All Maps

Three stratigraphic cross sections A–A', B–B', and C–C' were created for the Lewis Shale and associated strata in the eastern part of the Southwestern Wyoming Province of Wyoming and Colorado. The cross sections highlight 15 clinothems within the Lewis Shale, Fox Hills Sandstone, and Lance Formation progradational system (also referred to as the Lewis Shale system). Additionally, the...

This map shows recent unrest at Kīlauea summit.

This reference map depicts the Kīlauea summit region following the most recent eruption in September 2023.

This map shows recent unrest in Kīlauea’s summit region. Colored fringes denote areas of ground deformation and yellow circles denote earthquake locations.

The U.S. Geological Survey and the Idaho Department of Water Resources measured groundwater levels during spring 2022 and autumn 2022 to create detailed potentiometric-surface maps for the alluvial aquifer in the Big Lost River Valley in south-central Idaho. Wells were assigned to shallow, intermediate, and deep water-bearing units based on well depth, groundwater potentiometric-surface...

This compilation shows thermal maps of the summit eruption for Sept. 11-15, 2023.

A helicopter overflight on September 15, 2023, allowed for aerial visual and thermal imagery to be collected at the summit of Kīlauea.

A helicopter overflight on September 14, 2023, allowed for aerial visual and thermal imagery to be collected at the summit of Kīlauea.

The Kīlauea summit eruption that began on Sunday, September 10, 2023 continues; this map depicts lava flow activity as of September 14, the fourth full day of the eruption.

A helicopter overflight on September 12, 2023, allowed for aerial visual and thermal imagery to be collected at the summit of Kīlauea.

A helicopter overflight on September 11, 2023, allowed for aerial visual and thermal imagery to be collected at the summit of Kīlauea.

A new eruption at the summit of Kīlauea volcano began at approximately 3:13 p.m. on Sunday, September 10, 2023.