Recorded Earthquake History and Seismic Activity Near Juniper Dunes Wilderness, Washington

Umatilla National Forest: A Comprehensive Atlas of Blue Mountains Protected Landscapes

Explore mountain terrain, wilderness areas, and river-carved geography

Spanning over one million acres, Umatilla National Forest encompasses a complex array of river-cut canyons, high-country ridges, and substantial old-growth woodlands. This protected landscape offers a deep look into the ecological and physical character of the Blue Mountains, from the remote reaches of the Wenaha-Tucannon Wilderness to the headwaters of the Umatilla River.

Area

5,694 km²

Established

1908

Visitors

703K annual

Relief

Mountain

Wallowa-Whitman National Forest: A Geographic Overview of Northeastern Oregon Landscapes

Alpine wilderness, mountain ranges, and deep river gorges.

Wallowa-Whitman National Forest protects a vast, varied landscape of granite peaks, alpine meadows, and forested river canyons. This detailed overview covers the geographic significance of the Wallowa and Elkhorn mountains, the Hells Canyon corridor, and the surrounding wilderness regions within Oregon.

Area

9,682 km²

Established

1905

Visitors

505K annual

Relief

Mountain

Eagle Cap Wilderness: Map and Protected Area Overview in Northeastern Oregon

High elevation terrain, glacial valleys, and mountain ecosystems

Spanning over 350,000 acres, Eagle Cap Wilderness defines the high-altitude geography of the Wallowa Mountains. This protected area is characterized by sharp granite ridges, more than 60 named alpine lakes, and deeply carved U shaped glacial valleys. It acts as a primary water source for the region, hosting the headwaters of several major rivers while supporting diverse wildlife populations in a preserved backcountry environment.

Area

1,462.72 km²

Established

1940

IUCN

Ib

Relief

Mountain

Hells Canyon National Recreation Area: Geologic Boundaries and Snake River Corridor Atlas

Deep canyon terrain and archaeological heritage in the American Northwest

This protected landscape encompasses the profound depth of the Snake River gorge, featuring rugged basalt cliffs and diverse forested uplands. The area serves as a significant intersection of natural history and ancient cultural presence, providing a detailed look at the topographic complexity defining the Oregon and Idaho boundary region.

Area

2,641 km²

Established

1975

Relief

Mountain

Climate

Temperate

Okanogan, Wenatchee National Forest: A Comprehensive Look at Washington's Protected Mountain Landscapes

Mapping ecological gradients and wilderness boundaries across the eastern Cascade Range

Spanning from the moist coniferous forests of the western Cascades to the arid plateaus of the Okanogan, this massive national forest protects an unmatched diversity of terrain. Explore the intricate geography of river-carved valleys, glacial cirques, and remote wilderness areas that characterize this critical environmental corridor in the Pacific Northwest.

Area

6,066.33 km²

Established

1911

Visitors

397K annual

Relief

Mountain

Malheur National Forest: Exploring Oregon's Vast Protected Mountain and Desert Landscape

A geographic study of the Blue Mountains and high desert terrain

Spanning over 1.4 million acres, Malheur National Forest represents a complex protected landscape in eastern Oregon. Its geography is defined by a central spine of the Strawberry Mountains, creating a transition zone between arid high desert ecosystems and dense coniferous forests. Known for large wilderness areas and extensive old growth stands, this forest serves as a vital point for understanding the interplay between topographic elevation and regional climate in the Pacific Northwest.

Area

5,929.81 km²

Established

1908

Visitors

242K annual

Relief

Mountain

Gifford Pinchot National Forest: Geographic Overview of Washington's Volcanic Cascade Protected Lands

Mapping volcanic peaks, deep river canyons, and old-growth wilderness corridors

Gifford Pinchot National Forest represents a major protected expanse in the Washington Cascades, characterized by a complex volcanic topography that includes active craters, cinder cones, and rugged lava fields. This atlas entry details the forest's primary geographic features, from the high-elevation alpine terrain of the Goat Rocks to the river-carved valleys of the Lewis and Cowlitz systems, providing essential context on this integral Pacific Northwest protected landscape.

Area

5,347.95 km²

Established

1908

Visitors

1.8M annual

Relief

Mountain

Lake Roosevelt National Recreation Area: An Atlas of Washington Reservoir Landscapes

A sprawling protected region spanning the Columbia River corridor.

Lake Roosevelt National Recreation Area represents a massive, water-defined corridor in eastern Washington. The park preserves the 130-mile Franklin D. Roosevelt Lake, where steep basalt terrain meets arid shrub-steppe. This protected unit offers deep insight into the regional geography of the Columbia Plateau, featuring historical sites and river-system infrastructure that define the landscape's character.

Area

406.3 km²

Established

1946

Visitors

1.2M annual

Relief

Lowland