Historical Earthquake Records and Seismic Activity Associated with La Garita Wilderness

Rio Grande National Forest: Atlas and Geographic Profile of a Southern Colorado Landscape

Watershed geography and Continental Divide terrain analysis.

Rio Grande National Forest represents an immense protected landscape encompassing diverse terrain from high desert steppe to rugged alpine peaks. This profile details the forest's hydrological significance as the source of the Rio Grande and its role as a massive ecological transition zone in the Mountain West. Examine the boundaries and mountain geography that define this critical protected area.

Area

7,500 km²

Established

1908

Relief

Mountain

Climate

Boreal

Powderhorn Wilderness: A High-Elevation Protected Landscape in the San Juan Mountains

Basaltic plateaus and vast alpine tundra in Colorado

Powderhorn Wilderness protects a distinct highland environment in southwestern Colorado. Characterized by dark basaltic caprocks and deep glacial cirques, this area serves as a critical headwaters system for the Gunnison River, supporting a complex transition from sagebrush steppe to subalpine forest and wind-swept tundra. The geography remains largely defined by its volcanic heritage and the primitive character of its remote plateau summits.

Area

251.1 km²

Established

1993

IUCN

Ib

Relief

Mountain

San Juan National Forest: Geographic Overview of a Major Southern Colorado Protected Landscape

Mapped terrain across the Southern San Juan Mountains

San Juan National Forest represents a massive protected landscape in western Colorado, defined by its rugged alpine peaks, dense conifer forests, and glacial valleys. This atlas entry details the forest boundary, its position along the Continental Divide, and the surrounding transition into the Colorado Plateau. It provides a structured look at the terrain that connects diverse ecosystems, from high-altitude tundra to expansive mesa country, within one of the largest national forests in the American West.

Area

7,603.42 km²

Established

1905

Relief

Mountain

Climate

Alpine

Curecanti National Recreation Area: Mapped Geography and Protected Landscapes of Western Colorado

River-based recreation and volcanic canyon terrain

Curecanti National Recreation Area stretches across Gunnison and Montrose counties, serving as a primary water-based protected landscape in Colorado. The area preserves the geologic transitions from the broad expanse of Blue Mesa Reservoir to the granite-walled canyons of Morrow Point and Crystal, offering a deep look into the regional geography and historical infrastructure of the Gunnison basin.

Area

174.4 km²

Established

1965

Visitors

807.1K annual

Relief

Mountain

Uncompahgre National Forest: Protected Landscapes and Geographic Features in Colorado

Mapping the arid plateau and high-country San Juan wilderness zones.

Uncompahgre National Forest represents a vast protected area in the American West, spanning iconic landscapes from the dry, pinyon-juniper covered Uncompahgre Plateau to the dramatic, jagged ridges of the northern San Juan Mountains. This atlas entry provides essential context on its alpine wilderness designations, high-country topography, and the unique geological transitions that define its status as a critical Colorado resource for regional landscape analysis.

Area

3,865.68 km²

Established

1905

Relief

Mountain

Climate

Alpine

Mount Sneffels Wilderness: Mapping the High Alpine Terrain of the San Juan Mountains

Protected mountain geography in southwestern Colorado

Mount Sneffels Wilderness protects a dramatic cluster of peaks in the San Juan range, characterized by glacial cirques, expansive talus fields, and sharp ridgelines. As a vital component of the Colorado backcountry, this area provides a window into high-altitude ecological transition zones, from dense conifer forests to exposed granite summits that define the character of the Uncompahgre National Forest.

Area

67.04 km²

Established

1980

IUCN

Ib

Relief

Mountain

San Isabel National Forest: Geographic Overview and Protected Mountain Landscape Atlas

Central Colorado alpine terrain and designated wilderness areas

Spanning eleven counties in central Colorado, San Isabel National Forest serves as a cornerstone of the Southern Rocky Mountains. The forest landscape is dominated by the Sawatch and Sangre de Cristo ranges, offering a unique atlas of alpine tundra, dense coniferous forests, and high-altitude peaks that define the character of the region. This protected area provides a vital habitat and a vast, rugged environment characterized by volcanic formations like the Spanish Peaks and glacial geological features.

Area

4,533.42 km²

Established

1902

Relief

Mountain

Climate

Alpine

Lizard Head Wilderness: Mapping the San Juan Mountains Protected Alpine Terrain

High elevation geography and volcanic wilderness in Colorado

Lizard Head Wilderness is a federally protected area in southwestern Colorado characterized by steep ridgelines, dramatic volcanic geology, and alpine basins. It protects a rugged mountain landscape featuring the iconic Lizard Head spire and a cluster of high-elevation peaks including Mount Wilson, El Diente Peak, and Wilson Peak. The area offers a significant study in remote high-mountain geography and watershed protection within the San Juan range.

Area

167.17 km²

Established

1980

IUCN

Ib

Relief

Mountain