Park earthquake history

Review documented seismic events by date, magnitude, depth, and distance from park boundaries

Ishi Wilderness Historical Earthquake Catalogue and Recorded Regional Seismic Activity

This collection presents a historical catalogue of seismic activity recorded in the vicinity of Ishi Wilderness, tracing data points compiled from USGS earthquake records. Each entry provides localized context for events occurring near these northern California foothills, allowing for a clearer understanding of the documented seismic frequency in the region. The records include essential event details such as timing, magnitude, and precise proximity to the wilderness area.

Related tags

wilderness areaCascade foothillsTehama CountyLassen National Forestchaparral

Explore Ishi Wilderness

A foothill wilderness in northern California preserving the homeland of the last known Yahi Yana people.

Ishi Wilderness

Ishi Wilderness is a federally designated wilderness area in the foothills of northern California, straddling Tehama County within the Sierra/Cascade region. Administered primarily by the U.S. Forest Service as part of the Lassen National Forest, with a small portion managed by the Bureau of Land Management, the wilderness was created by Congress through the California Wilderness Act of 1984. The landscape is defined by east-west running ridges framing rugged river canyons carved by Deer Creek and Mill Creek, with elevations reaching roughly 4,000 feet. The terrain is etched by wind and water, and features basalt outcroppings, caves, and unusual pillar lava formations. The area protects a significant portion of the southernmost Cascade Range foothills, an ecological zone not preserved in this form elsewhere in California. The wilderness takes its name from Ishi, the last known member of the Yahi Yana people, who inhabited this rugged country for thousands of years. Today it is recognized as much for its cultural significance and paleontological and archaeological sensitivity as for its natural character, supporting deer herds, raptors, and a mix of chaparral, oak woodland, and pine forest habitats.

Location: United States of America
Park type: Wildlife reserve
Established: 1984
Area: 167.3 km²
Highest point: 1,200 m

Ishi Wilderness Protected Area Atlas

Search Ishi Wilderness observations by magnitude, depth, and distance

Investigate the historical earthquake record around Ishi Wilderness

Earthquake reports associated with Ishi Wilderness are organised by their epicentre locations and measured distance from the Cascade foothill and chaparral landscape. The collection exposes timing, magnitude, depth, locality, separation, and source evidence for historical comparison without claiming that each event occurred inside the wilderness or affected its forest and canyon habitats.

Magnitude

Location

This page describes catalogued earthquakes associated with the park by epicentre location and distance. It does not establish causation, assess current danger, or predict future earthquakes.

No earthquake records match the current filters

Park atlas

Continue beyond Ishi Wilderness historical earthquake data

Explore additional protected parks after the Ishi Wilderness records

From the Ishi Wilderness earthquake catalogue, this section opens other park pages without extending claims from its northern California Cascade foothills, volcanic terrain, chaparral, woodland, canyons, rivers, and caves. A link does not mean shared wilderness protection, similar geology, geographic closeness, comparable event evidence, matching source depth, seismic relevance, hazard, or risk.

A wide watercolor illustration showing a calm body of water surrounded by green hills, conifer trees, and reeds in the foreground.

Protected landscapeCalifornia

Park boundaries overlap#1 closest

Northeast

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

Lassen National Forest Atlas

Protected landscapeCalifornia

20 km away#2 closest

East

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

Plumas National Forest Geography and Atlas Map

National parkCalifornia

29 km away#3 closest

Northeast

Lassen Volcanic National Park: Protected Landscape Identity and Geographic Context

Discover the mapped boundaries and natural terrain of this California national park.

Gain a structured understanding of Lassen Volcanic National Park as a protected landscape. This detail page provides essential geographic context, focusing on the park's mapped boundaries and its specific terrain characteristics within California. It is designed for users seeking detailed information about the park's protected status and its placement within the broader atlas of natural areas, emphasizing its unique geographic identity and conservation significance.

Area: 430.8 km²
Established: 1916
IUCN: II
Visitors: 504.8K annual

Lassen Volcanic National Park protected area

A soft watercolor painting depicting a serene landscape with gentle green hills, a small forest, and a calm lake at sunrise or sunset.

Protected landscapeCalifornia

63 km away#4 closest

Northwest

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

Shasta, Trinity National Forest Atlas

A watercolor illustration showing a soft, panoramic view of green trees and rolling hills against pale, pinkish-yellow mountains in the background.

Protected landscapeCalifornia

68 km away#5 closest

Southwest

Mendocino National Forest: Mapping California's Remote Protected Mountain Landscape

Examining wilderness boundaries and rugged coastal terrain

Mendocino National Forest serves as a significant protected area in California, known for being the only national forest in the state without major paved access. Its terrain spans 913,000 acres of mountain peaks, deep river canyons, and old-growth conifer forests. Home to the unique tule elk population at Lake Pillsbury, this landscape provides a rare example of wilderness isolation, complex geothermal features, and rugged, largely untouched northern coastal topography.

Area: 3,696.02 km²
Established: 1907
Relief: Mountain
Climate: Mediterranean

Mendocino National Forest Geography

Protected landscapeCalifornia

69 km away#6 closest

Northwest

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

Explore Whiskeytown, Shasta, Trinity National Recreation Area Geography

Protected landscapeCalifornia

77 km away#7 closest

Southeast

Tahoe National Forest: Exploring Protected Mountain Landscapes in the California Sierra Nevada

An atlas of granite river canyons and alpine ridge terrain

Tahoe National Forest defines a critical segment of the western Sierra Nevada, containing granite river canyons, numerous reservoirs, and summits reaching above 9,000 feet. This protected landscape acts as a vital headwater for California foothill communities and Nevada, hosting significant natural features like the Placer County Big Trees Grove and segments of the Pacific Crest Trail.

Area: 3,526.82 km²
Established: 1899
Relief: Mountain
Climate: Mediterranean

Explore Tahoe National Forest Geography

Protected landscapeCalifornia

95 km away#8 closest

Northeast

Modoc National Forest: Protected Landscape and Warner Mountains Geography

High desert volcanic terrain in northeastern California

Modoc National Forest encompasses a massive expanse of volcanic plateaus and rugged mountain ridges in the northeastern corner of California. This protected area offers significant geographic variety, transitioning from arid sagebrush basins to lush, high-elevation conifer forests. It serves as a vital natural landscape, home to the South Warner Wilderness and large stands of old-growth timber, reflecting the unique geologic history of the regional lava flows.

Area: 6,695.09 km²
Established: 1904
Relief: Mountain
Access: Moderate access

Explore Modoc National Forest Geography

MoriAtlas Explorer

Continue Exploring the Protected Landscapes of Ishi Wilderness

Gain a deeper understanding of the Ishi Wilderness geographic structure and its protected status through the MoriAtlas platform. Analyze the volcanic terrain, river drainage patterns, and ecological boundaries that characterize this unique wildlife reserve in northern California.

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Ishi Wilderness Protected Area Atlas

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