California · 238 of 1,120 · BLM's list, read Oct 20, 2026
California
238 areas, 7,904,351 acres, some of them in Nevada, which BLM's California office also manages. At least 179 of them have a claim, lease or right of way inside the line, or a grazing allotment across it.
Every Area of Critical Environmental Concern BLM's California office holds, the ones with the most inside the line first. Each row opens the area's page: its line, what BLM found there and what sits inside it.
Every area, the most inside first
- Fremont-Kramer409,826 acres · at least 1,487 active mining claims and 684 more BLM lists as Filed, 52 rights of way, 5 grazing allotments covering part of it1,544inside
- Pinto Mountains115,540 acres · at least 983 active mining claims and 220 more BLM lists as Filed or Under Review, 17 rights of way1,000inside
- Ivanpah86,428 acres · at least 703 active mining claims and 637 more BLM lists as Filed, 42 rights of way, a grazing allotment covering part of it746inside
- Picacho197,148 acres · at least 458 active mining claims and 186 more BLM lists as Filed, 34 rights of way492inside
- Superior-Cronese518,461 acres · at least 429 active mining claims and 244 more BLM lists as Filed or Under Review, 55 rights of way, a grazing allotment covering part of it485inside
- Ord-Rodman239,474 acres · at least 287 active mining claims and 94 more BLM lists as Filed, 26 rights of way, 3 grazing allotments covering part of it316inside
- Cadiz Valley211,428 acres · at least 231 active mining claims, 5 rights of way236inside
- Castle Mountain3,695 acres · at least 126 active mining claims and 317 more BLM lists as Filed126inside
- Mohave Ground Squirrel213,299 acres · at least 32 active mining claims and 370 more BLM lists as Filed, 72 rights of way, 10 grazing allotments covering part of it114inside
- Chuckwalla649,066 acres · at least 16 active mining claims and 7 more BLM lists as Filed, 89 rights of way105inside
- Shadow Valley211,614 acres · at least 34 active mining claims and 161 more BLM lists as Filed, 61 rights of way95inside
- Amargosa South161,328 acres · at least 68 active mining claims and 15 more BLM lists as Filed or Under Review, 26 rights of way, a grazing allotment covering part of it95inside
- Dagget Ridge Monkey Flower35,800 acres · at least 87 active mining claims and 14 more BLM lists as Filed, 4 rights of way, 2 grazing allotments covering part of it93inside
- Lokern-Buena Vista69,389 acres · 29 oil and gas leases, 59 rights of way, 4 grazing allotments covering part of it92inside
- Panoche/Coalinga55,210 acres · 28 oil and gas leases, 29 rights of way, 24 grazing allotments covering part of it81inside
- Amargosa North124,317 acres · at least 65 active mining claims, 10 rights of way75inside
- El Paso to Golden63,372 acres · at least 46 active mining claims and 111 more BLM lists as Filed, 20 rights of way, a grazing allotment covering part of it67inside
- Northen Lucerne Wildlife Linkage42,452 acres · at least 57 active mining claims and 201 more BLM lists as Filed, 7 rights of way, a grazing allotment covering part of it65inside
- Grass Valley Creek19,575 acres · 61 rights of way61inside
- Chemehuevi924,200 acres · at least 17 active mining claims and 28 more BLM lists as Filed, 36 rights of way, a grazing allotment covering part of it54inside
- Kettleman Hills28,813 acres · 26 oil and gas leases, 18 rights of way, 2 grazing allotments covering part of it46inside
- Jawbone/Butterbredt190,513 acres · at least 10 active mining claims and 15 more BLM lists as Under Review or Filed, 26 rights of way, 9 grazing allotments covering part of it45inside
