Recorded Earthquake History and Seismic Catalogue for Middle Santiam Wilderness in Oregon

Willamette National Forest: Geography and Protected Landscapes of the Central Oregon Cascades

Mapped terrain, old-growth forests, and protected wilderness boundaries.

Explore the expansive territory of Willamette National Forest, a primary protected area extending over 100 miles along Oregon's Cascade Range. This region features volcanic peaks exceeding 10,000 feet, extensive old-growth Douglas-fir stands, and a dense network of Wild and Scenic rivers, providing a detailed look at the geographic character and ecological heritage of the Pacific Northwest.

Area

6,790.75 km²

Established

1933

Visitors

1.7M annual

Relief

Mountain

Menagerie Wilderness Wildlife Reserve: Oregon Cascade Range Geography and Rock Pinnacles

Protected Cascade mountain terrain and unique crag clusters

Situated in the central Cascade Range of Oregon, Menagerie Wilderness provides a compact, highly defined landscape of rising rock pinnacles and lush coniferous forest. This resource traces the unique topography and protected boundaries of this specialized wilderness area, offering insight into the geological features and forest ecosystems that distinguish it from surrounding mountainous terrain.

Area

20.37 km²

Established

1984

IUCN

Ib

Relief

Mountain

Mount Washington Wilderness: Volcanic Geology and Forested Cascade Terrain

A mapped overview of Oregon protected volcanic landscapes.

Mount Washington Wilderness offers a stark and compelling geological study of Oregon's central Cascades. From the shield volcano's basaltic remnants to the fragmented cinder cones of Belknap Crater, the area provides a window into explosive and effusive volcanic activity. Our geographic data maps the transition of conifer forests and subalpine zones across its rocky, lake-dotted interior, highlighting the unique character of this quiet protected preserve.

Area

219.66 km²

Established

1964

IUCN

Ib

Relief

Mountain

Mount Hood National Forest: Atlas of Protected Landscapes and Volcanic Geography

Exploring the Cascade Range terrain and wilderness boundaries in Oregon.

Mount Hood National Forest encompasses a vast, rugged expanse of the Oregon Cascades, anchored by the iconic, glacier-clad Mount Hood. This protected landscape contains extensive old-growth forests, high-alpine lakes, and deep river canyons. Discover the geographic extent of these wilderness areas and mountain terrain within the MoriAtlas database of protected lands.

Area

4,318.17 km²

Established

1908

Visitors

4.4M annual

Relief

Mountain

Roaring River Wilderness: Geography and Protected Area Atlas of Oregon

Ancient forest corridors and alpine lake landscapes

Roaring River Wilderness is a federally protected landscape in Oregon, defined by steep, tree-covered ridges and the vigorous Roaring River. This wilderness preserves a dense mosaic of old-growth conifers, high-elevation alpine lakes like Serene and Shellrock, and important salmon-spawning waters within the broader Mount Hood National Forest geography.

Area

148 km²

Established

2009

IUCN

Ib

Relief

Mountain

Siuslaw National Forest: Oregon Coast Range and Protected Landscape Geography

Coastal dunes, temperate rainforests, and river networks

Explore the mapped boundaries and natural geography of Siuslaw National Forest. This protected landscape highlights the ecological transition from Pacific shorelines to the high-elevation forests of the Oregon Coast Range, encompassing sand dune systems, salmon-supporting streams, and significant wilderness refuges.

Area

2,566.54 km²

Established

1908

Visitors

1M annual

Climate

Temperate

Mount Hood National Recreation Area: Oregon Protected Landscape and Regional Geography

A three-unit recreational forest landscape in the Cascade Range.

Spanning over 34,000 acres, this protected landscape frames the lower volcanic slopes and forested drainages around Mount Hood. The area integrates river corridors, wilderness boundaries, and subalpine terrain, offering a clear view of the complex topography that defines the Cascade Range in northern Oregon.

Area

139.8 km²

Established

2009

Relief

Mountain

Climate

Temperate

Mount Hood Wilderness: Atlas of Volcanic Peaks and Glacial Geography in Oregon

High-altitude protected landscapes and forest ecosystems

This protected area captures the dramatic character of the Cascade Range through its signature volcanic terrain, ancient forests, and high-alpine ridges. Covering a vast vertical range, the wilderness offers a study in geologic forces, featuring active glaciers, deep basaltic canyons, and meadows that define the mountain's northern and western slopes.

Area

262 km²

Established

1964

IUCN

Ib

Visitors

10K annual