Areas of Critical Environmental Concern (ACEC) is a conservation ecology program in the Western United States, managed by the Bureau of Land Management (BLM). The ACEC program was conceived in the 1976 Federal Lands Policy and Management Act (FLPMA), which established the first conservation ecology mandate for the BLM. The FLPMA mandate directs the BLM to protect important riparian corridors, threatened and endangered species habitats, cultural and archeological resources, as well as unique scenic landscapes that the agency assesses as in need of special management attention.
To be considered a potential ACEC an area must meet criteria of both relevance and importance.
An area meets the relevance criteria of an ACEC if it contains one or more of the following:
An area meets the importance criteria if it is characterized by one or more of the following:
(For more detailed descriptions of the following sites see)
The Grand Staircase–Escalante National Monument (GSENM) is a United States national monument originally designated in 1996 as 1,880,461 acres (7,610 km2) of protected land in southern Utah. In 2017, the monument's size was reduced by half in a succeeding presidential proclamation. The land is among the most remote in the country; it was the last to be mapped in the contiguous United States.
The Monongahela National Forest is a national forest located in the Allegheny Mountains of eastern West Virginia, USA. It protects over 921,000 acres of federally owned land within a 1,700,000 acres proclamation boundary that includes much of the Potomac Highlands Region and portions of 10 counties.
The Hells Canyon Wilderness is a wilderness area in the western United States, in Idaho and Oregon. Created 46 years ago in 1975, the Wilderness is managed by both the U.S. Bureau of Land Management and the U.S. Forest Service and contains some of the most spectacular sections of the Snake River as it winds its way through Hells Canyon, North America's deepest river gorge and one of the deepest gorges on Earth. The Oregon Wilderness Act of 1984 added additional acreage and currently the area protects a total area of 217,927 acres (88,192 ha). It lies entirely within the Hells Canyon National Recreation Area except for a small 946-acre (383 ha) plot in southeastern Wallowa County, Oregon which is administered by the Bureau of Land Management. The area that is administered by the Forest Service consists of portions of the Wallowa, Nez Perce, Payette, and Whitman National Forests.
The Fish Creek Mountains Wilderness is located about 25 miles west of Brawley, California, and southeast of the Vallecito Mountains in the United States. The wilderness is located in the Fish Creek Mountains region in the northern part of the Carrizo Impact Area, which is closed to the public.
National Conservation Lands, formally known as the National Landscape Conservation System, is a 35-million-acre (140,000 km2) collection of lands in 873 federally recognized areas considered to be the crown jewels of the American West. These lands represent 10% of the 258 million acres (1,040,000 km2) managed by the Bureau of Land Management (BLM). The BLM is the largest federal public land manager and is responsible for over 40% of all the federal public land in the nation. The other major federal public land managers include the US Forest Service (USFS), National Park Service (NPS), and the US Fish and Wildlife Service (USFWS).
The Big Morongo Canyon Preserve is a 31,000-acres native plants habitat and wildlife preserve located in the Little San Bernardino Mountains of the Transverse Ranges, in the transition zone between the higher Mojave Desert and lower elevation Colorado Desert section of the Sonoran Desert. Due to its location within this transition zone, the area is especially high in natural diversity. The natural spring fed desert oasis found here is one of the 10 largest Cottonwood and Willow riparian habitats in California. It is also identified by the Audubon Society as one of the most important avian habitat areas in California.
The New River is a stream, about 8 miles (13 km) long, on the southern coast of the U.S. state of Oregon. It begins slightly north of Floras Lake, at the confluence of the lake outlet and Floras Creek, and runs north behind a foredune until entering the Pacific Ocean between Bandon and Port Orford.
The Crooked River is a tributary, 125 miles (201 km) long, of the Deschutes River in the U.S. state of Oregon. The river begins at the confluence of the South Fork Crooked River and Beaver Creek. Of the two tributaries, the South Fork Crooked River is the larger and is sometimes considered part of the Crooked River proper. A variant name of the South Fork Crooked River is simply "Crooked River". The Deschutes River flows north into the Columbia River.