- Brisbane Valley Monkey Flower17,981 acres · at least 38 active mining claims and 6 more BLM lists as Filed, 1 right of way, a grazing allotment covering part of it40inside
- Granite Mountain Corridor60,175 acres · at least 21 active mining claims and 3 more BLM lists as Filed or Under Review, 17 rights of way, 2 grazing allotments covering part of it40inside
- Panamints and Argus104,523 acres · at least 17 active mining claims and 43 more BLM lists as Filed or Submitted, 21 rights of way38inside
- Sacramento River Bend20,431 acres · 28 rights of way, 8 grazing allotments covering part of it36inside
- Upper and Lower Clear Creek4,561 acres · at least 3 active mining claims and 4 more BLM lists as Filed, 32 rights of way35inside
- Bristol236,296 acres · at least 3 active mining claims and 99 more BLM lists as Filed, 31 rights of way34inside
- Chuckwalla to Chemehuevi tortoise linkage372,965 acres · at least 1 mining claim BLM lists as Filed, 32 rights of way, a grazing allotment covering part of it33inside
- Yuha Basin81,579 acres · 33 rights of way33inside
- Eagle Lake Basin32,033 acres · at least 1 mining claim BLM lists as Filed, 21 rights of way, 10 grazing allotments covering part of it31inside
- Santos Manuel40,151 acres · at least 2 active mining claims, 29 rights of way31inside
- Pisgah53,884 acres · at least 15 active mining claims and 3 more BLM lists as Filed, 14 rights of way29inside
- Carbonate Endemic Plants RNA6,395 acres · at least 25 active mining claims and 132 more BLM lists as Filed, 2 rights of way, a grazing allotment covering part of it28inside
- Western Rand Mountains31,898 acres · at least 17 active mining claims and 4 more BLM lists as Filed, 9 rights of way, a grazing allotment covering part of it27inside
- Sierra Canyons28,608 acres · 24 rights of way, 3 grazing allotments covering part of it27inside
- Upper McCoy40,628 acres · at least 24 active mining claims, 2 rights of way26inside
- Mountain Pass Dinosaur Trackway596 acres · at least 24 active mining claims24inside
- Bagby Serpentine5,787 acres · at least 12 active mining claims and 6 more BLM lists as Filed, 10 rights of way, a grazing allotment covering part of it23inside
- Owens Lake22,257 acres · at least 6 mining claims BLM lists as Filed, 21 rights of way, a grazing allotment covering part of it22inside
- Kaweah33,595 acres · at least 3 mining claims BLM lists as Filed, 11 rights of way, 11 grazing allotments covering part of it22inside
- Clear Creek Serpentine29,146 acres · at least 4 mining claims BLM lists as Filed, 14 rights of way, 7 grazing allotments covering part of it21inside
- Cerro Gordo10,464 acres · at least 15 active mining claims and 29 more BLM lists as Filed, 2 rights of way, a grazing allotment covering part of it18inside
- Piute-Fenner178,838 acres · at least 4 active mining claims and 1 more BLM lists as Filed, 14 rights of way18inside
- East Mesa94,183 acres · 4 geothermal leases, 14 rights of way18inside
- Old Woman Springs Wildlife Linkage61,171 acres · at least 5 active mining claims and 176 more BLM lists as Filed or Under Review, 9 rights of way, 3 grazing allotments covering part of it17inside
- Pipes Canyon59,830 acres · 17 rights of way17inside
- McCoy Valley30,554 acres · at least 13 active mining claims, 4 rights of way17inside
- Upper Cuyama Valley15,628 acres · 12 rights of way, 5 grazing allotments covering part of it17inside
- Soda Mountains Expansion18,817 acres · at least 1 mining claim BLM lists as Filed, 16 rights of way16inside
