National Monuments, National Conservation Areas and Similar Designations Summary Tables  

For detailed State-level information on National Monuments, National Conservation Areas, and Similar Designations visit the detail table or select the State of interest below.

 

National Monuments

StateNumberBLM Acres
Arizona62,307,525
California*92,785,903
Colorado2185,793
Idaho1275,076
Montana2377,397
Nevada31,443,354
New Mexico4749,166
Oregon*1107,653
Utah32,945,758
Washington1970
Totals3111,178,595

National Monuments: as of January 2026. Data are generalized for informal use. Conditions on the ground may differ.

*Cascade-Siskiyou National Monument is in both California and Oregon, it is counted only once in the totals and acreage is assigned to the respective State. 

 

National Conservation Areas

StateNumberBLM Acres
Alaska11,208,624
Arizona3120,170
California162,562
Colorado*3391,711
Idaho1483,700
Nevada51,208,439
New Mexico2251,976
Utah*4143,304
Totals193,870,485

National Conservation Areas: as of January 2026. Data are generalized for informal use. Conditions on the ground may differ.

*McInnis Canyons National Conservation Area is in both Colorado and Utah, it is counted only once in the totals and acreage is assigned to the respective State.

 

National Scenic Area

StateNumberBLM Acres
California118,610
Totals118,610

As of January 2026. Data are generalized for informal use. Conditions on the ground may differ.

 

Cooperative Management and Protection Area

StateNumberBLM Acres
Oregon1428,440
Totals1428,440

As of January 2026. Data are generalized for informal use. Conditions on the ground may differ.

 

Outstanding Natural Area

StateNumberBLM Acres
California120
Eastern States (Florida)186
Oregon195
Totals3201

As of January 2026. Data are generalized for informal use. Conditions on the ground may differ.

 

Forest Reserve

StateNumberBLM Acres
California17,472
Totals17,472

As of January 2026. Data are generalized for informal use. Conditions on the ground may differ.