According to the California Protected Areas Database (CPAD), in the state of California, United States, there are over 14,000 inventoried protected areas administered by public agencies and non-profits. In addition, there are private conservation areas and other easements. They include almost one-third of California's scenic coastline, including coastal wetlands, estuaries, beaches, and dune systems. The California State Parks system alone has 270 units and covers 1.3 million acres (5,300 km2), with over 280 miles (450 km) of coastline, 625 miles (1,006 km) of lake and river frontage, nearly 18,000 campsites, and 3,000 miles (5,000 km) of hiking, biking, and equestrian trails.
Little Blitzen River is a 12.5-mile (20.1 km) tributary of the Donner und Blitzen River in the U.S. state of Oregon. Little Blitzen River rises on the west flank of Steens Mountain about 20 miles (32 km) southeast of Frenchglen and about 70 miles (110 km) south of Burns in Harney County. Flowing west in a steep-walled canyon, it joins the South Fork Donner und Blitzen River atto form the Donner und Blitzen main stem, which continues north about another 40 miles (64 km) to its mouth at in Malheur Lake. The Donner und Blitzen River was named by soldiers of German origin and translates as "thunder and lightning". Little Blitzen River brings to mind one of Santa Claus's reindeer.
The Trout Creek Mountains are a remote, semi-arid Great Basin mountain range mostly in southeastern Oregon and partially in northern Nevada in the United States. The range's highest point is Orevada View Benchmark, 8,506 feet (2,593 m) above sea level, in Nevada. Disaster Peak, elevation 7,781 feet (2,372 m), is another prominent summit in the Nevada portion of the mountains.
Sleeping Giant Wilderness Study Area is a non-motorized recreation area located on the west side of the Missouri River and Holter Lake located about 30 miles (48 km) north of Helena, Montana. Designated as a wilderness study area in 1981, the Sleeping Giant Wilderness Study Area contains approximately 6,666 acres (2,698 ha) of nearly roadless land, about half of which is forested. A portion of the Lewis and Clark National Historic Trail is contained inside the study area.
The South Fork Eel River Wilderness is a 12,868-acre (5,207 ha) wilderness area located in Mendocino County, California. The wilderness was added to the National Wilderness Preservation System when the United States Congress passed the Northern California Coastal Wild Heritage Wilderness Act in 2006. The Department of the Interior's Bureau of Land Management (BLM) is the agency in charge.
Little Finland is a scenic red rock area, located in a remote section of Clark County, Nevada south of Mesquite, known for its red rock scenery and strangely-shaped, delicate rock formations. The landscape is similar to Valley of Fire State Park, which is about 20 miles (32 km) to the west, across Lake Mead. The rock formations are composed of red Aztec Sandstone, fossil sand dunes. Many of the features are small erosional fins, hence the name.
Sand to Snow National Monument is a U.S. National Monument located in San Bernardino County and into northern Riverside County, Southern California.
Gold Butte National Monument is a United States national monument located in Clark County, Nevada, northeast of Las Vegas and south of Mesquite and Bunkerville. The monument protects nearly 300,000 acres of desert landscapes featuring a wide array of natural and cultural resources, including rock art, sandstone towers, and important wildlife habitat for species including the Mojave Desert tortoise, bighorn sheep, and mountain lion. The area also protects historic ranching and mining sites such as the ghost town of Gold Butte, although little but mine openings, cement foundations, and a few pieces of rusting equipment remains. The monument is managed by the Bureau of Land Management.
Grape Creek is a tributary of the Arkansas River that flows through Custer and Fremont counties in South-Central Colorado. The creek drains much of the Wet Mountain Valley, located between the Sangre de Cristo Mountains and the Wet Mountains in Custer County.
Irish Canyon is a valley in Moffat County in northwestern Colorado at 6,099 feet [CONVERT?] in elevation according to United States Geological Survey (USGS). The Bureau of Land Management states that the elevations rise from 6,100 to 8,636 feet. It is a scenic canyon and somewhat remote. It is designated both as the Irish Canyon Natural Area and Irish Canyon Area of Critical Environmental Concern.