- Ocotillo14,908 acres · at least 1 mining claim BLM lists as Filed, 16 rights of way16inside
- Hopper Mountain4,518 acres · 4 oil and gas leases, 12 rights of way16inside
- Whitewater Canyon16,415 acres · at least 2 active mining claims, 13 rights of way15inside
- Big Morongo Canyon28,275 acres · 14 rights of way14inside
- Merced River3,810 acres · at least 4 active mining claims and 2 more BLM lists as Filed, 6 rights of way, 3 grazing allotments covering part of it13inside
- Olancha Greasewood29,345 acres · 10 rights of way, 3 grazing allotments covering part of it13inside
- Limestone Salamander2,179 acres · at least 7 active mining claims and 1 more BLM lists as Filed, 1 right of way, 4 grazing allotments covering part of it12inside
- Red Hills9,920 acres · at least 1 mining claim BLM lists as Filed, 8 rights of way, 3 grazing allotments covering part of it11inside
- Slinkard Valley16,650 acres · 5 rights of way, 6 grazing allotments covering part of it11inside
- In-Ko-Pah Mountains9,764 acres · at least 8 active mining claims, 3 rights of way11inside
- Emigrant Trails1,678 acres · 4 rights of way, 7 grazing allotments covering part of it11inside
- Mule McCoy Linkage60,261 acres · at least 2 active mining claims and 22 more BLM lists as Filed, 8 rights of way10inside
- Kingston Range19,632 acres · at least 6 active mining claims, 3 rights of way, a grazing allotment covering part of it10inside
- Last Chance Canyon5,934 acres · at least 7 active mining claims and 7 more BLM lists as Filed, a grazing allotment covering part of it8inside
- Conway Summit2,845 acres · at least 1 active mining claim and 2 more BLM lists as Filed, 2 rights of way, 5 grazing allotments covering part of it8inside
- West Mesa100,863 acres · 8 rights of way8inside
- Piute Cypress2,510 acres · at least 2 active mining claims and 3 more BLM lists as Filed, 1 right of way, 4 grazing allotments covering part of it7inside
- Forks of Butte Creek2,901 acres · at least 1 mining claim BLM lists as Filed, 7 rights of way7inside
- Eagles Flyway11,906 acres · 5 rights of way, 2 grazing allotments covering part of it7inside
- Susan River2,490 acres · 7 rights of way7inside
- Santa Ana River Wash756 acres · 7 rights of way7inside
- Middle Knob20,533 acres · at least 1 mining claim BLM lists as Filed, 5 rights of way, a grazing allotment covering part of it6inside
- Massacre Rim48,423 acres · 6 grazing allotments covering part of it6inside
- Dos Palmas15,120 acres · 6 rights of way6inside
- Knoxville4,263 acres · 5 rights of way, a grazing allotment covering part of it6inside
- Kuchamaa1,294 acres · 6 rights of way6inside
- Mojave Fishhook Cactus637 acres · 5 rights of way, a grazing allotment covering part of it6inside
- Coolgardie Mesa13,253 acres · at least 3 active mining claims and 5 more BLM lists as Filed, 2 rights of way5inside
- Afton Canyon9,195 acres · at least 1 mining claim BLM lists as Filed, 5 rights of way5inside
- Shasta and Klamath River Canyon1,271 acres · at least 1 mining claim BLM lists as Filed, 5 rights of way5inside
- Palen Ford54,936 acres · 5 rights of way5inside
- Dead Mountains28,563 acres · 5 rights of way5inside
- Mojave Fringe-toed Lizard24,678 acres · 5 rights of way5inside
- Coachella Valley Fringe-toed Lizard11,634 acres · 5 rights of way5inside
- Table Mountain5,218 acres · 5 rights of way5inside
- Cyrus Canyon4,423 acres · 1 right of way, 4 grazing allotments covering part of it5inside
- Independence Creek WSA6,480 acres · at least 1 mining claim BLM lists as Filed, 4 grazing allotments covering part of it4inside
