All Maps

Introduction Located in the Coast Ranges of northern California, the Bartlett Springs Fault Zone is the easternmost fault in the San Andreas Fault system in northern California. The fault is a right-lateral, strike-slip structure considered capable of producing an earthquake of moment magnitude 7. The purpose of this mapping is to better characterize the geology and earthquake hazards...

This thermal map shows lava flows covering the floor of Halemaʻumaʻu crater at the summit of Kīlauea. Fountaining was active in the southwest portion of the caldera, with flows extending east onto the downdropped block. Cooler colors (purple, black) show lower temperatures while hotter colors (orange, yellow) show higher temperatures.

This reference map depicts the new Kīlauea summit eruption within Halema‘uma‘u crater on December 23, 2024, constructed using data captured during a USGS Hawaiian Volcano Observatory helicopter overflight at 9:30 a.m.

The U.S. Geological Survey, in cooperation with the National Marine Sanctuary Program of the National Oceanic and Atmospheric Administration, has conducted seabed mapping and related research in the Stellwagen Bank National Marine Sanctuary (SBNMS) region since 1993. The area being mapped using geophysical and geological data includes the SBNMS and the surrounding region, which totals

The southern Stillwater Range in west-central Nevada contains the western part of the Oligocene Stillwater-Clan Alpine caldera complex, which extends about 55 kilometers (km) east from the west side of the Stillwater Range to the northwestern Desatoya Mountains. The complex consists of at least seven nested ignimbrite calderas and subjacent plutonic rocks emplaced into a complex basement...

This map portrays the distribution of landforms along the Umatilla River in northeastern Oregon and covers a corridor 127 kilometers long from the confluence of the Umatilla River with the Columbia River upstream to Meacham Creek. The map encompasses the valley bottom and extends about 1 kilometer up the adjoining hillslopes. Map data are intended to support water quality and fisheries...

This map shows recent deformation at Kīlauea over the timeframe of October 6–18, 2024.

This reference map depicts the final state of the Kīlauea middle East Rift Zone eruption that occurred between September 15 and 20, 2024.

This map shows recent deformation at Kīlauea over the timeframe of September 14–26, 2024, during which an eruption occurred on the East Rift Zone.

A helicopter overflight on September 20, 2024, allowed for aerial visual and thermal imagery to be collected at the middle East Rift Zone eruption site on Kīlauea.

This reference map depicts the eruption along Kīlauea's middle East Rift Zone as of September 19, 2024.

A helicopter overflight on September 19, 2024, allowed for aerial visual and thermal imagery to be collected at the middle East Rift Zone eruption site on Kīlauea.