Historical Earthquake Records and Seismic Activity Near Mendocino National Forest

Shasta, Trinity National Forest: Mapping the Protected Landscapes of Northern California

Volcanic peaks, expansive reservoirs, and rugged mountain wilderness

Spanning over two million acres, Shasta, Trinity National Forest represents a major protected landscape in Northern California. The geography includes the iconic Mount Shasta volcano and the complex shoreline of Shasta Lake, while hosting expansive wilderness areas and diverse terrain ranging from oak-forested foothills to alpine meadows.

Area

8,942.87 km²

Established

1954

Relief

Mountain

Climate

Temperate

Six Rivers National Forest: Exploring Protected River Valleys and Mountain Terrain in California

A regional protected area spanning California river systems

Six Rivers National Forest defines much of the rugged landscape in northwestern California. Named for the six major river drainages within its borders, the area features a unique combination of coastal forests, deep river canyons, and high-country ridges that offer significant insight into the region's broader geographic and ecological character.

Area

3,875.2 km²

Established

1947

Relief

Mountain

Climate

Mediterranean

Whiskeytown, Shasta, Trinity National Recreation Area: Geographic and Protected Landscape Overview

Mapped terrain across northern California reservoir units

Investigate the environmental character of Whiskeytown, Shasta, Trinity National Recreation Area, spanning from the expansive waters of Shasta Lake to the forested ridges of the Whiskeytown unit. This atlas entry details the interplay between large-scale reservoir management, riparian habitats, and the transition from Mediterranean chaparral to high-elevation conifer forests in California.

Area

99,588 km²

Established

1965

IUCN

V

Visitors

1.5M annual

Greater Farallones National Marine Sanctuary: Protected Marine Geography and Atlas Data

Essential marine protected area off the coast of California.

Greater Farallones National Marine Sanctuary protects a vital network of oceanic habitats off California, including sandy beaches, tidal flats, subtidal reefs, and open ocean waters. This marine protected area serves as a critical link in the Pacific coast's network of conservation landscapes, offering a deep look at the geographic connectivity between coastal estuaries and offshore continental shelf environments.

Area

8,530 km²

Established

1981

Relief

Lowland

Climate

Mediterranean

Ishi Wilderness Wildlife Reserve: Mapping the Volcanic Canyons of the Cascade Foothills

Geographic atlas of protected northern California wilderness and cultural landscapes.

Ishi Wilderness represents a crucial protected area in northern California, where volcanic geology meets a deep-rooted cultural history. Explore the mapped ridgelines, river canyons, and diverse oak woodland habitats that define this unique wildlife reserve and its role within the Cascade foothills.

Area

167.29 km²

Established

1984

IUCN

Ib

Relief

Mountain

Lassen National Forest: Mapped Geography and Protected Landscapes of Northern California

Volcanic terrain and expansive old growth ecosystems

Lassen National Forest represents a vast protected landscape in Northern California, defined by its severe volcanic geology and resilient conifer forests. This atlas entry provides essential geographic context regarding the forest boundaries, the volcanic rim of Mount Tehama, and the intricate river systems shaping the region. Explore the terrain, from accessible lava tubes to the wilderness areas preserved within this significant mountain corridor.

Area

4,331.53 km²

Established

1905

Relief

Mountain

Climate

Temperate

King Range Wilderness Nature Reserve: Exploring California Coastal Mountains and Terrain

Mapped protected landscapes along the Humboldt County North Coast

King Range Wilderness protects a unique vertical ecosystem spanning from the Pacific Ocean tide line to high inland elevations. This nature reserve, located in Humboldt County, serves as a significant geographic landmark for its steep topography, including Douglas-fir forests, estuarine habitats, and undisturbed coastal reaches that represent a substantial portion of California's undeveloped shoreline.

Area

172 km²

Established

2006

IUCN

Ib

Relief

Mountain

Plumas National Forest: Mapped Geography and Protected Landscape Features in California

Exploring the Sierra Nevada watershed and wilderness terrain

Plumas National Forest serves as a critical protected landscape in northern California, anchoring the headwaters of the Feather River system. This atlas entry details the forest's rugged canyons, high elevation mountain lakes, and significant old growth conifer stands that define its role within the northern Sierra Nevada ecosystem.

Area

4,640 km²

Established

1907

Relief

Mountain

Climate

Mediterranean