- Fish Slough39,448 acres · 4 grazing allotments covering part of it4inside
- Patton Military Camps20,410 acres · 3 rights of way, a grazing allotment covering part of it4inside
- Great Falls Basin11,094 acres · at least 1 active mining claim, 3 rights of way4inside
- Alligator Rock7,742 acres · 4 rights of way4inside
- Joaquin Rocks7,303 acres · 4 grazing allotments covering part of it4inside
- Bodie Bowl7,268 acres · 1 right of way, 3 grazing allotments covering part of it4inside
- Erskine Creek4,146 acres · at least 2 active mining claims, 2 grazing allotments covering part of it4inside
- Pine Hill3,277 acres · at least 3 active mining claims, 1 right of way4inside
- Old Growth Juniper3,146 acres · 4 grazing allotments covering part of it4inside
- Corn Springs2,462 acres · at least 3 active mining claims, 1 right of way4inside
- White Mountains WSA1,665 acres · 4 grazing allotments covering part of it4inside
- Fossil Falls1,662 acres · 2 rights of way, 2 grazing allotments covering part of it4inside
- Mattole Beach798 acres · 1 right of way, 3 grazing allotments covering part of it4inside
- Deadmans Flat745 acres · at least 1 active mining claim, 3 rights of way4inside
- Halloran Wash1,744 acres · at least 23 mining claims BLM lists as Filed, 3 rights of way3inside
- Symmes Creek WSA8,372 acres · at least 3 mining claims BLM lists as Filed, 1 right of way, 2 grazing allotments covering part of it3inside
- Manzanar573 acres · at least 2 mining claims BLM lists as Filed, 1 right of way, 2 grazing allotments covering part of it3inside
- Buffalo Creek Canyons35,663 acres · 3 grazing allotments covering part of it3inside
- Timbered Crater WSA18,051 acres · 3 grazing allotments covering part of it3inside
- Horse Canyon6,892 acres · at least 2 active mining claims, a grazing allotment covering part of it3inside
- Million Dollar Spring6,353 acres · 1 right of way, 2 grazing allotments covering part of it3inside
- Coyote Mountains Fossil Site5,876 acres · at least 3 active mining claims3inside
- Crater Mountain5,766 acres · 3 grazing allotments covering part of it3inside
- Santa Margarita Ecological Reserve5,549 acres · 3 rights of way3inside
- Beegum Creek Gorge4,486 acres · 3 rights of way3inside
- Johnson Canyon3,985 acres · at least 1 active mining claim, 2 rights of way3inside
- Mountain Peaks3,800 acres · 3 grazing allotments covering part of it3inside
- Willis Ridge3,188 acres · 1 right of way, 2 grazing allotments covering part of it3inside
- Butte Creek2,298 acres · 3 rights of way3inside
- Willow Creek2,143 acres · 3 grazing allotments covering part of it3inside
- Bitner1,924 acres · 2 rights of way, a grazing allotment covering part of it3inside
- Yankee Jim1,726 acres · 3 grazing allotments covering part of it3inside
- Mount Dome1,510 acres · 3 grazing allotments covering part of it3inside
- Sheep Rock1,411 acres · 1 right of way, 2 grazing allotments covering part of it3inside
- Iaqua Buttes1,112 acres · 3 rights of way3inside
- Bitter Creek1,025 acres · 3 grazing allotments covering part of it3inside
- Stornetta885 acres · 1 right of way, 2 grazing allotments covering part of it3inside
- Rose Spring838 acres · 3 grazing allotments covering part of it3inside
- White Mountain City820 acres · 1 right of way, 2 grazing allotments covering part of it3inside
- Plank Road416 acres · 3 rights of way3inside
- North Dry Valley10,265 acres · 2 grazing allotments covering part of it2inside
- San Sebastian Marsh/San Felipe Creek6,584 acres · 2 rights of way2inside
- Mesquite Hills/Crucero5,031 acres · 2 rights of way2inside
