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Geologic framework and hydrostratigraphy of the Edwards and Trinity aquifers within northern Bexar and Comal Counties, Texas

During 2020–22, the U.S. Geological Survey, in cooperation with the Edwards Aquifer Authority, revised a previous publication that described the geologic framework and hydrostratigraphy of the Edwards and Trinity aquifers within northern Bexar and Comal Counties, Texas. This report presents the refined maps and descriptions of geologic framework and hydrostratigraphy of the Edwards and Trinity aqu
By
Oklahoma-Texas Water Science Center

November 5, 2023—Summary map of intrusive activity at Kīlauea Volcano

This map shows recent unrest at Kīlauea's summit and Southwest Rift Zone.

By
Natural Hazards Mission Area, Volcano Hazards Program, Hawaiian Volcano Observatory, Kīlauea

Stratigraphic Cross Sections of the Lewis Shale in the Eastern Part of the Southwestern Wyoming Province, Wyoming and Colorado

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 cross section
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Energy Resources Program, Central Energy Resources Science Center

October 24, 2023—Summary map of intrusive activity at Kīlauea Volcano

This map shows recent unrest at Kīlauea summit.

By
Natural Hazards Mission Area, Volcano Hazards Program, Hawaiian Volcano Observatory, Kīlauea

October 24, 2023 — Reference map of September 2023 Kīlauea summit eruption

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

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Natural Hazards Mission Area, Volcano Hazards Program, Hawaiian Volcano Observatory, Kīlauea

October 12, 2023—Summary map of intrusive activity at Kīlauea Volcano

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

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Natural Hazards Mission Area, Volcano Hazards Program, Volcano Science Center, Hawaiian Volcano Observatory, Kīlauea

Groundwater potentiometric-surface altitude in 2022 and groundwater-level changes between 1968, 1991, and 2022, in the alluvial aquifer in the Big Lost River Valley, south-central Idaho

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 altitude,
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Water Resources Mission Area, Idaho Water Science Center

September 15, 2023 — Kīlauea summit thermal map compilation

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

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Volcano Hazards Program, Hawaiian Volcano Observatory, Kīlauea

September 15, 2023 — Kīlauea summit thermal maps

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

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Volcano Hazards Program, Hawaiian Volcano Observatory, Kīlauea

September 14, 2023 — Kīlauea summit thermal maps

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

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Volcano Hazards Program, Hawaiian Volcano Observatory, Kīlauea

September 14, 2023 — Kīlauea summit eruption reference map

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.

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Volcano Hazards Program, Hawaiian Volcano Observatory, Kīlauea

September 12, 2023 — Kīlauea summit thermal maps

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

By
Volcano Hazards Program, Hawaiian Volcano Observatory, Kīlauea