                                   
Snowhole Rapids | PDF  

Boise District

King Hill Creek (portion) | PDF                      Jarbidge Wilderness EIS 
Box Creek | PDF                                                Statewide Small WSAs EIS 

Twin Falls District

King Hill Creek (portion) |PDF                       Jarbidge Wilderness EIS 
Great Rift |PDF                                                 Great Rift Proposed Wilderness EIS

Black Canyon (Shoshone) | PDF      
Deer Creek | PDF      
Friedman Creek | PDF                                                      
Gooding City of Rocks - East | PDF              Shoshone-Sun Valley Proposed  MFP Amendment
Gooding City of Rocks - West | PDF  
Lava | PDF 
Little City of Rocks | PDF

Bear Den Butte | PDF    
Little Deer | PDF    
Raven's Eye | PDF                                            Monument Wilderness EIS 
Sand Butte | PDF 
Shale Butte | PDF 
Shoshone | PDF

Black Butte | PDF     
Little Wood River |PDF                                   Statewide Small WSAs EIS  
Lower Salmon Falls Creek | PDF     

Idaho Falls District

China Cup Butte | PDF                                       China Cup Butte RNA Wilderness Study Report 
Eighteenmile | PDF                                            Lemhi Resource Area - Eighteenmile Wilderness EIS

Appendicitis Hill | PDF  
Burnt Creek | PDF                                              Big Lost Pahsimeroi Wilderness EIS  
White Knob Mountains | PDF  

Corral-Horse Basin | PDF              
Jerry Peak | PDF                                                Challis Proposed MFP Amendment 
Jerry Peak West | PDF      

Black Canyon (Upper Snake) | PDF  
Cedar Butte | PDF  
Hawley Mountain | PDF                                     Eastern Idaho Proposed MFP Amendment  
Hell's Half Acre |PDF  
Petticoat Peak | PDF 

Snake River Islands | PDF                               Medicine Lodge Wilderness EIS 
Sand Mountain | PDF  

Borah Peak | PDF  
Boulder Creek | PDF  
Goldburg | PDF                                                    Statewide Small WSAs EIS 
Henrys Lake | PDF 
Worm Creek | PDF