- Lake Cahuilla - D4,724 acres · 2 rights of way2inside
- Chico Martinez4,614 acres · 2 grazing allotments covering part of it2inside
- Rainbow Basin/Owl Canyon4,104 acres · 2 rights of way2inside
- Walker Ridge3,433 acres · 2 rights of way2inside
- Pine Dunes2,861 acres · 1 right of way, a grazing allotment covering part of it2inside
- Sand Canyon2,629 acres · 2 rights of way2inside
- North Fork Cosumnes River1,136 acres · at least 1 active mining claim, 1 right of way2inside
- Rahilly-Gravelly956 acres · 2 grazing allotments covering part of it2inside
- Harper Dry Lake485 acres · 2 rights of way2inside
- Bedrock Spring442 acres · 2 grazing allotments covering part of it2inside
- Dutch Flat/Indian Hill RNA317 acres · 2 rights of way2inside
- Compensation Lands281 acres · 1 right of way, a grazing allotment covering part of it2inside
- Bendire's Thrasher9,780 acres · at least 1 active mining claim and 71 more BLM lists as Filed1inside
- Mesquite Lake6,761 acres · at least 20 mining claims BLM lists as Filed, a grazing allotment covering part of it1inside
- Cady Mountains WSA117,643 acres · at least 1 active mining claim and 1 more BLM lists as Filed1inside
- Soda Mountains WSA93,119 acres · 1 right of way1inside
- Turtle Mountains51,980 acres · 1 right of way1inside
- Desert Tortoise Research Natural Area25,346 acres · 1 right of way1inside
- Potrero12,972 acres · 1 right of way1inside
- Blue Ridge11,064 acres · a grazing allotment covering part of it1inside
- Eden Valley10,814 acres · 1 right of way1inside
- McCoy Wash7,834 acres · 1 right of way1inside
- Salton Sea Hazardous7,254 acres · 1 right of way1inside
- Cedar Roughs6,379 acres · a grazing allotment covering part of it1inside
- Rodman Mountains Cultural Area6,208 acres · a grazing allotment covering part of it1inside
- Bigelow Cholla5,749 acres · 1 right of way1inside
- Lake Cahuilla - C5,595 acres · 1 right of way1inside
- Juniper Flats2,387 acres · a grazing allotment covering part of it1inside
- Salt Creek Hills2,207 acres · 1 right of way1inside
- Cosumnes River2,033 acres · 1 right of way1inside
- Singer Geoglyphs1,853 acres · at least 1 active mining claim1inside
- Conglomerate Mesa1,725 acres · a grazing allotment covering part of it1inside
- Ancient Lakeshores - Sand Ridge1,600 acres · a grazing allotment covering part of it1inside
- Ayers Rock1,526 acres · a grazing allotment covering part of it1inside
- Ash Valley1,225 acres · a grazing allotment covering part of it1inside
- Black Mountain1,124 acres · a grazing allotment covering part of it1inside
- Cedar Canyon1,002 acres · a grazing allotment covering part of it1inside
- Lower Smoke Creek894 acres · a grazing allotment covering part of it1inside
- Deer Creek567 acres · a grazing allotment covering part of it1inside
- Swasey Drive469 acres · 1 right of way1inside
- Ancient Lakeshores - Alkali Sinks402 acres · 1 right of way1inside
- Corning Vernal Pools173 acres · 1 right of way1inside
- Travertine Hot Springs162 acres · a grazing allotment covering part of it1inside
- Steam Well41 acres · a grazing allotment covering part of it1inside
- Ancient Lakeshores - Goose Lake40 acres · 1 right of way1inside
- Panamint Lake23,106 acres · at least 26 mining claims BLM lists as Filed0inside
- Whipple Mountains3,147 acres · at least 7 mining claims BLM lists as Filed0inside
- Black Mountain61,721 acres · at least 5 mining claims BLM lists as Filed0inside
- Barstow Woolly Sunflower36,344 acres · at least 3 mining claims BLM lists as Submitted0inside
- Avawatz Mountains WSA53,159 acres · nothing placed inside0inside
- Kingston Range WSA42,371 acres · nothing placed inside0inside
- Death Valley 17 WSA21,081 acres · nothing placed inside0inside
- Cache Creek Corridor19,764 acres · nothing placed inside0inside
- Lake Cahuilla Shoreline11,879 acres · nothing placed inside0inside
- Cronese Basin10,201 acres · nothing placed inside0inside
- Gilham Butte9,339 acres · nothing placed inside0inside
- Fort Ord Public Lands7,265 acres · nothing placed inside0inside
- Surprise Canyon4,643 acres · nothing placed inside0inside
- Mule Mountains4,091 acres · nothing placed inside0inside
- Trona Pinnacles4,058 acres · nothing placed inside0inside
- Palen Dry Lake3,636 acres · nothing placed inside0inside
- Cypress Mountain3,036 acres · nothing placed inside0inside
- Manix2,902 acres · nothing placed inside0inside
- Southern Inyo WSA2,808 acres · nothing placed inside0inside
- Lake Cahuilla - B2,529 acres · nothing placed inside0inside
- Salinas River2,347 acres · nothing placed inside0inside
- Chuckwalla Valley Dune Thicket2,278 acres · nothing placed inside0inside
- Lacks Creek2,268 acres · nothing placed inside0inside
- Keynot Peak2,164 acres · nothing placed inside0inside
- Desert Lily Preserve2,059 acres · nothing placed inside0inside
- Mopah Spring1,922 acres · nothing placed inside0inside
- Indian Pass1,887 acres · nothing placed inside0inside
- Cedars1,558 acres · nothing placed inside0inside
- Saline Valley1,390 acres · nothing placed inside0inside
- Tierra Redonda1,312 acres · nothing placed inside0inside
- West Paradise1,232 acres · nothing placed inside0inside
- Lake Cahuilla - A1,232 acres · nothing placed inside0inside
- Mill Creek948 acres · nothing placed inside0inside
- Calico Early Man Site899 acres · nothing placed inside0inside
- Parish's Phacelia899 acres · nothing placed inside0inside
- Pilot Knob868 acres · nothing placed inside0inside
- Short Canyon754 acres · nothing placed inside0inside
- Red Mountain Spring718 acres · nothing placed inside0inside
- Amboy Crater640 acres · nothing placed inside0inside
- Cerro Gordo WSA626 acres · nothing placed inside0inside
- North Fork Eel500 acres · nothing placed inside0inside
- Upper Mattole459 acres · nothing placed inside0inside
- Denning Springs446 acres · nothing placed inside0inside
- Warm Sulfur Springs348 acres · nothing placed inside0inside
- Upper Johnson Valley Yucca Rings329 acres · nothing placed inside0inside
- Big Rock Creek Wash309 acres · nothing placed inside0inside
- Ione Manzanita274 acres · nothing placed inside0inside
- Black Forest254 acres · nothing placed inside0inside
- Marble Mountain Fossil Bed232 acres · nothing placed inside0inside
- Upper Burney Dry Lake and Baker Cypress209 acres · nothing placed inside0inside
- Soggy Dry Lake Creosote Rings186 acres · nothing placed inside0inside
- Ma-le'l Dunes181 acres · nothing placed inside0inside
- Nissenan Manzanita130 acres · nothing placed inside0inside
- Indian Valley101 acres · nothing placed inside0inside
- Ione Tertiary Oxisol Soil92 acres · nothing placed inside0inside
- Sacramento Island91 acres · nothing placed inside0inside
- Upper Klamath Bench89 acres · nothing placed inside0inside
- Point Sal82 acres · nothing placed inside0inside
- Spivey Pond54 acres · nothing placed inside0inside
- North Table Mountain53 acres · nothing placed inside0inside
- Lost Valley39 acres · nothing placed inside0inside
- Hawes Corner38 acres · nothing placed inside0inside
- Los Osos4.7 acres · nothing placed inside0inside
SheetCaliforniaLines238Acres7,904,351Inked1980 to 2024ReadOct 20, 2026
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